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first_imgNews | July 08, 2008 AHA Issues New Guidelines for CT, MR Coronary Angiography Technology | Neuro Imaging | August 07, 2019 Synaptive Medical Launches Modus Plan With Automated Tractography Segmentation Synaptive Medical announced the U.S. launch and availability of Modus Plan featuring BrightMatter AutoSeg. This release… read more Sponsored Content | Case Study | Radiation Dose Management | August 13, 2019 The Challenge of Pediatric Radiation Dose Management Radiation dose management is central to child patient safety. Medical imaging plays an increasing role in the accurate… read more Technology | Interventional Radiology | August 16, 2019 Profound Medical Receives U.S. FDA 510(k) Clearance for Tulsa-Pro Profound Medical Corp. announced it has received 510(k) clearance from the U.S. Food and Drug Administration (FDA) to… read more News | CT Angiography (CTA) | August 06, 2019 Artificial Intelligence Improves Heart Attack Risk Assessment When used with a common heart scan, machine learning, a type of artificial intelligence (AI), does better than… read more News | Cardiovascular Ultrasound | August 07, 2019 Contrast Use in First Transthoracic Echocardiogram for Heart Failure Reduces Repeat Testing Heart failure is the fourth most common cause for all admission to U.S. hospitals, and it is the most common reason for… read more News | Neuro Imaging | August 16, 2019 ADHD Medication May Affect Brain Development in Children A drug used to treat attention-deficit/hyperactivity disorder (ADHD) appears to affect development of the brain’s… read more Videos | CT Angiography (CTA) | August 07, 2019 VIDEO: Walk Around of a GE Cardiographe Dedicated Cardiac CT Scanner This is a quick walk around of the GE Healthcare Cardiographe dedicated cardiac CT system on display at the… read more July 9, 2008 – The American Heart Association recently issued new guidelines for computed tomography (CT) and magnetic resonance (MR) angiography, which state CT is the better imaging technology, but MR offers more patient safety because it does not use ionizing radiation. The authors of the guidelines wrote noninvasive coronary CT and MR represent substantial advances that may ultimately be valuable for diagnosis of significant coronary artery disease. The chief advantages of coronary CT compared with MR are wider availability, higher spatial resolution, and more consistent, shorter examinations with better patient adherence. Advantages associated with coronary MR are a lack of radiation and a lack of administration of iodinated contrast material. However, the authors of the guidelines said both tests are presently suboptimal for patients with atrial fibrillation and other arrhythmias, and image quality may be further reduced by high body mass. The new AHA guidelines state: 1. Neither coronary CT nor MR should be used to screen for coronary artery disease in patients who have no signs or symptoms suggestive of coronary artery disease. 2. The potential benefit of noninvasive coronary angiography is likely to be greatest and is reasonable for symptomatic patients who are at intermediate risk for coronary artery disease after initial risk stratification, including patients with equivocal stress-test results. Diagnostic accuracy favors coronary CT over MR for these patients. 3. Concerns regarding radiation dose limit the use of coronary CT in high-risk patients who have a very low pretest likelihood of coronary stenoses. Patients with a high pretest likelihood of coronary stenoses are likely to require intervention and invasive catheter angiography for definitive evaluation, so CT is not recommended for these individuals. Pronounced coronary calcification may negatively impact interpretability and accuracy of coronary CT so the usefulness of CT is uncertain in these individuals. 4. Anomalous coronary artery evaluation can be performed by either CT or MR. Radiation-protection concerns indicate that MR is preferred when it is available. 