Author/Editor | Guillemet, H; Benali, H; Kahn, E; Di Paola, R | |
Title | A multistage methodology for detection of microcalcifications in digital mammography | |
Type | članek | |
Source | Acta Stereol | |
Vol. and No. | Letnik 15, št. 2 | |
Publication year | 1996 | |
Volume | str. 125-30 | |
Language | eng | |
Abstract | This paper describes a corase-to-fine approach for detection and segmentation of clustered microcalcifications. Starting from digitized images of whole mammographic films, the method involves three main stages. First, the breast is segmented. Then a texture analyzer based on the fractional Brownian motion model is applied to select those regions that may contain a cluster. The last stage computes the isophote map of the selected regions and considers the relative positions of isophotes to recognize the microcalcifications. The method was evaluated using a database of 150 mammographic images of patients who underwent a surgical biopsy for a cluster of microcalcifications. In 95% of mammograms, the clusters are correctly localized if we accept an average 1,5 false positive cluster per mammography. | |
Descriptors | MAMMOGRAPHY CALCINOSIS IMAGE PROCESSING, COMPUTER-ASSISTED BREAST NEOPLASMS |