Low dose x-ray imaging by photon counting detector (Conference Presentation)

Toru Aoki; Kosuke Kimura; Hisashi Morii; Toshiyuki Takagi; Katsuyuki Takagi; Tsuyoshi Terao; Takaharu Okunoyama; Akifumi Koike

doi:10.1117/12.2316418

14 May 2018 Low dose x-ray imaging by photon counting detector (Conference Presentation)

Toru Aoki, Kosuke Kimura, Hisashi Morii, Toshiyuki Takagi, Katsuyuki Takagi, Tsuyoshi Terao, Takaharu Okunoyama, Akifumi Koike

Author Affiliations +

Proceedings Volume 10656, Image Sensing Technologies: Materials, Devices, Systems, and Applications V; 106560Y (2018) https://doi.org/10.1117/12.2316418
Event: SPIE Commercial + Scientific Sensing and Imaging, 2018, Orlando, FL, United States

Abstract

Recently, the photon counting X-ray imaging / CT systems have been researched and investigated as a next generation imaging system. CdTe has high attenuation coefficient at hard X-ray (100keV<) for medical imaging system, and photon counting signal processing has very high sensitivity in theoretic. We have demonstrated the photon counting X-ray imaging / CT system by CdTe detectors. The high-contrasted CT images of acryl phantom were taken by this system. In this case, very low power X-ray source (150kV, 1.8uA) was used. CT images could not be reconstructed at low exposure condition less than 9.0uAs in this protocol using traditional CdTe detector, but we could obtain good images by using photon counting CdTe detector even if the very low exposure of 1.8uAs. Photon-counting CT is very powerful technique for low exposure X-ray imaging / CT system.

Conference Presentation

Citation Download Citation

Toru Aoki, Kosuke Kimura, Hisashi Morii, Toshiyuki Takagi, Katsuyuki Takagi, Tsuyoshi Terao, Takaharu Okunoyama, and Akifumi Koike "Low dose x-ray imaging by photon counting detector (Conference Presentation)", Proc. SPIE 10656, Image Sensing Technologies: Materials, Devices, Systems, and Applications V, 106560Y (14 May 2018); https://doi.org/10.1117/12.2316418

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