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Active contour models help identify breast boundary in mammograms.
2004 JUL 1 - (NewsRx.com & NewsRx.net) -- University of Calgary engineers have developed a new method to identify the breast boundary in mammograms.
They say their "method can be used in the preprocessing stage of a system for computer-aided diagnosis (CAD) of breast cancer and also in the reduction of image file size in picture archiving and communication system applications."
According to R.J. Ferrari and colleagues, "The method started with modification of the contrast of the original image. A binarisation procedure was then applied to the image, and the chain-code algorithm was used to find an approximate breast contour. Finally, the identification of the true breast boundary was performed by using the approximate contour as the input to an active contour model algorithm specially tailored for this purpose. After demarcation of the breast boundary, all artifacts outside the breast region were eliminated."
They used the method for evaluating "84 medio-lateral oblique mammograms from the Mini-MIAS database. Evaluation of the detected breast boundary was performed based upon the percentage of false-positive and false-negative pixels determined by a ...
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Source: HighBeam Research, Active contour models help identify breast boundary in mammograms.