Wider 3D viewing angle may aid polyp detection September 9, 2008 -- Virtual colonoscopy readers saw a greater percentage of the colonic mucosa by increasing the field-of-view on their 3D software to match that of a standard colonoscope. However, the wider viewing angle may have also reduced polyp conspicuity and increased distortion, with unknown effects on detection sensitivity.
MRI can provide safe imaging for pediatric heart patients August 29, 2008 -- Cardiovascular MRI can be performed safely, with low risk and limited hemodynamic changes, on infants with congenital heart disease, according to a study conducted at the Heart and Diabetes Center in Bad Oeynhausen, Germany.
PET dose-painting methods produce discordant results August 27, 2008 -- As intensity-modulated radiation therapy becomes more sophisticated, oncologists are investigating new dose-painting methods to determine which areas of tumor target volume should receive additional radiation dose. But a new study indicates that two promising methods to guide dose painting actually produce sharply varied results.
Automated polyp measurement supports risk assessment August 26, 2008 -- Automated polyp-measurement software performed as well as human readers in a study that could lead to more efficient screening with virtual colonoscopy. The study sought to evaluate the accuracy of an automated polyp size measurement tool and its effectiveness for risk stratification in 305 subjects.
ROI changes colorectal tumor perfusion measurements August 26, 2008 -- The development of automated perfusion-mapping software for CT data has opened up intriguing possibilities for the assessment of tumor vascularity, specifically for monitoring response to antiangiogenic drug treatment. But where, precisely, to measure tumor vascularity is a question that had not been addressed, according to U.K. researchers.
PET with C-11 PiB can assess beta-amyloid brain deposits August 12, 2008 -- PET using carbon-11-labeled Pittsburgh Compound B (C-11 PiB) shows promise for assessing beta-amyloid deposits in the brain and may have a potential role as a diagnostic aid for early Alzheimer's disease, according to research published online in the Archives of Neurology.
US-guided core-needle breast biopsy offers alternative to surgery August 7, 2008 -- Researchers at the Medical University of Vienna and Memorial Sloan-Kettering Cancer Center studied 14-gauge ultrasound-guided biopsy's false-negative and underestimation rates, concluding that the technique provides an accurate alternative to surgical excision for evaluating nonpalpable breast lesions.
PACS data-mining tool analyzes CR retake rates August 5, 2008 -- Researchers from Spain have developed software that analyzes PACS data to automatically perform quality control analysis of retake rates of computed radiography studies. They believe their QC tool could make it easier for imaging facilities to reduce retakes and improve the overall quality of service.