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Proceedings Paper

Modeling alignment criteria of collimator to scintillation detector
Author(s): Aziz Ikhlef
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Paper Abstract

In this paper, we present a simulation methodology that allows computed tomography (CT) detector designer to assess the criteria and tolerance requirements of positioning and alignment of x-ray collimators to scintillation detector arrays. Based on x-ray and optical transport simulation, we have developed an analytical model to predict the response of the measurement chain (collimator-scintillator-photodiode) in CT detector. We present the resulting effects of misalignments of the collimator array to detector array in the imaging chain through the simulation of beam hardening (water equivalent material and/or Bone) and light output using 120 kVp bremsstrahlung x-ray spectrum from a tungsten target anode source.

Paper Details

Date Published: 6 May 2004
PDF: 9 pages
Proc. SPIE 5368, Medical Imaging 2004: Physics of Medical Imaging, (6 May 2004); doi: 10.1117/12.524044
Show Author Affiliations
Aziz Ikhlef, GE Medical Systems (United States)


Published in SPIE Proceedings Vol. 5368:
Medical Imaging 2004: Physics of Medical Imaging
Martin J. Yaffe; Michael J. Flynn, Editor(s)

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