Presentation Information
[3F10]Development of a fine-pitch large-area silicon detector and application to medical radiation imaging
*Mizuki Uenomachi1, Kanta Nagai2, Hikaru Sekiguchi2, Koki Nakamura2, Setsuo Sato2, Kenji Shimazoe2, Kouichi Hagino2, Ayaki Takeda3, Koji Mori3, Takeshi Tsuru4 (1. Science Tokyo, 2. UTokyo, 3. MoU, 4. Kyoto Univ.)
Keywords:
Silicon pixel detector,SOI sensor,XRPIX,Compton camera,Nuclear medicine
For simultaneous imaging of Positron Emission Tomography (PET) and Single Photon Emission Computed Tomography (SPECT) radionuclides in nuclear medicine, we have been developing a Compton PET hybrid camera that combines a fine-pitch pixel silicon detector, XRPIX as a scatterer, and a GAGG scintillator detector as an absorber. XRPIX is a monolithic pixel silicon detector fabricated using Silicon on Insulator (SOI) technology with a pixel size of 36 µm × 36 µm, allowing only radiation-hit pixels to be read out. In this study, we report on the development of a large-area device, XRPIX11, which improves the energy resolution, pixel-to-pixel gain variation, and count rate compared with XRPIX7 used in the prototype camera, as well as on its application to medical imaging.