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Journal of Biomedical Engineering ; (6): 360-362, 2005.
Artigo em Chinês | WPRIM | ID: wpr-354299

RESUMO

In order to preprocess mammograms for diagnosing the early cases of breast cancer and improving the computational efficiency in the computer-aided detection of micro-calcifications in mammograms, we have advanced a novel processing technique for the extraction of micro-calcification region of interest (MROI). The proposed method is based on a three-step procedure: (1) the mammogram is divided into sub-images of the same size; (2) the wavelet multi-resolution method is conducted on the sub-images, and the parameters related to wavelet transform and threshold T are discussed according to rho; (3) the classification of sub-images is determined by T. It is tested with 20 mammograms and the results show that the method can achieve a true positive rate as high as 89.7% with a false positive rate as low as 2.1%.


Assuntos
Humanos , Doenças Mamárias , Diagnóstico por Imagem , Patologia , Neoplasias da Mama , Diagnóstico por Imagem , Patologia , Calcinose , Diagnóstico por Imagem , Diagnóstico por Computador , Mamografia
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