Eric Barnes[email protected]MRIMRI phase-mapping quantifies regional wall motionThe assessment of myocardial wall motion plays a key role in diagnostic and therapeutic decision-making, but wall motion is extremely difficult to assess quantitatively. Physicians from Oxford University in the U.K. believe they've found a comprehensive and reproducible method of assessing regional wall motion in tissue with phase mapping (TPM) of MRI data, a technique based on phase velocity.April 2, 2006CTMDCT highly sensitive for aortic dissectionA recent study of patients who underwent MDCT imaging for symptoms suggestive of aortic dissection showed that the modality was highly sensitive and specific for all types of dissection. CT is also faster and generally more accurate than the alternatives, including MRI, ultrasound, and even the invasive gold standard exam, aortography, according to the study authors.March 28, 2006CTTagged VC succeeds where colonoscopy fails in elderlyEven in expert hands, optical colonoscopy fails to reach the cecum in at least 10% to 15% of patients, with a progressively greater failure rate among elderly and frail patients. A new study from Italy suggests that virtual colonoscopy with fluid and fecal tagging may be an ideal replacement. In patients with failed conventional colonoscopy, VC identified several cancers and earned high marks for patient comfort.March 27, 2006CTMDCT in pregnant women yields low fetal dosesA new phantom study concludes that institutional MDCT protocols, when used in pregnant women, yield radiation doses well below levels thought to induce neurologic harm to the developing fetus, although the risk of its eventually developing cancer later in life may still be elevated for certain exams that expose the fetus directly.March 26, 2006CT64-slice CTA reliably detects stenoses by patient, less so by vessel and segmentAs CT piles on more detector rows, its ability to detect significant coronary artery stenosis is growing apace. Sixty-four-detector CT results are beginning to rival -- though not yet quite equal -- those of the invasive gold standard test, coronary angiography. A new study offers evidence that CT angiography (CTA) finds nearly all patients with significant stenosis, though individual blockages can still be missed.March 22, 2006Image ProcessingThe more CT detectors, the more MPRs helpRadiologists know the value of multiplanar reconstructions (MPRs) for finding what's wrong. In the abdomen, cross-referencing coronal images with the axials can sometimes reveal subtle pathologies that might otherwise be missed. But some might be surprised to learn that the more detectors rows in the scanner, the more useful MPRs are to the diagnosis.March 21, 2006CTGastroenterologist surveys target lesions, VC practiceDr. David Lieberman, gastroenterologist and noted expert in colon cancer screening, thinks virtual colonoscopy has an important job to do. The former American Society for Gastrointestinal Endoscopy president believes that VC and its associated lesion surveillance offer an unprecedented opportunity to learn more about the natural history of colorectal polyps.March 19, 2006CTColon CAD helps expert readersIn a study by researchers from London, virtual colonoscopy computer-aided detection (CAD) software beat the experts in detecting medium-sized polyps, though the system is designed for interaction with radiologists rather than competition.March 15, 2006CTTelltale barium coating could help VC find risky polypsVirtual colonoscopy practitioners have a new and potentially useful way to identify colorectal polyps at increased risk of harboring high-grade dysplasia or cancer, a study from the National Institutes of Health (NIH) suggests.March 14, 2006CTCT measures post-transplant bronchiolitis obliterans severityCanadian researchers are using CT to assess the severity of bronchiolitis obliterans syndrome (BOS), the most common cause of late death among lung transplant patients. In preliminary experiments, CT attenuation data corresponded to disease severity, and a related study found that high-resolution MDCT beat conventional high-resolution CT (HRCT) in detecting and characterizing BOS.March 13, 2006Previous PagePage 194 of 258Next PageTop StoriesMolecular ImagingPET predicts faster cognitive decline in women than menWomen initially outperformed men at low brain tau levels, but the advantage diminished as tau levels increased over time.MRIUnclear explanations of contrast MRI exams heighten patient anxietyWomens ImagingMammography screening improves survival for late-stage cancersUltrasoundUltrasound MinnieCast, Episode 2: Body imaging with RUS-PATSponsor ContentHow Agentic AI Is Transforming Radiology Ops