Translator Disclaimer
29 July 1993 Glandular tissue contrast in CCD-digitized mammograms
Author Affiliations +
Proceedings Volume 1905, Biomedical Image Processing and Biomedical Visualization; (1993)
Event: IS&T/SPIE's Symposium on Electronic Imaging: Science and Technology, 1993, San Jose, CA, United States
Contrast resolution in CCD digitized mammograms is difficult because of storage requirements for 12 bit gray level resolution and because of the logarithmic amplification needed for optical densities above 1.6. By assigning gray level ranges to specific optical density ranges based on a region of interest selection during a pre-digitization scan, contrast for lower optical densities can be preserved. Comparison of the equivalence of film and digital images was confirmed by 6 radiologists reading 46 biopsy proven films (12 cases). Diagnostic performance was also tested and showed similar error rates (17%) for both modalities.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Carolyn Kimme-Smith, Siamik Dardashti, and Lawrence W. Bassett M.D. "Glandular tissue contrast in CCD-digitized mammograms", Proc. SPIE 1905, Biomedical Image Processing and Biomedical Visualization, (29 July 1993);

Back to Top