Direct cone beam SPECT reconstruction with camera tilt

J. Li, R. J. Jaszczak, K. L. Greer, R. E. Coleman, Z. J. Cao, Benjamin Tsui

Research output: Contribution to journalArticle

Abstract

A filtered backprojection (FBP) algorithm is derived to perform cone beam (CB) single-photon emission computed tomography (SPECT) reconstruction with camera tilt using circular orbits. This algorithm reconstructs the tilted angle CB projection data directly by incorporating the tilt angle into it. When the tilt angle becomes zero, this algorithm reduces to that of Feldkamp. Experimentally acquired phantom studies using both a two-point source and the three-dimensional Hoffman brain phantom have been performed. The transaxial tilted cone beam brain images and profiles obtained using the new algorithm are compared with those without camera tilt. For those slices which have approximately the same distance from the director in both tilt and non-tilt set-ups, the two transaxial reconstructions have similar profiles. The two-point source images reconstructed from this new algorithm and the tilted cone beam brain images are also compared with those reconstructed from the existing tilted cone beam algorithm which requires rebinning the projection data.

Original languageEnglish (US)
Article number003
Pages (from-to)241-258
Number of pages18
JournalPhysics in Medicine and Biology
Volume38
Issue number2
DOIs
StatePublished - 1993
Externally publishedYes

Fingerprint

Single photon emission computed tomography
Single-Photon Emission-Computed Tomography
Cones
cones
tomography
Cameras
cameras
photons
brain
Brain
point sources
projection
circular orbits
Orbit
profiles
Orbits

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Physics and Astronomy (miscellaneous)
  • Biomedical Engineering

Cite this

Li, J., Jaszczak, R. J., Greer, K. L., Coleman, R. E., Cao, Z. J., & Tsui, B. (1993). Direct cone beam SPECT reconstruction with camera tilt. Physics in Medicine and Biology, 38(2), 241-258. [003]. https://doi.org/10.1088/0031-9155/38/2/003

Direct cone beam SPECT reconstruction with camera tilt. / Li, J.; Jaszczak, R. J.; Greer, K. L.; Coleman, R. E.; Cao, Z. J.; Tsui, Benjamin.

In: Physics in Medicine and Biology, Vol. 38, No. 2, 003, 1993, p. 241-258.

Research output: Contribution to journalArticle

Li, J, Jaszczak, RJ, Greer, KL, Coleman, RE, Cao, ZJ & Tsui, B 1993, 'Direct cone beam SPECT reconstruction with camera tilt', Physics in Medicine and Biology, vol. 38, no. 2, 003, pp. 241-258. https://doi.org/10.1088/0031-9155/38/2/003
Li, J. ; Jaszczak, R. J. ; Greer, K. L. ; Coleman, R. E. ; Cao, Z. J. ; Tsui, Benjamin. / Direct cone beam SPECT reconstruction with camera tilt. In: Physics in Medicine and Biology. 1993 ; Vol. 38, No. 2. pp. 241-258.
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