Zero-dark-counting Mcps-range X-ray detectors and their applications to high-image-quality preclinical energy-dispersive CT

2016 Fiscal Year Final Research Report

• Project/Area Number: 26461804
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Radiation science
• Research Institution: Iwate Medical University
• Principal Investigator: Sato Eiichi 岩手医科大学, 教養教育センター, 教授 (90154038)
• Co-Investigator(Renkei-kenkyūsha): ODA Yasuyuki 岩手医科大学, 教養教育センター, 助教 (50583671) ; SAGAE Michiaki 岩手医科大学, 教養教育センター, 助教 (30235197)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: CdTe検出器 / YAP(Ce)-MPPC検出器 / LSO-MPPC検出器 / フォトンカウンティングX線CT / エネルギー弁別CT / デュアルエネルギーカウンター / クアッドエネルギーカウンター / スペクトラルX線CT

Outline of Final Research Achievements

We performed fundamental experiments concerning zero-dark-counting Mcps-range X-ray photon detectors of LSO-MPPC and YAP(Ce)-MPPC. In these experiments, the count rate was increased, and the special resolutions were improved. Next, we developed a dual-energy (DE) photon counter to select two different energy ranges, and K-edge CT using iodine (I) and gadolinium (Gd) media was performed. The quad-energy (QE) counter was developed to perform QE-CT, and four different energy tomograms were obtained simultaneously. Finally, high-spatial-resolution DE-CT was accomplished using a CdTe-array detector with a spatial resolution of 0.1 mm, and high-spatial-resolution I-K-edge CT was performed.

Free Research Field

X線画像工学