Radiology

 
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    MedPage Today Radiology

  • Fractured Evidence: Spine Repair Debate Heats Up

    4 Feb 2010 | 9:52 am
    Radiologists use vertebroplasty to treat the most painful vertebral compression fractures. But two randomized controlled trials found the procedure was no better than a sham in terms of disability and pain relief. The resulting furor raises questions about evidence-based medicine.

  • Preop CT May Reduce Unnecessary Appendectomy (CME/CE)

    28 Jan 2010 | 6:04 am
    The use of computed tomography to diagnose appendicitis may reduce the likelihood of removing healthy organs in women under 45, but not among other groups, a retrospective study showed.

  • 'Virtual' Colon Scans Effective in Seniors (CME/CE)

    27 Jan 2010 | 6:00 am
    Patients 65 and older are as suitable as younger individuals for CT colonography, said researchers conducting a large retrospective study.

  • Program Cuts Excess Radiation Exposure (CME/CE)

    22 Jan 2010 | 9:02 am
    A New York medical center substantially reduced diagnostic radiation doses with an education program and clinical algorithm to promote ventilation-perfusion scanning in lieu of CT pulmonary angiography for detecting pulmonary embolism, researchers said.

  • Ultrasound Aids Early Ovarian Cancer Detection (CME/CE)

    22 Jan 2010 | 4:59 am
    Serum biomarkers identified through proteomic analysis, coupled with contrast-enhanced ultrasound, ultimately may provide a means for early diagnosis of ovarian cancer, researchers say.
 
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    radROUNDS

  • 2010 CMS PQRI Continues 2% Bonus

    radRounds Radiology Network
    (AMERICAN COLLEGE OF RADIOLOGY) -- The Centers for Medicare and Medicaid Service (CMS) 2010 Physician Quality Reporting Initiative (PQRI) is underway. Legislation continued the 2% bonus on total allowable Medicare charges for individual participants who successfully report quality measures in 2010. Success depends on an early start for the reporting period, so plan to begin reporting soon. In 2010, individuals can report the full calendar year or may choose to report for 6 months from July through December. Click here for details on the program and how radiologists can participate. Or contact…

  • Good or bad news for radiology? CMS Cancels Change Request 6375: Place of Service/Date of Service Instructions for Professional/Technical Component of Diagnostic Tests

    radRounds Radiology Network
    (ACR) -- Last year Medicare released a transmittal that required physicians to report the specific date of service (DOS) and place of service (POS) of where the professional and technical component is provided. The ACR and RBMA were part of a multi-specialty effort to ask CMS to rescind these requirements and ask for clarification on how to report DOS and POS under the unique radiology practice arrangements. We are happy to announce that CMS realizes there are difficulties with complying with these new regulations and has rescinded them until further clarification can be provided. The ACR…

  • $2.9 Million Dollar Settlement in Colombini MRI suit related to oxygen tank incident in NYC

    radRounds Radiology Network
    (NEW YORK) -- New York Civil court has recently ruled in favor of the plaintiff regarding an MRI incident of oxygen tank killing a 6 year old boy. This was an incident that happened in a hospital in Westchester County. The legal settlement totaled up to $2.9 million dollars to be turned over to the Colombini family. The initial lawsuit totaled $20 million dollars and also implicated GE Healthcare. GE healthcare was later dropped as a defendant on the case. To read more about the initial incident, please visit an article published by WebMD:…

  • Anything iPod can do, can iPad do better?

    radRounds Radiology Network
    (DIAGNOSTIC IMAGING) -- There seems no end to the bashing. But from radiology’s perspective, Apple’s soon-to-be-released iPad could be huge, potentially serving as the first truly mobile device to support medical visualization. The concept was there with the iPod Touch: a lightweight, easy-to-use device that added video to the iPod’s audio. The iPad brings this to the big screen with computing power that could be extended to support not only windowing and leveling, but some advanced processing as well. Some will say that the iPad is just another form of the often-tried, often-failed…

  • MQSA Requirements for Radiologists (FAQ)

    radRounds Radiology Network
    What are the requirements for MQSA for radiologists? Here is a basic summary from the ABR, American Board of Radiology: The RRC for Diagnostic Radiology requires three months of breast imaging. The latest RRC regulations state "There must be a minimum of 12 weeks of clinical rotations in breast imaging. Each resident should have documentation of the interpretation/multireading of at least 240 mammograms within a six-month period within the last two years of the residency program." The RRC regulations are posted on the ACGME website as "Effective September, 2001," with several editorial…
 
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    BMC Medical Imaging - Latest Articles

  • Building generic anatomical models using virtual model cutting and iterative registration

    Mei Xiao
    7 Feb 2010 | 4:00 pm
    Background: Using 3D generic models to statistically analyze trends in biological structure changes is an important tool in morphometrics research. Therefore, 3D generic models built for a range of populations are in high demand. However, due to the complexity of biological structures and the limited views of them that medical images can offer, it is still an exceptionally difficult task to quickly and accurately create 3D generic models (a model is a 3D graphical representation of a biological structure) based on medical image stacks (a stack is an ordered collection of 2D images). We show…

  • Agreement of left ventricular mass in steady state free precession and delayed enhancement MR images: implications for quantification of fibrosis in congenital and ischemic heart disease

    Sigurdur Stephensen
    23 Jan 2010 | 4:00 pm
    Background: Left ventricular mass (LVM) is used when expressing infarct or fibrosis as a percentage of the left ventricle (LV). Quantification of LVM is interchangeably carried out in cine steady state free precession (SSFP) and delayed enhancement (DE) magnetic resonance imaging (MRI). However, these techniques may yield different LVM. Therefore, the aim of the study was to compare LVM determined by SSFP and DE MRI in patients and determine the agreement with these sequences with ex vivo data in an experimental animal model. Methods: Ethics committees approved human and animal studies.

