Modeling alignment criteria of collimator to scintillation detector

Aziz Ikhlef

doi:10.1117/12.524044

6 May 2004 Modeling alignment criteria of collimator to scintillation detector

Aziz Ikhlef

Proceedings Volume 5368, Medical Imaging 2004: Physics of Medical Imaging; (2004) https://doi.org/10.1117/12.524044
Event: Medical Imaging 2004, 2004, San Diego, California, United States

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.

Citation Download Citation

Aziz Ikhlef "Modeling alignment criteria of collimator to scintillation detector", Proc. SPIE 5368, Medical Imaging 2004: Physics of Medical Imaging, (6 May 2004); https://doi.org/10.1117/12.524044

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