The clinical effectiveness of CTC in the U.S. was demonstrated by data published in the New England Journal of Medicine in August 2008 from the National U.S. Computerized Tomography (CT) Colonography Trial (ACRIN study 6664). The study showed CT-Colonography had comparable effectiveness to optical colonoscopy in detecting colonic polyps or cancers of 10mm and larger. In addition, the American Cancer Society earlier this year endorsed CTC in its updated screening guidelines, evidence that the clinical value of CTC as a screening technique for colorectal cancer is gaining further clinical relevance and acceptance.
About Computer-Aided Detection (CAD)
With increasingly sophisticated radiological imaging hardware such as Multi-Detector CT scanners, radiologists are facing a growing challenge in the amount of detailed patient image data that they must review for each patient examination. Some CT scan examinations generate as many as 2000 images per patient. Review of this data by the radiologist is not only time-consuming but also prone to error due to reader fatigue. CAD software can help the reviewing radiologist by analysing the image data and automatically highlighting suspicious regions of interest for closer inspection. Without CAD software some potential abnormalities or areas of disease may be overlooked. This can be critical for diagnosis and the management of patient outcomes as early detection of disease greatly increases the probability of successful treatment and a positive therapeutic outcome. In addition to supporting individual
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