  • Radiographic assessment of the femorotibial joint of the CCLT rabbit experimental model of osteoarthritis

    Caroline Boulocher
    19 Jan 2010 | 4:00 pm
    Background: The purposes of the study were to determine the relevance and validity of in vivo non-invasive radiographic assessment of the CCLT (Cranial Cruciate Ligament Transection) rabbit model of osteoarthritis (OA) and to estimate the pertinence, reliability and reproducibility of a radiographic OA (ROA) grading scale and associated radiographic atlas. Methods: In vivo non-invasive extended non weight-bearing radiography of the rabbit femorotibial joint was standardized. Two hundred and fifty radiographs from control and CCLT rabbits up to five months after surgery were reviewed by three…

  • Balloon-occluded retrograde transvenous obliteration for gastric varices: the relationship between the clinical outcome and gastrorenal shunt occlusion

    Kenichi Katoh
    13 Jan 2010 | 4:00 pm
    Background: The rupture of gastric varices is associated with high mortality rate. Balloon-occluded retrograde transvenous obliteration (B-RTO), a minimally invasive procedure that was introduced in the mid-1990s, has been widely accepted in Japan. Several reports have indicated that B-RTO yields satisfactory results; however, few reports have discussed the recurrence of gastric varices after this therapy. The purpose of this study is to retrospectively evaluate the technical aspects of B-RTO and the recurrence of gastric varices after treatment with this procedure. Methods: B-RTO was…

  • Design and validation of Segment - freely available software for cardiovascular image analysis

    Einar Heiberg
    10 Jan 2010 | 4:00 pm
    Background: Commercially available software for cardiovascular image analysis often has limited functionality and frequently lacks the careful validation that is required for clinical studies. We have already implemented a cardiovascular image analysis software package and released it as freeware for the research community. However, it was distributed as a stand-alone application and other researchers could not extend it by writing their own custom image analysis algorithms. We believe that the work required to make a clinically applicable prototype can be reduced by making the software…
 
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    Cardiovascular Ultrasound - Latest Articles

  • Early right ventricular systolic dysfunction in patients with systemic sclerosis without pulmonary hypertension: a Doppler Tissue and Speckle Tracking echocardiography study

    Sebastian Schattke
    21 Jan 2010 | 4:00 pm
    Background: Isovolumetric acceleration (IVA) is a novel tissue Doppler parameter for the assessment of systolic function. The aim of this study was to evaluate IVA as an early parameter for the detection of right ventricular (RV) systolic dysfunction in patients with systemic sclerosis (SSc) without pulmonary hypertension. Methods: 22 patients and 22 gender- and age-matched healthy subjects underwent standard echocardiography with tissue Doppler imaging (TDI) and speckle tracking strain to assess RV function. Results: Tricuspid annular plane systolic excursion (TAPSE) (23.2 +/- 4.1 mm vs.

  • Longitudinal peak strain detects a smaller risk area than visual assessment of wall motion in acute myocardial infarction

    Lene Rosendahl
    10 Jan 2010 | 4:00 pm
    Background: Opening of an occluded infarct related artery reduces infarct size and improves survival in acute ST-elevation myocardial infarction (STEMI). In this study we performed tissue Doppler analysis (peak strain, displacement, mitral annular movement (MAM)) and compared with visual assessment for the study of the correlation of measurements of global, regional and segmental function with final infarct size and transmurality. In addition, myocardial risk area was determined and a prediction sought for the development of infarct transmurality [greater than or equal to]50%. Methods: Twenty…

  • Preoperative scallop-by-scallop assessment of mitral prolapse using 2D-transthoracic echocardiography.

    Giovanni Minardi
    31 Dec 2009 | 4:00 pm
    Background: This study was conducted to assess the accuracy of harmonic imaging 2D-transthoracic echocardiography (2D-TTE) segmental analysis compared to surgical findings, in degenerative mitral regurgitation (MR). Methods: Seventy-seven consecutive patients with severe degenerative MR were prospectively enrolled. Preoperative 2D-TTE with precise localization of prolapsing or flailing scallops/segments was performed. All patients underwent mitral valve surgical repair. Surgical reports (SR), including valve description, were used as references for comparisons. A postoperative control 2D-TTE…

  • Relationship between carotid intima-media thickness and coronary angiographic findings: a prospective study

    Ugur Coskun
    30 Dec 2009 | 4:00 pm
    Background: Since cardiovascular diseases are associated with high mortality and generally undiagnosed before the onset of clinical findings, there is a need for a reliable tool for early diagnosis. Carotid intima-media thickness (CIMT) is a non-invasive marker of coronary artery disease (CAD) and is widely used in practice as an inexpensive, reliable, and reproducible method. In the current study, we aimed to investigate prospectively the relationship of CIMT with the presence and extent of significant coronary artery narrowing in patients evaluated by coronary angiography for stable angina…

  • Transthoracic echocardiography for imaging of the different coronary artery segments: a feasibility study

    Johnny Vegsundvag
    21 Dec 2009 | 4:00 pm
    Background: Transthoracic echocardiography (TTE) may be used for direct inspection of various parts of the main coronary arteries for detection of coronary stenoses and occlusions. We aimed to assess the feasibility of TTE to visualise the complete segments of the left main (LM), left descending (LAD), circumflex (Cx) and right (RCA) coronary arteries. Methods: One hundred and eleven patients scheduled for diagnostic coronary angiography because of chest pain or acute coronary syndrome had a TTE study to map the passage of the main coronary arteries. LAD, Cx and RCA were each divided into…
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    Journal of Vascular and Interventional Radiology

  • CME Test Questions

    31 Jan 2010 | 4:00 pm

  • Statin Prescription is Essential in Peripheral Vascular Disease

    Joe J. Leyon, Saraswathy Jaiveer, Derek L. Connolly, Suresh Babu
    31 Jan 2010 | 4:00 pm
    Hypercholesterolemia is an important and easily modifiable risk factor for peripheral arterial disease (PAD), but is frequently not adequately addressed by vascular interventionists. Patients with PAD often have extensive atherosclerotic disease elsewhere and have a 1-year mortality rate as high as 20%, mainly from cardiovascular events. This case discussion briefly addresses the evidence for treating hypercholesterolemia in this subgroup of patients. Statins not only lower cholesterol, but also are antiinflammatory, antiproliferative, and antithrombogenic, and improve endothelial function.

