Accession Number : ADA300109

Title :   Improved Mammographic Technique for Breast Cancer Diagnosis.

Descriptive Note : Annual rept. 11 Jul 94-10 Jul 95,

Corporate Author : MICHIGAN UNIV ANN ARBOR

Personal Author(s) : Chan, Heang-Ping

PDF Url : ADA300109

Report Date : 09 AUG 1995

Pagination or Media Count : 18

Abstract : The goal of the proposed research is to improve the sensitivity of cancer detection in mixed or dense breasts through optimization of mammographic techniques. We propose to develop a novel exposure equalization system that preferentially reduces the incident x-ray intensity in the peripheral region of the breast, thereby alleviating the problem of limited latitude of x-ray detectors. Optimal imaging technique can then be developed for improving image quality throughout the entire breast. The studies performed in the first year of the funding period confirmed that designing an x-ray equalization filter device for nearly patient-specific equalization in mammographic imaging is a viable approach. We conducted several studies in order to design the filter device: (a) testing of the breast shape classification method, (b) analysis of the exposure profile of breast images in order to design the exposure equalization filter, (c) development of a fully automated breast image segmentation and edge detection program on a personal computer (PC) to prepare for on-line analysis of patient breast shape. The results of these studies will be used for the implementation of the filter device as planned in the future years.

Descriptors :   *DETECTION, *DIAGNOSIS(MEDICINE), *CANCER, *MAMMARY GLANDS, IMAGE PROCESSING, OPTIMIZATION, DETECTORS, EXPOSURE(GENERAL), EDGES, SHAPE, INTENSITY, SENSITIVITY, X RAYS, REGIONS, PROFILES, QUALITY, IMAGES, CLASSIFICATION, MICROCOMPUTERS, FILTERS, PATIENTS, ONLINE SYSTEMS, SEGMENTED, LATITUDE, EQUALIZATION.

Subject Categories : Medicine and Medical Research
      Anatomy and Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE