Basic detection property of an array-type CdTe detector for BNCT–SPECT – Measurement and analysis of anti-coincidence events. (December 2016)

• Record Type: Journal Article
• Authors: Manabe, Masanobu; Sato, Fuminobu; Murata, Isao
• Is Part Of: Applied radiation and isotopes. Volume 118(2016:Dec.)
• Page Start: 389
• Page End: 394
• Publication Date: 2016-12
• Subjects: BNCT -- CdTe detector -- Gamma-ray -- SPECT -- Anti-coincidence detection -- 10B(n, α)7Li -- 478 keV; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2015.11.003
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: Our research group is now investigating a BNCT–SPECT system with cadmium tellurite (CdTe) detectors, which can obtain a three-dimensional image of the BNCT treatment effect by measuring the 478 keV gamma-rays emitted from an excited state of the 7 Li nucleus generated by the 10 B(n, α) reaction. The BNCT–SPECT system is composed of a collimator and an array-type CdTe detector. In this study, we produced an array detector with two CdTe elements to test the basic detection property for anti-coincidence events. Our investigation confirmed that the detector offers an improved S/N ratio by the anti-coincidence detection. We also proposed an estimation method using the MCNP5 to analyze coincidence events in the detector. Highlights: We are investigating a BNCT-SPECT system. The BNCT-SPECT system is composed of a collimator and multiple gamma-ray detectors. We produced a two-element CdTe detector to confirm coincidence events. It was confirmed the S/N ratio could be improved by an anti-coincidence detection.