Reducing breast biopsies by ultrasonographic analysis and a modified self-organizing map

Yi Zheng; James F. Greenleaf; John J. Gisvold

doi:10.1117/12.274064

9 May 1997 Reducing breast biopsies by ultrasonographic analysis and a modified self-organizing map

Yi Zheng, James F. Greenleaf, John J. Gisvold

Proceedings Volume 3033, Medical Imaging 1997: Physiology and Function from Multidimensional Images; (1997) https://doi.org/10.1117/12.274064
Event: Medical Imaging 1997, 1997, Newport Beach, CA, United States

Abstract

Recent studies suggest that visual evaluation of ultrasound images could decrease negative biopsies of breast cancer diagnosis. However, visual evaluation requires highly experienced breast sonographers. The objective of this study is to develop computerized radiologist assistant to reduce breast biopsies needed for evaluating suspected breast cancer. The approach of this study utilizes a neural network and tissue features extracted from digital sonographic breast images. The features include texture parameters of breast images: characteristics of echoes within and around breast lesions, and geometrical information of breast tumors. Clusters containing only benign lesions in the feature space are then identified by a modified self- organizing map. This newly developed neural network objectively segments population distributions of lesions and accurately establishes benign and equivocal regions.t eh method was applied to high quality breast sonograms of a large number of patients collected with a controlled procedure at Mayo Clinic. The study showed that the number of biopsies in this group of women could be decreased by 40 percent to 59 percent with high confidence and that no malignancies would have been included in the nonbiopsied group. The advantages of this approach are that it is robust, simple, and effective and does not require highly experienced sonographers.

Citation Download Citation

Yi Zheng, James F. Greenleaf, and John J. Gisvold "Reducing breast biopsies by ultrasonographic analysis and a modified self-organizing map", Proc. SPIE 3033, Medical Imaging 1997: Physiology and Function from Multidimensional Images, (9 May 1997); https://doi.org/10.1117/12.274064

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