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Development of Digital Steroscopic Imaging Technique in Mammography

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Annual rept. 20 Apr 1999-19 Apr 2000

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The goal of this research is to develop stereoscopic techniques for mammographic imaging and to investigate the feasibility of using stereomammography to improve the sensitivity of mammography for breast cancer detection, especially in dense breasts. During this year, we have assembled a high-resolution stereoscopic viewing station and developed software for displaying and manipulating stereoscopic images. This viewing station facilitates our studies of various image acquisition and display techniques for stereoscopic imaging. Various 3D virtual cursor shapes were studied and two were chosen for an observer study to evaluate their effects on depth measurement. An observer study was also performed to study the effects of imaging techniques x-ray dose and stereo- angles on depth perception. The results of these experiments indicate that the 3D virtual cursors can provide absolute measurement of lesion in particular, fibril size and depth in the breast. The accuracy of the measurements depends on matching of the object shape and cursor shape. It was also found that depth perception depends on the quality of the stereo-images. This information is important for designing optimal imaging techniques to generate stereomammograms and for designing proper 3D virtual cursors to quantify lesion size and depth in stereomammograms. The improvement in perception of the details of mammographic features and the additional size and depth information are expected to improve diagnostic accuracy of mammographic abnormalities.

Subject Categories:

  • Anatomy and Physiology
  • Medicine and Medical Research
  • Computer Programming and Software

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