  • Stent-graft Narrowed with a Lasso Catheter: An Adjustable TIPS Reduction Technique

    Valérie Monnin-Bares, Frédéric Thony, Christian Sengel, Ivan Bricault, Vincent Leroy, Gilbert Ferretti
    31 Jan 2010 | 4:00 pm
    The authors describe an endovascular technique to reduce shunt diameter in the management of transjugular intrahepatic portosystemic shunt (TIPS)–induced refractory hepatic encephalopathy. Five patients were treated with a constrained stent-graft by using a commercially available balloon-expandable stent-graft narrowed by using a lasso catheter. This offers the possibility of an adjustable reduction of the shunt diameter. All procedures were technically successful, resulting in a significant increase in the portosystemic gradient and reopacification of the intrahepatic portal vein branches,…

  • Direct Radiofrequency Ablation of Portal Vein Tumor Thrombus in Continuity with Hepatocellular Carcinoma

    Loukas Thanos, Evangelia Sotiropoulou, Savvas Tanteles, Maria Pomoni, Dimitrios Kelekis
    31 Jan 2010 | 4:00 pm
    The authors describe the case of a patient with hepatocellular carcinoma and portal vein (PV) tumor thrombus. Radiofrequency (RF) ablation was applied successfully not only to the main tumor but also directly to the invaded PV. On the last imaging follow-up performed at 16 months after RF ablation the PV remained recanalized. Twenty months after the RF ablation, the patient was still alive with good clinical status.

  • Table of Contents

    31 Jan 2010 | 4:00 pm
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    Journal of Vascular and Interventional Radiology - Articles in Press

  • Transhepatic Assisted Transoral Placement of a Duodenal Stent in Malignant Gastric Outlet Obstruction - Corrected Proof

    Alexander Milson, Adel Abdellaoui, Clementine Fraser, Anthony F. Watkinson
    8 Feb 2010 | 4:00 pm
    Gastric outlet obstruction is a well- recognized complication of locally advanced carcinoma of the head of the pancreas. The authors report a transoral placement of a duodenal stent over a percutaneous guide wire, inserted retrogradely through a transhepatic approach via the ampulla of Vater, in a patient in whom traditional stent placement was technically not possible. This technique allows safe duodenal stent placement for different malignant gastric outlet obstruction such as pancreatic, gastric, duodenal, and metastases to the peripancreatic region.

  • Prospective Evaluation of the Embolic Agent Bead Block in the Treatment of Uterine Leiomyomas with Uterine Artery Embolization: A Phase II Study - Corrected Proof

    Howard B. Chrisman, Sabeen Dhand, Shankar Rajeswaran, Paul Nikolaidis, Robert L. Vogelzang, Benito Corpuz, Peggy Gilbertson, Reed A. Omary
    8 Feb 2010 | 4:00 pm
    PURPOSE: To assess symptom reduction and follow-up magnetic resonance (MR) imaging findings in patients who have undergone uterine artery embolization (UAE) for symptomatic leiomyomas with the use of Bead Block.MATERIALS AND METHODS: Symptomatic patients with uterine leiomyomas were treated with UAE with Bead Block. Degree of tumor infarction was assessed 3 months after treatment with contrast material–enhanced MR imaging. Each case was categorized as showing less than 25% infarction, 25%–89% infarction, or at least 90% infarction. Imaging-based failure was defined as tumor infarction of…

  • Leiomyoma Volume Changes at Follow-up after Uterine Artery Embolization: Correlation with the Initial Leiomyoma Volume and Location - Corrected Proof

    Nagy N.N. Naguib, Emmanuel Mbalisike, Nour-Eldin A. Nour-Eldin, Alexandra Jost, Thomas Lehnert, Hans Ackermann, Thomas J. Vogl
    8 Feb 2010 | 4:00 pm
    PURPOSE: To study the changes in uterine leiomyoma volume after uterine artery embolization (UAE) and to correlate these changes with the initial tumor volume and location within the uterus.MATERIALS AND METHODS: The study was performed retrospectively on 28 consecutive patients (age, 37–57 years; mean, 48 y ± 4.81) with 84 uterine leiomyomas. UAE was performed between June 2006 and August 2007. All tumors in all patients were evaluated. Magnetic resonance imaging was performed before UAE and 3 months and 1 year after UAE. The volume and location of each tumor were evaluated in consensus…

  • Hydronephrosis after Embolization of Internal Iliac Artery Aneurysms - Corrected Proof

    Matthew J. Metcalfe, Mina S. Hanna, Simon Gill, Nick J. Burfitt, Adam W. Mitchell, Ian J. Franklin
    7 Feb 2010 | 4:00 pm
    The treatment of internal iliac artery aneurysms is aimed at the prevention of rupture. Traditionally, this is undertaken surgically; however, endovascular techniques are an acceptable alternative and these techniques are also not without complication. Herein, the authors describe the endovascular treatment of two patients with internal iliac aneurysms. Although the treatments were initially successful, both patients presented with ureteric obstruction and hydronephrosis 2 months later.

  • Treatment of Symptomatic Focal Nodular Hyperplasia with Percutaneous Radiofrequency Ablation - Corrected Proof

    Pejman Hedayati, Eric vanSonnenberg, Raymond Shamos, Thomas Gillespie, William McMullen
    4 Feb 2010 | 4:00 pm
    The authors report a case of a 21-year-old woman taking oral contraceptives for severe dysmenorrhea who presented with a hepatic mass and worsening right upper quadrant pain. The oral contraceptives could not be discontinued because of her pelvic symptoms, necessitating treatment of the liver lesion for symptomatic relief. Computed tomography and percutaneous biopsy demonstrated the mass to be focal nodular hyperplasia. The patient opted for radiofrequency ablation rather than surgical enucleation for symptomatic relief. The ablation proved to be a safe and effective alternative to surgery to…
 
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    Human Brain Mapping

  • Left cytoarchitectonic BA 44 processes syntactic gender violations in determiner phrases

    Stefan Heim, Muna van Ermingen, Walter Huber, Katrin Amunts
    8 Feb 2010 | 6:23 am
    Recent neuroimaging studies make contradictory predictions about the involvement of left Brodmann's area (BA) 44 in processing local syntactic violations in determiner phrases (DPs). Some studies suggest a role for BA 44 in detecting local syntactic violations, whereas others attribute this function to the left premotor cortex. Therefore, the present event-related functional magnetic resonance imaging (fMRI) study investigated whether left-cytoarchitectonic BA 44 was activated when German DPs involving syntactic gender violations were compared with correct DPs (correct: 'der Baum' -…

  • Cortical gamma-oscillations modulated by auditory-motor tasks-intracranial recording in patients with epilepsy

    Tetsuro Nagasawa, Robert Rothermel, Csaba Juhász, Miho Fukuda, Masaaki Nishida, Tomoyuki Akiyama, Sandeep Sood, Eishi Asano
    8 Feb 2010 | 6:23 am
    Human activities often involve hand-motor responses following external auditory-verbal commands. It has been believed that hand movements are predominantly driven by the contralateral primary sensorimotor cortex, whereas auditory-verbal information is processed in both superior temporal gyri. It remains unknown whether cortical activation in the superior temporal gyrus during an auditory-motor task is affected by laterality of hand-motor responses. Here, event-related [gamma]-oscillations were intracranially recorded as quantitative measures of cortical activation; we determined how cortical…

  • Distortion correction for diffusion-weighted MRI tractography and fMRI in the temporal lobes

    Karl V. Embleton, Hamied A. Haroon, David M. Morris, Matthew A. Lambon Ralph, Geoff J.M. Parker
    8 Feb 2010 | 6:23 am
    Single shot echo-planar imaging (EPI) sequences are currently the most commonly used sequences for diffusion-weighted imaging (DWI) and functional magnetic resonance imaging (fMRI) as they allow relatively high signal to noise with rapid acquisition time. A major drawback of EPI is the substantial geometric distortion and signal loss that can occur due to magnetic field inhomogeneities close to air-tissue boundaries. If DWI-based tractography and fMRI are to be applied to these regions, then the distortions must be accurately corrected to achieve meaningful results. We describe robust…

  • 3D comparison of low, intermediate, and advanced hippocampal atrophy in MCI

    Liana G. Apostolova, Paul M. Thompson, Amity E. Green, Kristy S. Hwang, Charleen Zoumalan, Clifford R. Jack Jr, Danielle J. Harvey, Ronald C. Petersen, Leon J. Thal, Paul S. Aisen, Arthur W. Toga, Jeffrey L. Cummings, Charles S. DeCarli
    8 Feb 2010 | 6:23 am
    We applied the hippocampal radial atrophy mapping technique to the baseline and follow-up magnetic resonance image data of 169 amnestic mild cognitive impairment (MCI) participants in the imaging arm of the Alzheimer's Disease Cooperative Study MCI Donepezil/Vitamin E trial. Sixty percent of the subjects with none to mild hippocampal atrophy rated with the visual medial temporal atrophy rating scale (MTA score < 2) and 33.8% of the subjects with moderate to severe (MTA [ge] 2) hippocampal atrophy converted to Alzheimer's disease (AD) during 3-year follow-up. MTA [ge] 2 showed a trend for…

  • Cortical responses to consciousness of schematic emotional facial expressions: A high-resolution EEG study

    Claudio Babiloni, Fabrizio Vecchio, Paola Buffo, Maura Buttiglione, Giuseppe Cibelli, Paolo Maria Rossini
    8 Feb 2010 | 6:23 am
    Is conscious perception of emotional face expression related to enhanced cortical responses? Electroencephalographic data (112 channels) were recorded in 15 normal adults during the presentation of cue stimuli with neutral, happy or sad schematic faces (duration: "threshold time" inducing about 50% of correct recognitions), masking stimuli (2 s), and go stimuli with happy or sad schematic faces (0.5 s). The subjects clicked left (right) mouse button in response to go stimuli with happy (sad) faces. After the response, they said "seen" or "not seen" with reference…
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    International Journal of Radiation Oncology * Biology * Physics - Articles in Press

  • Clinical Study of the Necessity of Replanning Before the 25th Fraction During the Course of Intensity-Modulated Radiotherapy for Patients with Nasopharyngeal Carcinoma - Corrected Proof

    Wei Wang, Haihua Yang, Wei Hu, Guoping Shan, Weijun Ding, Changhui Yu, Biyun Wang, Xufeng Wang, Qianyi Xu
    7 Feb 2010 | 4:00 pm
    Purpose: To quantify the target and normal structures on dose distributing variations during intensity-modulated radiotherapy (IMRT) and to assess the value of replanning for nasopharyngeal carcinoma (NPC) patients.Methods and Materials: Twenty-eight NPC patients treated with IMRT were recruited. The IMRT was delivered in 33 fractions, to 70 to 76Gy, to the gross tumor volume (GTV). Before the 25th fraction of IMRT, a new simulation computed tomography (CT) scan was acquired for all patients. According to the dose constraint criterion in the Radiation Therapy Oncology Group (RTOG) 0225…

  • Long-Term Outcome and Toxicity of Salvage Brachytherapy for Local Failure After Initial Radiotherapy for Prostate Cancer - Corrected Proof

    Ryan J. Burri, Nelson N. Stone, Pam Unger, Richard G. Stock
    4 Feb 2010 | 4:00 pm
    Purpose: To describe long-term outcomes and toxicity after salvage brachytherapy (BT) for local failure after initial radiotherapy for prostate cancer.Methods and Materials: Between 1994 and 2008, 37 men with local failure after initial prostate radiotherapy (32 external-beam radiation therapy [EBRT] and 5 BT) underwent salvage BT with 103Pd or 125I. Estimates of freedom from biochemical failure (FFbF, Phoenix definition) and cause-specific survival (CSS) were calculated using the Kaplan-Meier method. Toxicities were graded using CTCv3.0.Results: Median follow-up was 86 months (range,…

  • Preliminary Results on Setup Precision of Prone-Lateral Patient Positioning for Whole Breast Irradiation - Corrected Proof

    Liv Veldeman, Bruno Speleers, Marlies Bakker, Filip Jacobs, Marc Coghe, Werner De Gersem, Aline Impens, Sarah Nechelput, Carlos De Wagter, Rudy Van den Broecke, Geert Villeirs, Wilfried De Neve
    4 Feb 2010 | 4:00 pm
    Purpose: The aim of this study was to develop a rapid and reproducible technique for prone positioning and to compare dose–volume indices in prone and supine positions.Methods and Materials: Eighteen patients underwent computed tomography imaging for radiotherapy planning in prone and supine position. Experience was gained in the first eight patients, which lead to modifications of the Horizon prone breast board (Civco Medical Solutions, Orange City, Iowa, USA) and the patient setup technique. A unilateral breast holder (U-BH) was developed (Van de Velde, Schellebelle, Belgium) to retract…

  • Concurrent Liposomal Cisplatin (Lipoplatin), 5-Fluorouracil and Radiotherapy for the Treatment of Locally Advanced Gastric Cancer: A Phase I/II Study - Corrected Proof

    Michael I. Koukourakis, Alexandra Giatromanolaki, Michael Pitiakoudis, George Kouklakis, Pelagia Tsoutsou, Ioannis Abatzoglou, Marianthi Panteliadou, Kyriaki Sismanidou, Efthimios Sivridis, Teni Boulikas
    4 Feb 2010 | 4:00 pm
    Purpose: Liposomal drugs have a better tolerance profile and are highly accumulated in the tumor environment, properties that promise an optimal radiosensitization. We investigated the feasibility of the combination of 5-fluorouracil/lecovorin–based radio-chemotherapy with the administration of high weekly dose of a liposomal platinum formulation (Lipoplatin™).Methods and Materials: Lipoplatin was given at a dose of 120mg/m2/week, 5-fluorouracil at 400mg/m2/week (Day 1), whereas radiotherapy was given through 3.5-Gy fractions on Days 2, 3, and 4. Two groups of 6 patients received four and…

  • Behavior of Lipiodol Markers During Image Guided Radiotherapy of Bladder Cancer - Corrected Proof

    Xiangfei Chai, Marcel van Herk, Jeroen B. van de Kamer, Peter Remeijer, Axel Bex, Anja Betgen, Theo M. De Reijke, Maarten C.C.M. Hulshof, Floris J. Pos, Arjan Bel
    3 Feb 2010 | 4:00 pm
    Purpose: To investigate the stability of a novel type of markers used in partial bladder tumor irradiation and tumor deformation as indicated by the markers.Materials and Methods: In 15 patients with solitary bladder cancer, lipiodol was injected in the bladder wall during flexible cystoscopy to identify the tumor. A planning CT scan was made, followed by daily cone-beam CT (CBCT) scans during treatment. To study the accuracy of using these markers for image guidance, uncertainties U1 and U2 were calculated, which were defined as the difference between submask registration (covering single…
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    Journal of Clinical Ultrasound

  • Color Doppler sonographic evaluation of flow volume of the internal carotid and vertebral arteries after carotid endarterectomy

    Anka Mitrasinovic, Sandra Radak, Jovo Kolar, Nikola Aleksic, Petar Otasevic, Mirjana Popovic, Djordje Radak
    2 Feb 2010 | 5:20 am
    To measure by Doppler sonography the blood flow volume (BFV) of the ipsilateral and contralateral extracranial internal carotid arteries (ICAs) and both vertebral arteries (VAs) before and after a carotid endarterectomy (CEA) of the ICA. We correlated the result with the degree of stenosis of the ICA.One hundred seven patients who had a CEA were divided into 2 groups. Group I consisted of subjects with stenosis of ipsilateral ICA of [ge]70% to near occlusion and Group II included subjects with near occlusion. The Doppler sonographic examinations were performed 1 day before the CEA, 7 days…

  • Reliability study of the sonographic measurement of the acromiohumeral distance in symptomatic patients

    B. G. Pijls, F. P. Kok, L. I. F. Penning, N. A. Guldemond, H. J. Arens
    2 Feb 2010 | 5:20 am
    The purpose of this study was to evaluate the inter- and intra-observer reliability and accuracy of sonographic (US) acromiohumeral distance (AHD) measurement for both experienced and novice operators in US in patients suffering from subacromial impingement syndrome.A total of 43 patients (50 shoulders) diagnosed with subacromial impingement syndrome were recruited from an orthopedic outpatient clinic. The US measurement of AHD was obtained consecutively in a neutral position and in a 60° abduction position. A total of 300 blinded measurements were taken.In the neutral abduction group the…

  • Further observations on the empty "amnion sign"

