Development of x-ray detector for multislice CT with 0.5-mm slice thickness and 0.5-second revolution

Miwa Okumura; Masaaki Tamatani; Kenji Igarashi

doi:10.1117/12.465624

3 May 2002 Development of x-ray detector for multislice CT with 0.5-mm slice thickness and 0.5-second revolution

Miwa Okumura, Masaaki Tamatani, Kenji Igarashi

Proceedings Volume 4682, Medical Imaging 2002: Physics of Medical Imaging; (2002) https://doi.org/10.1117/12.465624
Event: Medical Imaging 2002, 2002, San Diego, California, United States

Abstract

The purpose of this study is to develop an x-ray detector system for multislice CTs with 0.5 slice thickness and 0.5- second revolution, and to evaluate clinical advantages. The detector adopts a newly developed ceramic scintillator having a high light-output efficiency as well as a high light-transmittance. By employing high precision machining technology to fabricate the detector, it is not necessary to mask the gap from incident x-ray in the longitudinal direction between neighboring cells. The scintillator properties and the geometry of the detector provide a high x-ray-to-light conversion efficiency, and realize a good low-contrast detectability for CTs. The detector structure allows 0.5 mm slice thickness. The afterglow intensity of the scintaillator is less than 0.1 percent at 3 ms, facilitating 1800 views per second for 0.5-second revolution. This detector improves the performance of CT scanners.

Citation Download Citation

Miwa Okumura, Masaaki Tamatani, and Kenji Igarashi "Development of x-ray detector for multislice CT with 0.5-mm slice thickness and 0.5-second revolution", Proc. SPIE 4682, Medical Imaging 2002: Physics of Medical Imaging, (3 May 2002); https://doi.org/10.1117/12.465624

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