Eric Barnes[email protected]CTMedicare changes, joint meetings spell progress for VCVirtual colonoscopy is making progress locally in the U.S. as regional Medicare carriers add indications. And a national meeting between the American Cancer Society and colorectal cancer experts promises a new airing of ideas for screening solutions.September 3, 2006Image ProcessingPart II: Medical image processing has room to growThe second installment of our series on 3D and virtual reality, based on talks at the 2006 Computer Assisted Radiology and Surgery (CARS) meeting in Osaka, Japan, discusses fundamental concepts in the development of volume-image modeling.September 3, 2006UltrasoundEcho functionality grows with processing powerEchocardiography, already the most versatile cardiac imaging tool in the box, is poised to get a lot better in the years to come. Many promising applications -- in transducers, miniaturization, and visualization and quantification of cardiac function -- are already developed and operational. More are on the way.August 30, 2006CTAuntMinnie.com Virtual Colonoscopy InsiderAugust 29, 2006CTBarriers still hinder lung CAD adoptionA decade into the game, lung CAD appears to work well enough to be considered a serious tool for screening CT lung data. Several studies have shown gains in detecting clinically significant nodules. So why don't more radiologists use CAD in daily practice? There are many reasons, but most revolve around workflow and practice issues rather than the efficacy of CAD itself.August 23, 2006CTStudy pits CT against MRI for virtual colonoscopyMR colonography offers the promise of radiation-free colorectal exams, excellent soft-tissue contrast, and contrast agents with a better safety profile. But in a polyp-to-polyp face-off in a phantom study, researchers in Germany found that CT colonography (or virtual colonoscopy) still had a sensitivity edge, especially at normal dose levels.August 22, 2006CTVC visualization tool combines advanced featuresSome of the best ideas developed for virtual colonoscopy over the years are being refined and combined to create an advanced exam tool. Researchers from Japan are building Navi-CAD, a comprehensive VC exam system that combines unfolded views of the colonic mucosa, automated polyp detection, and unobserved region detection.August 16, 2006CTAuntMinnie.com CT InsiderAugust 15, 2006CTPulmonary nodule decisions must be individualizedIn dealing with the onslaught of pulmonary nodules from multidetector-row CT, radiologists are finding they need to hone their management strategies or risk being inundated. One strategy is based on established size and risk guidelines as well as individual patient factors and nodule morphology. Meanwhile, a new study suggests that gene-expression profiles could potentially improve the management of early-stage lung cancer patients.August 15, 2006Image ProcessingNew method corrects for hyperattenuation surrounding tagged VC dataFluid and fecal tagging is a proven method of distinguishing polyps from residual materials in virtual colonoscopy. But tagged, highly attenuated regions tend to "bleed" into adjacent structures on CT images. Researchers from Boston are addressing the problem with a method to electronically subtract the spillover attenuation without otherwise affecting the images.August 7, 2006Previous PagePage 187 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