13 March 2009 Effect of detector time delay and its correction in multiple source computed tomography
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Proceedings Volume 7258, Medical Imaging 2009: Physics of Medical Imaging; 72582C (2009) https://doi.org/10.1117/12.811869
Event: SPIE Medical Imaging, 2009, Lake Buena Vista (Orlando Area), Florida, United States
Abstract
In scintillating detectors x-rays are converted to luminescent photons with a time delay. The corresponding time resolution of the detector can have - in contrast to usual multi-slice CT - a deteriorating effect in new CT concepts with multiple sources illuminating one detector, because x-ray intensities measured here in consecutive projections correspond to the absorption along paths through very different regions of the object. A new analytical description of these effects is presented and a correction algorithm is derived. It is also shown that the detector time delay and its correction can lead to a noticeable increase of image noise.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. Thran, A. Thran, P. Forthmann, P. Forthmann, R. Proksa, R. Proksa, } "Effect of detector time delay and its correction in multiple source computed tomography", Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 72582C (13 March 2009); doi: 10.1117/12.811869; https://doi.org/10.1117/12.811869
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