Photon counting pixel architecture for x-ray and gamma-ray imaging applications

Amir H. Goldan; Li Ng; J. A. Rowlands; Karim S. Karim

doi:10.1117/12.710358

19 March 2007 Photon counting pixel architecture for x-ray and gamma-ray imaging applications

Amir H. Goldan, Li Ng, J. A. Rowlands, Karim S. Karim

Proceedings Volume 6510, Medical Imaging 2007: Physics of Medical Imaging; 65103V (2007) https://doi.org/10.1117/12.710358
Event: Medical Imaging, 2007, San Diego, CA, United States

Abstract

Photon counting is emerging as an alternative detection technique to conventional photon integration. In photon counting systems, the value of each image pixel is equal to the number of photons that are absorbed by the radiation detector. The proposed pixel architecture provides a method for energy windowing and serial readout for low-dose gamma-ray imaging. Each pixel is comprised of a radiation detector and integrated analog and digital circuitry. A prototype was developed on a printed circuit board (PCB) using discrete electronic components. In this research, we present the experimental results for the operation of the photon counting pixel with energy windowing and investigate the compromise between pixel noise level and photon count rate.

Citation Download Citation

Amir H. Goldan, Li Ng, J. A. Rowlands, and Karim S. Karim "Photon counting pixel architecture for x-ray and gamma-ray imaging applications", Proc. SPIE 6510, Medical Imaging 2007: Physics of Medical Imaging, 65103V (19 March 2007); https://doi.org/10.1117/12.710358

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