Performance and quality control of Clear-PEM detector modules Export

@article{citeulike:2889806, abstract = {Clear-PEM is a dedicated PET scanner for breast and axilla cancer diagnosis, under development within the framework of the Crystal Clear Collaboration at CERN, aiming at the detection of tumors down to 2 mm in diameter. The camera consists of two planar detector heads with active dimensions 16.0×14.5 cm2. Each head has 96 Clear-PEM detector modules consisting of 32 LYSO:Ce pixels with dimensions 2×2×20 mm3 packed in a 4×8 BaSO4 reflector matrix compressed between two Hamamatsu S8550 APD arrays in a double-readout configuration for Depth-of-Interaction (DoI) determination. The modules are individually measured and characterized before being grouped into Supermodules (comprised of 24 modules). Measured properties include photo-peak position, relative gain dispersion, energy resolution, cross-talk and DoI resolution. Optical inspection of matrices was also performed with the aid of a microscope, to search for pixel misalignments and matrix defects. Modules' performance was thoroughly evaluated with a 511 keV collimated beam to exactly determine DoI resolution. In addition, a fast quality control (QC) procedure using flood irradiations from a 137Cs source was applied systematically. The overall performance of the 24 detector modules complies with the design goals of the Clear-PEM detector, showing energy resolution around 15\%, DoI resolution of about 2 mm and gain dispersion among pixels of 15\%.}, author = {Amaral, Pedro and Carri\c{c}o, Bruno and Ferreira, Miguel and Moura, Rui and Ortig\~{a}o, Catarina and Rodrigues, Pedro and Da Silva, Jos\'{e} C. and Trindade, Andreia and Varela, Jo\~{a}o}, booktitle = {Imaging 2006 - Proceedings of the 3rd International Conference on Imaging Techniques in Subatomic Physics, Astrophysics, Medicine, Biology and Industry}, citeulike-article-id = {2889806}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/j.nima.2007.06.071}, citeulike-linkout-1 = {http://www.sciencedirect.com/science/article/B6TJM-4P2YWGF-8/1/8bbf108c4fcc77a916039e4674804d13}, day = {1}, doi = {10.1016/j.nima.2007.06.071}, journal = {Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment}, keywords = {characterization, clearpem, control, detector, measurement, module, modules, performance, quality}, month = {October}, number = {2}, pages = {1123--1126}, posted-at = {2008-06-12 18:41:54}, priority = {2}, title = {Performance and quality control of Clear-PEM detector modules}, url = {http://dx.doi.org/10.1016/j.nima.2007.06.071}, volume = {580}, year = {2007} }

TY - JOUR ID - citeulike:2889806 L3 - citeulike-article-id:2889806 N2 - Clear-PEM is a dedicated PET scanner for breast and axilla cancer diagnosis, under development within the framework of the Crystal Clear Collaboration at CERN, aiming at the detection of tumors down to 2 mm in diameter. The camera consists of two planar detector heads with active dimensions 16.0×14.5 cm2. Each head has 96 Clear-PEM detector modules consisting of 32 LYSO:Ce pixels with dimensions 2×2×20 mm3 packed in a 4×8 BaSO4 reflector matrix compressed between two Hamamatsu S8550 APD arrays in a double-readout configuration for Depth-of-Interaction (DoI) determination. The modules are individually measured and characterized before being grouped into Supermodules (comprised of 24 modules). Measured properties include photo-peak position, relative gain dispersion, energy resolution, cross-talk and DoI resolution. Optical inspection of matrices was also performed with the aid of a microscope, to search for pixel misalignments and matrix defects. Modules' performance was thoroughly evaluated with a 511 keV collimated beam to exactly determine DoI resolution. In addition, a fast quality control (QC) procedure using flood irradiations from a 137Cs source was applied systematically. The overall performance of the 24 detector modules complies with the design goals of the Clear-PEM detector, showing energy resolution around 15%, DoI resolution of about 2 mm and gain dispersion among pixels of 15%. IS - 2 JF - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment EP - 1126 TI - Performance and quality control of Clear-PEM detector modules VL - 580 T2 - Imaging 2006 - Proceedings of the 3rd International Conference on Imaging Techniques in Subatomic Physics, Astrophysics, Medicine, Biology and Industry SP - 1123 KW - characterization KW - clearpem KW - control KW - detector KW - measurement KW - module KW - modules KW - performance KW - quality AU - Amaral, Pedro AU - Carriço, Bruno AU - Ferreira, Miguel AU - Moura, Rui AU - Ortigão, Catarina AU - Rodrigues, Pedro AU - Da Silva, José AU - Trindade, Andreia AU - Varela, João PY - 2007/10/01/ UR - http://dx.doi.org/10.1016/j.nima.2007.06.071 ER -