    N. Tugce Yegul, Roy A. Filly
    2 Feb 2010 | 5:20 am
    To assess the positive predictive value of the empty "amnion sign" (visualization of an amnion without concomitant visualization of an embryo) for the diagnosis of early pregnancy failure.Retrospective study of 882 1st trimester sonographic examinations with abnormal findings among women who were threatening to abort. Eight hundred six met the inclusion criteria.In the study cohort 286 (35.5%) had no identifiable embryo and 71 of those without an identifiable embryo had a visible amnion (24.8%). The breakdown of the mean sac diameter of the study cohort was as follows: those…

  • Role of sonography in the emergency room to diagnose sternal fractures

    Je Sung You, Yong Eun Chung, Donghyun Kim, Saehwan Park, Sung Pil Chung
    2 Feb 2010 | 2:51 am
    The diagnosis of a sternal fracture is often difficult when the fracture site shows only minimal displacement on conventional radiography. Recently, sonography (US) has been used widely in the emergency room (ER). We investigated the diagnostic performance of US in the ER for the diagnosis of sternal fractures.Thirty-six consecutive patients examined for pain and tenderness in the sternum after blunt chest trauma were enrolled in the study. Antero-posterior and lateral radiographs and sonograms of the sternum were obtained within 24 hours after admission. The 2 imaging modalities were…

  • Re: Sonographic measurement of cross-sectional area of the median nerve in the diagnosis of carpal tunnel syndrome: Correlation with nerve conduction studies

    C. Pazzaglia, L. Padua
    2 Feb 2010 | 2:51 am
    No abstract.
 
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    Radiation Oncology - Latest Articles

  • FDG-PET/CT imaging for staging and target volume delineation in conformal radiotherapy of anal carcinoma

    Marco Krengli
    5 Feb 2010 | 4:00 pm
    Background: FDG-PET/CT imaging has an emerging role in staging and treatment planning of various tumor locations and a number of literature studies show that also the carcinoma of the anal canal may benefit from this diagnostic approach. We analyzed the potential impact of FDG-PET/CT in stage definition and target volume delineation of patients affected by carcinoma of the anal canal and candidates for curative radiotherapy. Methods: Twenty seven patients with biopsy proven anal carcinoma were enrolled. Pathology was squamous cell carcinoma in 20 cases, cloacogenic carcinoma in 3,…

  • A case report of pseudoprogression followed by complete remission after proton-beam irradiation for a low-grade glioma in a teenager: the value of dynamic contrast-enhanced MRI.

    Candice Meyzer
    3 Feb 2010 | 4:00 pm
    A fourteen years-old boy was treated post-operatively with proton therapy for a recurrent low-grade oligodendroglioma located in the tectal region. Six months after the end of irradiation (RT), a new enhancing lesion appeared within the radiation fields. To differentiate disease progression from radiation-induced changes, dynamic susceptibility contrast-enhanced (DSCE) MRI was used with a T2* sequence to study perfusion and permeability characteristics simultaneously. Typically, the lesion showed hypoperfusion and hyperpermeability compared to the controlateral normal brain. Without…

  • Loratadine dysregulates cell cycle progression and enhances the effect of radiation in human tumor cell lines

    Benjamin Soule
    2 Feb 2010 | 4:00 pm
    Background: The histamine receptor-1 (H1)-antagonist, loratadine has been shown to inhibit growth of human colon cancer xenografts in part due to cell cycle arrest in G2/M. Since this is a radiation sensitive phase of the cell cycle, we sought to determine if loratadine modifies radiosensitivity in several human tumor cell lines with emphasis on human colon carcinoma (HT29). Methods: Cells were treated with several doses of loratadine at several time points before and after exposure to radiation. Radiation dose modifying factors (DMF) were determined using full radiation dose response…

  • Neoadjuvant radiotherapy of primary irresectable unicentric Castleman's disease: a case report and review of the literature

    Iris de Vries
    1 Feb 2010 | 4:00 pm
    Background: Castleman disease (CD) is a rare benign disorder characterized by hyperplasia of lymphoid tissue that may develop at a single site or throughout the body. The etiology of this disorder is unclear, although the histopathological presentation can be differentiated into a hyaline vascular variant, a plasma cell variant and a mixed variant. Clinically, it has been recorded that 3 manifestations of CD are characterized: a localized unicentric type, a generalized multicentric type and a mixed form. Surgery remains the main treatment for resectable unicentric CD, since removal of the…

  • Ramipril mitigates radiation-induced impairment of neurogenesis in the rat dentate gyrus

    Kenneth Jenrow
    31 Jan 2010 | 4:00 pm
    Background: Sublethal doses of whole brain irradiation (WBI) are commonly administered therapeutically and frequently result in late delayed radiation injuries, manifesting as severe and irreversible cognitive impairment. Neural progenitors within the subgranular zone (SGZ) of the dentate gyrus are among the most radiosensitive cell types in the adult brain and are known to participate in hippocampal plasticity and normal cognitive function. These progenitors and the specialized SZG microenvironment required for neuronal differentiation are the source of neurogenic potential in the adult…
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    WordPress Tag: Radiology

  • Earn Your A.A.S. in CNA at Trocaire College

    trocaire
    9 Feb 2010 | 12:00 am
    Computer networks have become the backbone of every business, education, and government institution that uses computers. Our A.A.S in Computer Network Administration Program teaches students to create and support networks to ensure they operate efficiently and securely. Our staff is committed to a lifelong learning experience, which we pass down to our students. CNA is an extremely dynamic field. At Trocaire, we are constantly changing and growing to fit the computing needs of our students, consumers and companies. Candidates for this program should be naturally curious and passionate about…

