TY - GEN
T1 - Screen optics effects on DQE in digital radiography
T2 - Medical Imaging 2008 - Physics of Medical Imaging
AU - Lubinsky, A. R.
AU - Zhao, Wei
AU - Suzuki, Katsuhiko
PY - 2008
Y1 - 2008
N2 - The effect of screen optics on the spatial-frequency-dependent DQE of digital radiographic systems, expressed as the Lubberts factor L(f), is studied for both isotropic granular and structured columnar (CsI) x-ray screens. Analytical models for L(f) are derived from diffusion theory for isotropic screens, and optical ray tracing methods are also used to obtain depth-dependent line spread functions, MTF's, and Lubberts factors for both isotropic and columnar screens. The theoretical methods are used to investigate the dependence of L(f) on backing reflectance, thickness, x-ray absorption coefficient, and screen type. An experimental method to estimate L(J), in which an electron multiplying charge coupled device (EMCCD) is used to image individual x-ray bursts, is described. Preliminary results are obtained from data on sample screens, and are compared with the theory.
AB - The effect of screen optics on the spatial-frequency-dependent DQE of digital radiographic systems, expressed as the Lubberts factor L(f), is studied for both isotropic granular and structured columnar (CsI) x-ray screens. Analytical models for L(f) are derived from diffusion theory for isotropic screens, and optical ray tracing methods are also used to obtain depth-dependent line spread functions, MTF's, and Lubberts factors for both isotropic and columnar screens. The theoretical methods are used to investigate the dependence of L(f) on backing reflectance, thickness, x-ray absorption coefficient, and screen type. An experimental method to estimate L(J), in which an electron multiplying charge coupled device (EMCCD) is used to image individual x-ray bursts, is described. Preliminary results are obtained from data on sample screens, and are compared with the theory.
UR - https://www.scopus.com/pages/publications/43149121369
U2 - 10.1117/12.772973
DO - 10.1117/12.772973
M3 - Conference contribution
AN - SCOPUS:43149121369
SN - 9780819470973
T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE
BT - Medical Imaging 2008 - Physics of Medical Imaging
Y2 - 18 February 2008 through 21 February 2008
ER -