Theoretical studies on optimization of tomographic performance of cone-beam collimator for SPECT scintimammography

R. B. Salgado, A. Krol, D. H. Feiglin, K. R. Gangal, A. S. Hardikar, F. D. Thomas, E. D. Lipson, A. Bordikar, I. L. Coman

Research output: Contribution to conferencePaper

Abstract

The major component limiting SPECT performance is the gamma camera collimator. Typical parallel-hole collimator has low sensitivity yielding noisy tomographic projection images for clinically useful imaging times and radiation dose to the patients. The problem of high noise and low count density is especially acute in scintimammography due to relatively low uptake in the breast tissue, as compared to the heart and the liver. A practical solution for improved SPECT camera performance in scintimammography might be application of cone-beam collimator (CBC). It offers increased sensitivity in a limited field-of-view (FOV). Disadvantages of CBC include limited and spatially variable FOV, generation of truncation artifacts outside FOV, and more difficult truly 3D reconstruction. In this paper, we investigate some theoretical aspects of optimization of CBC for applications in SPECT scintimammography.

Original languageEnglish (US)
Pages1810-1813
Number of pages4
StatePublished - Dec 1 2002
Event2002 IEEE Nuclear Science Symposium Conference Record - Norfolk, VA, United States
Duration: Nov 10 2002Nov 16 2002

Other

Other2002 IEEE Nuclear Science Symposium Conference Record
CountryUnited States
CityNorfolk, VA
Period11/10/0211/16/02

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Industrial and Manufacturing Engineering

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    Salgado, R. B., Krol, A., Feiglin, D. H., Gangal, K. R., Hardikar, A. S., Thomas, F. D., Lipson, E. D., Bordikar, A., & Coman, I. L. (2002). Theoretical studies on optimization of tomographic performance of cone-beam collimator for SPECT scintimammography. 1810-1813. Paper presented at 2002 IEEE Nuclear Science Symposium Conference Record, Norfolk, VA, United States.