Abdominal Imaging: Page 32

Virtual colonoscopy effective in higher-risk subjects
By AuntMinnieEurope.com staff writers
Virtual colonoscopy is an effective and less invasive alternative to conventional colonoscopy for individuals at elevated risk of colorectal cancer, according to a new study.
June 15, 2009
Readers undaunted by VC CAD false positives
By Eric Barnes
Radiologists examining data from virtual colonoscopy studies can easily dismiss increasing numbers of false-positive detections generated by computer-aided detection (CAD) systems, researchers from the U.K. report. But the presence of more false positives makes reading less efficient.
June 11, 2009
Virtual colonoscopy CAD improves flat-lesion detection
By Eric Barnes
Computer-aided detection (CAD) software can improve the detection of flat lesions at virtual colonoscopy -- as long as the lesions are at least 1 mm high. In a new study from Italy, CAD detected 94% of all flat lesions; however, radiologists dismissed a few of them incorrectly as false positives.
June 4, 2009
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Season may not alter cancer survival in short term
By Reuters Health
NEW YORK (Reuters Health), May 20 - Some studies have found that patients with certain cancers seem to survive longer when they're diagnosed during summer and autumn months, but it now appears that this may be largely due to higher death rates in general during winter months, report U.K. researchers from King's College London.
May 19, 2009
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VC not cost-effective in FOBT-positive screening population
By Eric Barnes
Patients with positive screening results on fecal occult blood tests (FOBTs) should probably head straight to optical colonoscopy for their next exam, according to a new study from the Netherlands. Virtual colonoscopy may not be cost-effective in this population because so many FOBT-positive patients would need referral for polypectomy anyway, the researchers said.
May 7, 2009
SharpView touts image-enhancing software results
By AuntMinnieEurope.com staff writers
Swedish firm SharpView, a partner of ContextVision, has received welcome clinical results from Massachusetts General Hospital that suggest its image-enhancing software helps reduce CT radiation dose.
April 29, 2009
US replaces x-ray for diagnosing childhood constipation
By Cynthia E. Keen
British pediatricians at a London children's hospital are using ultrasound to assess the severity of constipation in children. They have found that ultrasound is a good substitute for abdominal x-ray, with its radiation exposure, or a digital rectal examination, a procedure that children find unpleasant and disturbing.
April 26, 2009
VC CAD plus 3D improves sensitivity for novice readers
By Eric Barnes
Computer-aided detection (CAD) with 3D viewing improves sensitivity for polyp detection among less experienced readers, and may also speed up reading times and reduce false-positive detections. On the other hand, the performance of experienced readers did not improve significantly with CAD use, researchers from the University of Rome concluded.
April 20, 2009
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CT colonography may yet challenge colonoscopy
By Reuters Health
NEW YORK (Reuters Health), Apr 16 - Although CT colonography is a promising technique that has good sensitivity for detecting larger colon polyps and is less invasive than colonoscopy, it does not appear to be cost-effective for average-risk colorectal cancer screening. However, used in the right circumstances, the CT technique could prove to be economically viable, according to U.S. and Dutch researchers.
April 15, 2009
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Adding chest CT to VC not cost-effective, study finds
By Eric Barnes
Adding a chest CT scan to screening virtual colonoscopy isn't cost-effective in a cohort of average-risk patients, a new model-based analysis concluded. Although the additional anatomic coverage increased the clinical efficiency of CT-based screening, the combined test would not detect enough serious pathology to cover the costs of detection and follow-up of disease.
April 6, 2009
Fecal occult blood screening may help reduce colorectal cancer mortality
By Reuters Health
NEW YORK (Reuters Health), Apr 6 - Pilot studies indicate that a population-based approach to guaiac fecal occult blood testing (FOBT) appears likely to reduce colorectal cancer mortality, Scottish researchers report in the April issue of Gut.
April 5, 2009
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Virtual colonoscopy CAD finds most cancers
By Eric Barnes
A computer-aided detection (CAD) algorithm designed to find polypoid lesions of the colon also does fairly well at finding frank cancers, researchers from the U.K. concluded. But sensitivity varies depending on the system settings and the quality of the prep.
April 2, 2009
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