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?
Automated segmentation could improve fetal heart echo
November 6, 2009 -- A new method of segmenting the fetal heart with echocardiography could improve the evaluation of congenital heart defects compared to the time-consuming manual segmentation in use today, according to researchers from the U.K.
Meta-analysis reveals paucity of advanced neoplasia in small polyps
November 2, 2009 -- The prevalence of advanced neoplasia in subcentimeter polyps is extremely rare, according to a new meta-analysis of virtual colonoscopy data from more than 20,000 patients. As a result, the study authors believe that it's unnecessary to incur the costs and risks associated with resecting diminutive colorectal lesions detected at VC.
Functional MRI may help with prognosis for comatose patients
October 26, 2009 -- French researchers have found good agreement between functional MRI (fMRI) and FDG-PET in assessing brain function in comatose patients. Their research indicates that fMRI potentially could help guide treatment of these individuals.
Ignoring breast CAD detections cuts sensitivity
October 23, 2009 -- Computer-aided detection (CAD) is effective at finding breast cancers -- including lesions that would have otherwise been missed by experienced radiologists. Unfortunately, CAD's overall benefit is diluted by the downside of radiologists ignoring true-positive CAD marks.
Contrast ultrasound may spot early signs of atherosclerosis
October 20, 2009 -- Contrast-enhanced ultrasound (CEUS) can allow for reliable quantification of the neovascularization of the carotid artery vasa vasorum, enabling early identification of a condition that can be a precursor to atherosclerosis, according to a presentation at this week's Advances in Contrast Ultrasound: ICUS Bubble Conference in Chicago.
'Spontaneous regression' debate erupts anew at ASCO symposium
October 12, 2009 -- SAN FRANCISCO - Is it possible that some breast cancers "spontaneously regress" and would otherwise become harmless if they weren't detected on screening mammography? The controversial theory was the topic of a heated debate at last week's American Society of Clinical Oncology's (ASCO) Breast Cancer Symposium.
FDG-PET uptake helps predict vascular events in cancer patients
October 9, 2009 -- German researchers have discovered that FDG uptake in major arteries is the "strongest predictor of a subsequent vascular event" in cancer patients, with severe calcification also indicating high risk, according to an article published in the October issue of the Journal of Nuclear Medicine.
Threats to ultrahigh-field MRI in Europe
October 9, 2009 -- A new European directive designed to prevent workers from being exposed to high magnetic fields could potentially have a severe impact on MRI research, warns Denis Le Bihan, director of the NeuroSpin intense-field neuroimaging project at the CEA-Saclay Center in Gif-sur-Yvette, France.
Austrian study uses MDCT to uncover tale of 12 mummies
October 5, 2009 -- Following the path of King Tut, Nefertiti, and other famed Egyptian figures, a collection of 500- to 1,000-year-old Chachapoyan mummies from northern Peru has now gone under the CT scanner -- a first in the study of this Andean people, according to research in the European Journal of Radiology.
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