Small colon polyps on VC suggest presence of larger lesions April 16, 2010 -- Individuals with several diminutive colon polyps on virtual colonoscopy studies are far more likely than other screening subjects to also have a larger colorectal lesion, say researchers from the University of Munich in Germany.
Automated exposure control delivers uneven CT dose reduction April 15, 2010 -- Reducing tube current may be a popular way to lower CT radiation dose, but it's not necessarily an effective one. In a new study, medical physicists from Greece found that organ dose reductions resulting from tube current modulation with automated exposure control can vary -- especially in children.
MR scans may detect signs of early dementia in elderly April 14, 2010 -- TORONTO - MRI can detect signs of white-matter hyperintensity in the elderly that may indicate three times the risk of developing dementia, according to a French study presented this week at the American Academy of Neurology's annual meeting.
CT shows abdominal fat is unreliable Crohn's treatment target April 14, 2010 -- A few reports have associated abdominal visceral fat with more aggressive forms of Crohn's disease, but the strength of the association -- and the implications for treatment -- remain unclear. Researchers from Ireland decided to try CT to resolve the issue.
Computer analysis bolsters liver elastography performance April 14, 2010 -- Computer-enhanced dynamic analysis of ultrasound elastography movies is a useful and reliable method for depicting liver hardness, yielding a high level of interreader agreement, according to research published April 14 in the World Journal of Gastroenterology.
Spanish study finds speech recognition saves time, money April 12, 2010 -- A large study of speech recognition that included nearly 140,000 reports has confirmed the technology's ability to dramatically reduce report turnaround time while saving money. Researchers found that speech recognition slashed turnaround time from about 5.5 hours with conventional transcription to just over one hour.
Less DNA damage seen after high-pitch coronary CTA April 9, 2010 -- High-pitch dual-source CT angiography (CTA) scans produce significantly less radiation-related DNA damage than comparable low-pitch dual-source CTA scans -- and, importantly, the DNA results correspond to both measured and derived biological radiation doses, say researchers from Erlangen, Germany.
Exposure index values vary widely between CR systems April 9, 2010 -- Imaging facilities trying to reduce digital x-ray dose are turning to exposure index (EI) values to see how much radiation patients receive. New research indicates that while this is a good idea for digital radiography, it's not so hot for computed radiography (CR) due to wide variation in EI measures.
Authors of Nordic mammo study no strangers to controversy April 6, 2010 -- The debate over mammography got hotter last month with the publication of a study by Nordic researchers claiming there's no evidence that mammography screening reduces death rates. Some mammography advocates have taken issue with what they say is an antiscreening bias on the part of the research group.
Open-source software increases colon polyp conspicuity April 6, 2010 -- Visibility of colon polyps is increased and sensitivity improved with the use of threshold-based color-coding software in virtual colonoscopy, according to a new study from Italy. Even flat lesions were more often visible with use of the open-source 2D-based interpretation software.
Cardiac cath delivers high radiation doses to operators April 5, 2010 -- The rapid development of new cardiac stents and other medical devices is opening up a world of possibilities for interventional procedures in the cath lab -- but it's also exposing equipment operators to ever-higher radiation doses.