Yasuhiro Iwamoto

TL;DR: In this article, the authors present the current status and most recent progress of MPPC-based scintillation detectors, such as a high-precision X-ray and gamma-ray spectral image sensor, next-generation PET detectors with MRI, TOF, and DOI measurement capabilities, and a compact gamma camera for environmental radiation surveys.

TL;DR: In this article, the distribution of 137Cs in regions with a diameter of several tens to a hundred meters can be imaged with a typical resolution of 2-5 m within a 10-20 min flights duration.

TL;DR: In this article, a small animal molecular imaging system was constructed using the Compton camera, which shows gamma-ray distribution utilizing the kinematics of Compton scattering, is a promising detector capable of imaging across a wide range of energy.

TL;DR: The imaging of gamma rays generated by the nuclear interactions during proton irradiation, using a handheld Compton camera based on scintillation detectors, shows that prompt gamma rays sufficiently trace the Bragg peak from these results because of the uncertainty given by the spatial resolution of the Compton camera.

TL;DR: In this paper, the authors proposed two methods of obtaining depth information of radioactive isotopes embedded in materials by comparing (1) their spectra and (2) images of incident gamma rays scattered by the materials and direct gamma rays.