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7 April 2023 Impact of pulse pileup on single- and multi-energy images from a clinical photon counting detector CT
Joshua R Chen, Timothy Winfree, Michael Bruesewitz, Joseph Swicklik, Jamison Thorne, Shuai Leng, Cynthia McCollough
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Proceedings Volume 12463, Medical Imaging 2023: Physics of Medical Imaging; 124630B (2023) https://doi.org/10.1117/12.2654222
Event: SPIE Medical Imaging, 2023, San Diego, California, United States
Abstract
Our aim was to quantify the effects of pulse pileup on single- and multi-energy CT images from a commercial PCD-CT. A multi-energy CT phantom with 10 inserts was scanned at tube currents across the entire available range. Mean CT numbers were recorded and the CT number and noise ratios between low and high bin images were calculated. Results demonstrated that pulse pileup does not create noticeable artifacts or cause major CT number deviations with the variation in CT numbers being less than 10 HU for all images evaluated, indicating minimal impact on single- and multi-energy performance in current clinical PCD-CT.
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Joshua R Chen, Timothy Winfree, Michael Bruesewitz, Joseph Swicklik, Jamison Thorne, Shuai Leng, and Cynthia McCollough "Impact of pulse pileup on single- and multi-energy images from a clinical photon counting detector CT", Proc. SPIE 12463, Medical Imaging 2023: Physics of Medical Imaging, 124630B (7 April 2023); https://doi.org/10.1117/12.2654222
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KEYWORDS
Computed tomography
Sensors
Photon counting
Iodine
Reconstruction algorithms
Photodetectors
Solids
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