Detection efficiencies of parallel, fan and cone beam collimators for source distributions in an attenuating medium

Benjamin Tsui, D. P. Lewis, J. Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Fan-beam (FB) and cone beam (CB) collimators have been applied in SPECT due to their improved trade-off between spatial resolution and detection efficiency when compared with conventional parallel-hole (PH) collimators. This paper studies the detection efficiencies of these three collimator geometries in more realistic imaging situations. Theoretical formulations are derived for the detection for point and line sources placed in air and inside attenuating media with attenuation effect only. The effects of scatter are investigated using Monte Carlo simulation methods. For primary photons with and without attenuation effect, theoretical predictions agreed with the results from Monte Carlo simulations. The signal-to-noise ratios of the FB and CB are higher than that of the PH collimator and the differences increase with source depth.

Original languageEnglish (US)
Title of host publicationIEEE Nuclear Science Symposium & Medical Imaging Conference
Editors Anon
PublisherIEEE
Pages1145-1149
Number of pages5
Volume3
StatePublished - 1995
Externally publishedYes
EventProceedings of the 1994 Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 4) - Norfolk, VA, USA
Duration: Oct 30 1994Nov 5 1994

Other

OtherProceedings of the 1994 Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 4)
CityNorfolk, VA, USA
Period10/30/9411/5/94

Fingerprint

Fans
Cones
Signal to noise ratio
Photons
Imaging techniques
Geometry
Air
Monte Carlo simulation

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Tsui, B., Lewis, D. P., & Li, J. (1995). Detection efficiencies of parallel, fan and cone beam collimators for source distributions in an attenuating medium. In Anon (Ed.), IEEE Nuclear Science Symposium & Medical Imaging Conference (Vol. 3, pp. 1145-1149). IEEE.

Detection efficiencies of parallel, fan and cone beam collimators for source distributions in an attenuating medium. / Tsui, Benjamin; Lewis, D. P.; Li, J.

IEEE Nuclear Science Symposium & Medical Imaging Conference. ed. / Anon. Vol. 3 IEEE, 1995. p. 1145-1149.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tsui, B, Lewis, DP & Li, J 1995, Detection efficiencies of parallel, fan and cone beam collimators for source distributions in an attenuating medium. in Anon (ed.), IEEE Nuclear Science Symposium & Medical Imaging Conference. vol. 3, IEEE, pp. 1145-1149, Proceedings of the 1994 Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 4), Norfolk, VA, USA, 10/30/94.
Tsui B, Lewis DP, Li J. Detection efficiencies of parallel, fan and cone beam collimators for source distributions in an attenuating medium. In Anon, editor, IEEE Nuclear Science Symposium & Medical Imaging Conference. Vol. 3. IEEE. 1995. p. 1145-1149
Tsui, Benjamin ; Lewis, D. P. ; Li, J. / Detection efficiencies of parallel, fan and cone beam collimators for source distributions in an attenuating medium. IEEE Nuclear Science Symposium & Medical Imaging Conference. editor / Anon. Vol. 3 IEEE, 1995. pp. 1145-1149
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