Echocardiography test beats SPECT for predicting problems after MI
December 7, 2009 -- NEW YORK (Reuters Health), Dec 7 - Myocardial contrast echocardiography is superior to nitrate-enhanced SPECT in predicting cardiac death and other cardiac events after acute myocardial infarction, say researchers from the U.K. in the November 1 American Journal of Cardiology.
Sequential trastuzumab does poorly in European breast cancer study
December 3, 2009 -- NEW YORK (Reuters Health), Dec 3 - In women with axillary node-positive breast cancer, giving trastuzumab after the end of adjuvant chemotherapy and radiation did not significantly reduce their risk of relapse, European researchers report online in the Journal of Clinical Oncology.
Contrast dose halved in coronary CTA
December 2, 2009 -- CHICAGO - Contrast doses for CT angiography (CTA) are too high, but they can be lowered substantially with the right equipment and careful attention to technique, according to researchers from Charité University Medical School in Berlin.
Coronary CTA edges CMR in a tight race
December 1, 2009 -- CHICAGO - In a head-to-head comparison of two closely watched modalities, low-dose dual-source coronary CT angiography (CTA) outperformed cardiac MR (CMR) in sensitivity, specificity, and negative predictive value. But 1.5-tesla CMR countered with better specificity and positive predictive value.
Scientific poster digital format offers potential to transform medium
November 30, 2009 -- CHICAGO - Displaying scientific posters in digital format at this year's RSNA meeting allows authors not only to convey facts, graphs, and photos, but also to incorporate some interactive functionality. Onsite digital displays offer huge potential to educate readers in ways that even the best developed paper poster cannot.
Surveillance polyps show little growth at follow-up
November 30, 2009 -- CHICAGO - A preliminary study from Italy adds weight to the argument that two- to three-year surveillance of 6- to 9-mm polyps doesn't unduly increase the risk of colorectal cancers. Diminutive polyps grow faster but present less cause for concern.
Seasonal variation seen in brown adipose tissue
November 27, 2009 -- NEW YORK (Reuters Health), Nov 27 - Brown adipose tissue is much more active in humans during the winter than in the summer, according to a report in the November issue of Diabetes. Researchers looked at 3,614 patients who underwent CT and PET, mostly for cancer staging purposes.
Optical sensor tracks radiotherapy treatment site breast motion
November 26, 2009 -- Postsurgical radiotherapy is an effective way of preventing breast tumors from reappearing, but the downside is the mismatch between ideal treatment plans and the doses actually delivered. Although conformal methods of delivery could address this issue, switching delivery techniques raises another potential problem: Will breast motion compromise the accuracy of a highly targeted radiotherapy regimen?
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