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Reduction of false positives in the screening CAD tool for microcalcification detection

Abstract

Breast cancer is one of the leading causes of cancer deaths among women worldwide. Early diagnosis of breast cancer can help in reducing the mortality rate. The major challenge in the early diagnosis of breast cancer is the fewer number of radiologists available per million population in developing countries. The total number of radiologists is less than 30 in many third world countries. Since majority of the screening mammograms are normal or do not show any cancer signs, there is need of a screening computer-aided diagnosis (CAD) tool that can detect normal mammograms correctly and thereby reduce the burden on radiologists. Thus, a screening CAD is developed that is able to detect microcalcification clusters in mammogram with 100% sensitivity on the subset of DDSM, INbreast and PGIMER-IITKGP databases at lower false positives as compared with state of the art methods. The synthetic minority over-sampling technique and the majority class under-sampling based on data distribution are used to improve the classifiers performance by reducing the false positives. An approach based on principal component analysis is proposed to further reduce the false positives by removing the vascular calcifications that are not of any clinical significance and may increase the false positives.

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Correspondence to Sudipta Mukhopadhyay.

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Karale, V.A., Singh, T., Sadhu, A. et al. Reduction of false positives in the screening CAD tool for microcalcification detection. Sādhanā 45, 44 (2020). https://doi.org/10.1007/s12046-019-1260-4

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Keywords

  • 2D-NEO
  • nonlinear energy operator
  • HOG
  • CAD
  • breast cancer
  • microcalcifications