5. Reporting of coronary CT and MR results should describe any limitations to the technical quality of the examination and the size of the vessels, descriptions of coronary anomalies, coronary stenosis, and significant noncardiac findings within the field of view. 6. Continued research in cardiac CT and MR imaging is encouraged to determine the potential of these noncatheter-based modalities to detect, characterize, and measure atherosclerotic plaque burden, as well as its change over time or as the result of therapy. No multi-vendor trial data is available for coronary CT or for present whole-heart coronary MR, so the applicability of these methods beyond the reporting research centers is not known. Specific recommendations for use of these technologies are expected to change along with advances in scanner hardware and software, the report said. For more information: www.americanheart.org/presenter.jhtml?identifier=3004557 FacebookTwitterLinkedInPrint分享 The CT scanner might not come with protocols that are adequate for each hospital situation, so at Phoenix Children’s Hospital they designed their own protocols, said Dianna Bardo, M.D., director of body MR and co-director of the 3D Innovation Lab at Phoenix Children’s. Videos | CT Angiography (CTA) | August 07, 2019 VIDEO: Walk Around of a Siemens Go.Top Dedicated Cardiac Scanner This is a quick walk around of the new Siemens Somatom Go.top cardiovascular edition compact computed tomography (CT) read more Video Player is loading.GE Cardiographe cardiac CT scanner at SCCT19Play VideoPlayMuteCurrent Time 0:00/Duration 0:38Loaded: 26.15%Stream Type LIVESeek to live, currently playing liveLIVERemaining Time -0:38 Playback Rate1xChaptersChaptersDescriptionsdescriptions off, selectedCaptionscaptions settings, opens captions settings dialogcaptions off, selectedAudio Trackdefault, selectedFullscreenThis is a modal window.Beginning of dialog window. Escape will cancel and close the window.TextColorWhiteBlackRedGreenBlueYellowMagentaCyanTransparencyOpaqueSemi-TransparentBackgroundColorBlackWhiteRedGreenBlueYellowMagentaCyanTransparencyOpaqueSemi-TransparentTransparentWindowColorBlackWhiteRedGreenBlueYellowMagentaCyanTransparencyTransparentSemi-TransparentOpaqueFont Size50%75%100%125%150%175%200%300%400%Text Edge StyleNoneRaisedDepressedUniformDropshadowFont FamilyProportional Sans-SerifMonospace Sans-SerifProportional SerifMonospace SerifCasualScriptSmall CapsReset restore all settings to the default valuesDoneClose Modal DialogEnd of dialog window.Close Modal DialogThis is a modal window. This modal can be closed by pressing the Escape key or activating the close button. News | Magnetic Resonance Imaging (MRI) | August 06, 2019 Canon Medical Introduces Encore Orian MR Upgrade Program Canon Medical Systems USA Inc. is helping to provide low-cost patient care solutions for its customers with the launch… read more Related Content Siemens Go.Top CT scanner at SCCT19Video Player is loading.Play VideoPlayMuteCurrent Time 0:00/Duration 1:05Loaded: 15.14%Stream Type LIVESeek to live, currently playing liveLIVERemaining Time -1:05 Playback Rate1xChaptersChaptersDescriptionsdescriptions off, selectedCaptionscaptions settings, opens captions settings dialogcaptions off, selectedAudio Trackdefault, selectedFullscreenThis is a modal window.Beginning of dialog window. Escape will cancel and close the window.TextColorWhiteBlackRedGreenBlueYellowMagentaCyanTransparencyOpaqueSemi-TransparentBackgroundColorBlackWhiteRedGreenBlueYellowMagentaCyanTransparencyOpaqueSemi-TransparentTransparentWindowColorBlackWhiteRedGreenBlueYellowMagentaCyanTransparencyTransparentSemi-TransparentOpaqueFont Size50%75%100%125%150%175%200%300%400%Text Edge StyleNoneRaisedDepressedUniformDropshadowFont FamilyProportional Sans-SerifMonospace Sans-SerifProportional SerifMonospace SerifCasualScriptSmall CapsReset restore all settings to the default valuesDoneClose Modal DialogEnd of dialog window.Close Modal DialogThis is a modal window. This modal can be closed by pressing the Escape key or activating the close button. Images of regions of interest (colored lines) in the white matter skeleton representation. Data from left and right anterior thalamic radiation (ATR) were averaged. Image courtesy of C. Bouziane et al. News | Artificial Intelligence | August 05, 2019 Montefiore Nyack Hospital Uses Aidoc AI to Spot Urgent Conditions Faster Montefiore Nyack Hospital, an acute care hospital in Rockland County, N.Y., announced it is utilizing artificial… read morelast_img read more