A new generation of scintillation detectors with identification of events undergoing multiple interactions for gamma-ray imaging and spectroscopy

Luca Indovina; Raffaele Scafè; Marco Puccini; Rosanna Pellegrini; Roberto Pani

doi:10.1016/j.apradiso.2022.110189

A new generation of scintillation detectors with identification of events undergoing multiple interactions for gamma-ray imaging and spectroscopy

Appl Radiat Isot. 2022 Jun:184:110189. doi: 10.1016/j.apradiso.2022.110189. Epub 2022 Mar 9.

Authors

Luca Indovina¹, Raffaele Scafè², Marco Puccini³, Rosanna Pellegrini⁴, Roberto Pani⁵

Affiliations

¹ Department of Diagnostic Imaging, Oncological Radiotherapy and Hematology, Fondazione Policlinico Universitario Agostino Gemelli - IRCCS, Università Cattolica del Sacro Cuore, Largo Agostino Gemelli 8, 00168, Rome, Italy.
² Independent Researcher, c/o Prof. Roberto Pani, P.le Aldo Moro 5, 00185 Rome, italy. Electronic address: [email protected].
³ ENEA - Italian National Agency for New Technologies, Energy and Sustainable Economic Development, TERIN-ICT, Lungotevere Thaon di Revel, 76, 00196, Rome, Italy.
⁴ Dept. of Molecular Medicine, Sapienza University of Rome, P.le Aldo Moro 5, 00185, Rome, Italy.
⁵ Dept. of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185, Rome, Italy.

PMID: 35303630
DOI: 10.1016/j.apradiso.2022.110189

Abstract

The present work deals with a scintillation detector made of a LuYAP:Ce array coupled to a position-sensitive photo-multiplier tube, whose structure is well suitable for SPECT and PET, but also in nuclear physics, astrophysics, astroparticle physics, homeland security, and non-proliferation. The response was investigated under Co-57, Ba-133, Cs-137 gamma-ray irradiation, and with Lu-176 self-activity. The investigation, based on the 2-D charge-profiles spread, provides means for identifying and rejecting multiple-interactions in the crystal-array, like Lu X-ray escape photons, and Compton-scattered ones.

Keywords: 2-D charge-distribution spreads; Gamma-ray detector; Inter-crystal scatter; PET; SPECT; X-ray escape.

Publication types

Review

MeSH terms

Cesium Radioisotopes*
Lutetium* / chemistry
Monte Carlo Method
Photons
Positron-Emission Tomography / methods
Radioisotopes
Spectrum Analysis

Substances

Cesium Radioisotopes
Lutetium-176
Radioisotopes
Cesium-137
Lutetium