Optimal x-ray imaging geometry for flat-panel cone-beam computed tomography

Jeff Siewerdsen, D. A. Jaffray

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

Abstract

A theoretical method for identifying optimal x-ray imaging geometry is presented and applied to cone-beam CT (CBCT) using a flat-panel imager (FPI). The method includes the effects of x-ray source distribution, imaging task, x-ray scatter, and detective quantum efficiency (DQE) on the ICRU-recommended figure of merit for image quality -detectability index. Cascaded systems analysis for FPIs is extended to incorporate the effects of x-ray scatter directly into the DQE. For the FPI-CBCT prototype being implemented for image-guided radiotherapy of the prostate, optimal magnification is ∼1.4-1.6, depending primarily on the magnitude of the x-ray scatter fraction.

Original languageEnglish (US)
Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
EditorsJ.D. Enderle
Pages106-107
Number of pages2
Volume1
StatePublished - 2000
Externally publishedYes
Event22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Chicago, IL, United States
Duration: Jul 23 2000Jul 28 2000

Other

Other22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CountryUnited States
CityChicago, IL
Period7/23/007/28/00

Fingerprint

Tomography
Cones
Imaging techniques
X rays
Geometry
Quantum efficiency
Image sensors
Radiotherapy
Image quality
Systems analysis

ASJC Scopus subject areas

  • Bioengineering

Cite this

Siewerdsen, J., & Jaffray, D. A. (2000). Optimal x-ray imaging geometry for flat-panel cone-beam computed tomography. In J. D. Enderle (Ed.), Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (Vol. 1, pp. 106-107)

Optimal x-ray imaging geometry for flat-panel cone-beam computed tomography. / Siewerdsen, Jeff; Jaffray, D. A.

Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. ed. / J.D. Enderle. Vol. 1 2000. p. 106-107.

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

Siewerdsen, J & Jaffray, DA 2000, Optimal x-ray imaging geometry for flat-panel cone-beam computed tomography. in JD Enderle (ed.), Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. vol. 1, pp. 106-107, 22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Chicago, IL, United States, 7/23/00.
Siewerdsen J, Jaffray DA. Optimal x-ray imaging geometry for flat-panel cone-beam computed tomography. In Enderle JD, editor, Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 1. 2000. p. 106-107
Siewerdsen, Jeff ; Jaffray, D. A. / Optimal x-ray imaging geometry for flat-panel cone-beam computed tomography. Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. editor / J.D. Enderle. Vol. 1 2000. pp. 106-107
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