X????????????????????裨PCCT???????????????????????????????????????????????????PCCT????????????????????X?????????????????????????????????????????????????????????????????п????????????????????????????????????????????????????????????????????????????????

????????????????????????????????The University of Tokyo?????о?????????С??????籶?????SiPM?????к??????????????????????????????X????????????????????????250 µm??????δ??????PCCT????????????????????????122 keV????27%??????????????????????????????296 µm????????????????????????????о??????“An energy-resolving photon-counting X-ray detector for computed tomography combining silicon-photomultiplier arrays and scintillation crystals”???????Communications Engineering??????

???????о??У??о???????????????????????250 µm SPAD???У?SiPM????250 µm??????????壬?????????????????????о??????????????GAGG??gadolinium aluminum gallium garnet??/GFAG??gadolinium fine aluminum gallate???????15 µm/20 µm????SiPM?????????ò??????????????????????FWHM???????????????????о????????????????GFAG + 15 µm??????????

??????籶?????SiPM?????к???????????????????????????

?о???????????????250 µm GFAG??15 µm????SiPM????????10 ×  10??????????????PCD?????У???????????????????????????У?GFAG/15 µm??????Χ??????????????????е??????????????????122??79??14 keV??????????????????27%??27.5%??48.6%??

?????о???????????????????????????

???????????????????λ?÷??????????о???????????LP??????????б???????X????????????????????????????????????????FWHM??????????????251 µm??283 µm???????????????????????????????MTF????10%????????????????296 µm??334 µm??

????LP????????б????????п??????????

?????????о??????????????μ?????SiPM????????????????????????????????????????250 µm????????????????????????????????????????????????????????????????????????????????????????< 20%??< 30%??????????????δ????PCCT???????PCD??????????????????屻50 µm????????????????????????????緽?????????36%??????????????????????????????????????????С???????????????????????????????????????????????????????PCD?????????????????????????????????????????????????????

???????о??У???ü????????????????????·??????????????δ??????????????й?????TSV????????????ü????·??ASIC?????????????PCCT???????????????顣???????????CT???????????????????????

?????????https://www.nature.com/articles/s44172-024-00313-1

?????????

??????????????????SPAD?????????????????-2023?桷

??????????????????SPAD???????????-2023?桷??