  • Imaging for acute kidney injury (acute renal failure): good practice recommendations from the National Imaging Board [UK] - 4 February 2010

    kinwahlin
    8 Feb 2010 | 6:28 pm
    Imaging for acute kidney injury (acute renal failure): good practice recommendations from the National Imaging Board [UK] – 4 February 2010 Document type:   Publication Author:   National Imaging Board “The National Imaging Programme is led by Dr Erika Denton, National Clinical Lead for Diagnostic Imaging and chair of the National Imaging Board. The Imaging Programmes focus has been on reducing waiting times for imaging services in line with the 18 weeks target. The focus is now on sustaining these low waits; along with addressing wider diagnostic imaging issues to improve the…

  • SHORT LECTURE NOTES ON MEDICAL IMAGING METHODS (SEMINAR TOPICS)

    KUSH
    7 Feb 2010 | 9:33 am
    3D ULTRASOUND 3D IMAGING ELECTRON BEAM TOMOGRAPHY MICRO COMPUTED TOMOGRAPHY ORTHOPANTOMOGRAPHY POSITRON EMISSIONTOMOGRAPHY 1 POSITRON EMISSIONTOMOGRAPHY 2 SCANNING ELECTRON MICROSCOPY ULTRASOUND COMPUTED TOMOGRAPHY IMAGING OF BRAIN FUNCTIONS COMPUTED TOMOGRPAHY DIGITAL RADIOGRAPHY FUNCTIONAL MRI IMAGING FUSION HISTORY OF MEDICAL IMAGING STUDY OF OPTICAL IMAGING IMAGE RECONSTRUCTION TERAHERTZ IMAGING

  • Scientists issue comprehensive report into health effects of ultrasound - [UK] Health Protection Agency - 2 February 2010

    kinwahlin
    5 Feb 2010 | 12:11 am
    Scientists issue comprehensive report into health effects of ultrasound – [UK] Health Protection Agency – 2 February 2010 “The independent Advisory Group on Non-Ionising Radiation (AGNIR), which reports to the Health Protection Agency, has reviewed the latest scientific evidence on the health effects of ultrasound (frequencies above 20 kilohertz) and infrasound (below 20 Hz). The report finds that the available evidence does not suggest that diagnostic ultrasound affects mortality of babies during pregnancy or soon after birth. The evidence also does not suggest any effect…

  • Go Red for Women: National Wear Red Day is Friday, February 5, 2010

    JMB
    2 Feb 2010 | 12:32 pm
    Mothers, daughters, sisters, aunts — everyday women are dying at the rate of almost one per minute.
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    scan man's notes

  • Happy Pongal

    Vijay
    13 Jan 2010 | 6:59 pm
    Wishing everyone a Happy Pongal & a prosperous New Year Thai Pongal (தை பொங்கல்), the Tamil harvest festival holds a special significance for me as I was born on the first day of the Tamil month Thai (தை), which falls on January 14 this year. The picture above, a joint venture with my daughter (done three years ago), depicts a typical bucolic Pongal scene. Items to note are the decorated pot (பொங்கல் பானை) on a traditional wood-burning mud stove with rice water boiling over, the sugarcanes and turmeric (கரும்பு,…

  • SurgeXperiences 310

    Vijay
    14 Nov 2009 | 4:30 pm
    … From Blogs: Dr. Bruce Campbell, a Professor of ENT Surgery, known informally among medical bloggers as Headmirror, doesn’t think it’s a good idea to nap in the operating room and talks about the difficulty that most of us have leaving work behind even when we take a break.  Bruce, is the “Blogging Surgeon” on WUWM - Milwaukee Public Radio! Scroll to the bottom of this link and listen. It’s well worth your time. Our intrepid surgeon from the South African low veld, Bongi, has a run in with the good old boy setup that exists in all academic hospitals and…

  • SurgeXperiences 310 - Call for submissions

    Vijay
    9 Nov 2009 | 6:07 am
    … The next edition SurgeXperiences 310 will be hosted by me in this blog on November 15, 2009. Deadline for submissions is midnight on Friday, November 13. Please send in your submissions early via this form. SurgeXperiences is a blog carnival about surgical blogs. It is open to all (surgeon, nurse, anesthesia, patient, etc) who have a surgical blog or article to submit. The current edition (309) is hosted by the quilting plastic surgeon Ramona Bates. Here is the catalog of past SurgXperiences editions for your reading pleasure. If you wish to host a future edition, please contact…

  • The Week: Medical & Dental Councils of India are cancerous

    Vijay
    12 Oct 2009 | 8:59 pm
    Note: This post is related to the previous post requesting support for the NCHRH bill that is likely to be proposed in the Indian Parliament this year. Again, I would greatly appreciate any publicity that you can give for this issue. Please link, reblog, tweet, digg, stumble, or share in all the other myriad ways of Web 2.0. The current issue of The Week (only available on newstands, the website shows last week’s issue) has an article by Gunjan Sharma on the Medical and Dental Councils of India. I urge everyone to read the article. Some excerpts and my opinions (in italics)… Medical…

  • Paul Levy on Safe, Quality Hospital Care

    Vijay
    29 Sep 2009 | 12:08 am
    Note: Though this is a medical post that concerns hospital care in the USA, I believe the issues covered in these videos are universally applicable to hospitals and patients all over the world. I urge everyone, especially those visitors who are not from the USA to view the videos. In a series of three short videos, produced by Dr. Val Jones of Better Health,  Paul Levy, President & CEO of Beth Israel Deaconess Medical Center, and author of the blog Running a Hospital talks about providing safe, quality care in hospitals. In the first video Paul discusses his innovative approach to…
 
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    WordPress Tag: X-Ray

  • X-ray Apparatus & Tubes: Industry Cluster Report

    xraynews
    9 Feb 2010 | 3:57 am
    Industry segments analyzed in the report include: ‘X-ray apparatus and tubes, X-ray apparatus and tubes misc., Radiographic X-ray apparatus and tubes, Therapeutic X-ray apparatus and tubes. This report examines industry segment sales, small business vitality, failure and startup rates, sales per employee and other critical market research measures.

