High performance detector head for PET and PET/MR with continuous crystals and SiPMs

[EN] A high resolution PET detector head for small animal PET applications has been developed. The detector is composed of a 12 mm x 12 mm continuous LYSO crystal coupled to a 64-channel monolithic SiPM matrix from FBK-irst. Crystal thicknesses of 5 mm and 10 mm have been tested, both yielding an in...

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Bibliographic Details
Authors: Llosá, G., Barrillon, P., Bisogni, M. G., Cabello, J., Del Guerra, A., Etxebeste, A., Gillam, J.E., Lacasta, C., Rafecas, M., Solaz, C., Stankova, V., de la Taille, C., Barrio-Toala, John|||0000-0001-5181-2146, Oliver-Guillén, José Francisco|||0000-0002-8585-9345
Format: article
Publication Date:2013
Country:España
Institution:Universitat Politècnica de València (UPV)
Repository:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Language:English
OAI Identifier:oai:riunet.upv.es:10251/232871
Online Access:https://riunet.upv.es/handle/10251/232871
Access Level:Open access
Keyword:Monolithic crystals
SiPM
MG-APD
PET
High resolution
Position determination
Description
Summary:[EN] A high resolution PET detector head for small animal PET applications has been developed. The detector is composed of a 12 mm x 12 mm continuous LYSO crystal coupled to a 64-channel monolithic SiPM matrix from FBK-irst. Crystal thicknesses of 5 mm and 10 mm have been tested, both yielding an intrinsic spatial resolution around 0.7 mm FWHM with a position determination algorithm that can also provide depth-of-interaction information. The detectors have been tested in a rotating system that makes it possible to acquire tomographic data and reconstruct images of Na-22 sources. An image reconstruction method specifically adapted for continuous crystals has been employed. The Full Width at Half Maximum measured from a point source reconstructed with ML-EM was 0.7 mm with the 5 mm crystal and 0.8 mm with the 10 mm crystal.

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