Pediatric CT dose is low but varies widely in Belgium
April 23, 2010 -- A national survey of scan protocol behavior and radiation dose at hospitals in Belgium has found that even though most facilities are generally keeping pediatric CT radiation dose low, there is still some variation between sites in terms of median dose levels.
3T MRA protocol has value but falls short in abdominal vasculature
April 19, 2010 -- A time-resolved 3-tesla MR angiography (MRA) technique that uses less contrast dose than conventional high-resolution MRI has some advantages in the abdominal aorta, but its lower signal-to-noise ratio means it probably won't supplant conventional MRA, according to a study in the May Academic Radiology.
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.
Dying cancer patients need shorter palliative radiation therapy
April 12, 2010 -- Radiation oncologists should be less concerned about late-onset radiation dose toxicities when planning palliative radiation therapy protocols for near-death cancer patients, according to a study published online today in Cancer.
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.
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