  • Ghosts in the media art machine

    squaresofwheat
    8 Feb 2010 | 3:15 pm
    Kinetica Art Fair. Photo: flickr.com/jellybean It’s one of those what-do-you-call-it dilemmas. In the way that ‘Artists’ Film and Video’ has embraced and displaced terms like ‘avant-garde’, ‘experimental film’ and ‘video art’, so ‘(New) Media Art’ has kicked out ‘digital art’, ‘interactive art’ and so forth as a useful name for a messy field of practice. Myself, I cleave to ‘net.art’ (or even ‘internet art’) in the way that I prefer ‘experimental film’: not because I think it’s a better and more descriptive term, but because I both prefer a…

  • Nikon Metrology - Examination and Measurement of Medical Devices and Components

    Metrology Solutions Provider
    8 Feb 2010 | 9:05 am
    Nikon Metrology offers a complete range of examination and measurement services for the inspection of medical devices and components. These include microscopy, manual metrology, automated non-contact video measuring, non-contact geometry inspection, X-ray radiography and computed tomography. Nikon Metrology offers a wide range of CT solutions that all feature in-house-built X-ray sources that give very sharp, high-resolution images. Real-time radiography enables interactive visual inspection, but automation capabilities are available for the inspection of larger batches. Read this full…

  • Monday 8th February 2010 | About Me | Last Shuttle Night Launch

    mixvargen
    8 Feb 2010 | 7:17 am
    Welcome to my first diary entry. I intend these to be like personal diary entries. By this I mean, the kind of entry one would write in a book, not necessarily a blog. So they’re written for my own ‘posterity’; but shared with you. I hope you may find some inspiration along the way. Before I continue simply in this vein, because you are reading the entries, some “stuff”. Firstly, please be aware that I keep the copyright on my diary entries (all rights reserved). Secondly, if you have constructive comments, you’re most welcome. Please note that I moderate…

  • ICTS puts bite into Counter Terror Expo 2010

    bhutchins
    8 Feb 2010 | 2:04 am
    UK: ICTS already provides sniffer dog search teams at some prestigious venues such as Docklands, The Tower of London, and Lord’s cricked ground, nuclear and correctional facilities. In addition to the traditional deployment of specialist sniffer dogs, their ICTS RASCargO solution delivers a unique and fast air screening capability for screening cargo. This ensures there are no hidden contraband items hidden in items that are too large and bulky to be screened by x-ray. Today ICTS has established RASCargO screening operations throughout UK, France, Holland, Israel, Singapore and South Africa…
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    Medsphere.org : All Content - Radiology

  • Referred OP

    14 Jan 2010 | 1:06 pm
    How do you manage the referred OP when the ordering physician is not part of your network? Who orders the exams, are they signed? entered directly into radiology....how are the results routed to the proper place? How are critical results handled in this situation?

  • Open Source PACS?

    11 Feb 2009 | 1:03 pm
    I'm looking to help a district hospital move into the 20th century...  Can anyone recommend an open-source PACS solution? Easy of installation and use are critical factors in deciding which solution will be viable. TIA,David Kerrins

  • Open Source PACS

    3 Nov 2008 | 10:30 pm
    Hi,        One of the things "missing" from the FOSS stacks available is a PACS system. Have any of the Medpshere mono wonks taken a look at ClearCanvas? http://www.clearcanvas.ca/ If this technology worked it would be very vauable, but a .NET stack is unacceptable to purists like me. Since I know so little about it, (and mono for that matter) it is difficult to tell if they are for real. But this should be easy for some of mono people with Medsphere. Is this usable? Is this something that can run on the Linux/Mono stack? -FT

  • Radiology Work List

    16 Oct 2008 | 2:29 pm
      The radiology package in OpenVista provides all of the features and functions needed for exam order, transcription and result reporting. However, the package does not have a dashboard view of patient activity. The radiology package has limited work list functionality. A report can be manually run to display the status of patients in the system. However, the report does not include patients who have not been registered. Any patient who has a future exam does not display on the report. Without a view of pending exam patients the radiology department does not know what patients…
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    Health Imaging

  • FDA launches three-pronged initiative to reduce radiation exposure

    9 Feb 2010 | 7:24 am
    The FDA today launched an initiative to reduce unnecessary radiation exposure from three types of medical imaging procedures: CT, nuclear medicine studies and fluoroscopy.

  • Study: Single-cell imaging can identify gene interactions

    9 Feb 2010 | 4:37 am
    In a study published online Feb. 9 in Genome Research, researchers showed that high-throughput single-cell image-based data from genetic screens can be used to identify genetic interactions and to infer signaling relations.

  • KLAS: Don't believe the HIE hype

    8 Feb 2010 | 12:13 pm
    Only a relatively small number of vendors are able to claim a proven, repeatable health information exchange (HIE) model, according to a report from KLAS, a healthcare market research firm. In total, the report highlights the commercial HIE models from 22 vendors, most of which have one, two or three validated sites.

  • ASTRO, ACR issue radiotherapy guidelines

    8 Feb 2010 | 12:10 pm
    Through a collaborative effort by the American Society for Radiation Oncology (ASTRO) and the American College of Radiology (ACR), practice guidelines for image guided radiation therapy and stereotactic body radiation therapy have been created and released to assist practitioners in providing appropriate radiologic care for patients.

  • Study: New CATCH rule standardizes CT use for pediatric head injuries

    8 Feb 2010 | 10:52 am
    A new clinical decision rule identifying children at two levels of risk has been developed by researchers to facilitate a physicians’ decision for administering CT scans to children presenting with minor head injuries, according to a study published online Feb. 8 in the Canadian Medical Association Journal
 
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