1. Double-Photon Emission Imaging With High-Resolution Si/CdTe Compton Cameras.
- Author
-
Orita, Tadashi, Yabu, Goro, Yoneda, Hiroki, Takeda, Shin'Ichiro, Caradonna, Pietro, Takahashi, Tadayuki, Watanabe, Shin, Uchida, Yuusuke, Moriyama, Fumiki, Sugawara, Hirotaka, Uenomachi, Mizuki, and Shimazoe, Kenji
- Subjects
COMPTON imaging ,IMAGING systems ,SPATIAL resolution ,RADIOACTIVE tracers ,NUCLEAR medicine ,SEMICONDUCTOR detectors ,CADMIUM telluride - Abstract
Application of Compton cameras to nuclear medicine or small animal imaging is a challenging subject. A major issue is insufficient spatial resolutions of the existing Compton camera systems. We developed an imaging system consisting of two Si/CdTe Compton cameras, which allows us to investigate $\gamma $ – $\gamma $ coincidence imaging for a variety of radioisotopes, including 111In, which emits double photons of 171 and 245 keV per decay and has been used for a long time in nuclear medicine and many commercialized radiotracers. We demonstrated with it a drastic reduction of a tail of the point spread function, compared with that of the traditional method, and obtained a spatial resolution of 4.5 mm full-width at half-maximum (FWHM) at 41.35 mm. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF