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Automatic Evaluation of Mammographic Adequacy and Quality on the Mediolateral Oblique View

  • Ramachandran Chandrasekhar
  • Man Kwok Sze
  • Yianni Attikiouzel

Abstract

A digitized mammogram is considered to be adequate and of sufficient quality when its extent and appearance, respectively, satisfy certain criteria that enable radiologists to make diagnoses of high specificity and sensitivity. Criteria related to breast positioning, suggested by radiologists, include: inferior extent of the pectoral muscle relative to the level of the nipple; curvature of the anterior pectoral margin; whether the nipple is in profile; and inclusion of all the breast tissue on the mammogram. We present here a systematic approach to automatically determine by computer the adequacy and quality of mammograms. First, landmarks such as the breast border, nipple, and pectoral margin were extracted by automatic algorithms. Compliance with the positioning criteria was then determined from these landmarks. Finally, adequacy of film exposure was assessed from the optical density histogram of the breast region. This approach has been applied to mammograms in the MIAS database. Automatic, computerized evaluation of mammographie adequacy and quality by computer is useful to highlight poor positioning and inadequate exposure, and to alert mammographic radiographers (technicians) to the need for additional exposures or views. It is also an important quality assurance step in any automated analysis of mammo¬grams for computer-assisted diagnosis.

Keywords

Digital Mammography Pectoral Muscle Breast Region Border Segment Clinical Image Quality 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Ramachandran Chandrasekhar
    • 1
  • Man Kwok Sze
    • 1
  • Yianni Attikiouzel
    • 2
  1. 1.Australian Research Centre for Medical Engineering (ARCME)The University of Western AustraliaCrawleyAustralia
  2. 2.Murdoch UniversityMurdochAustralia

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