Browse > Article
http://dx.doi.org/10.7742/jksr.2022.16.2.151

Digital Position Measurement with MLPE of PET detector using a Small Number of Photosensors  

Kang, Seunghun (Department of Convergence Radiological Science, Dongseo University)
Lee, Seung-Jae (Department of Convergence Radiological Science, Dongseo University)
Publication Information
Journal of the Korean Society of Radiology / v.16, no.2, 2022 , pp. 151-156 More about this Journal
Abstract
A detector using a small number of photosensors was designed, and the position of a scintillation pixel that interacted with gamma rays through a maximum likelihood position estimation(MLPE) was measured as a digital position. For this purpose, simulation was performed using DETECT2000, which can simulate the movement of light within the scintillator, and the accuracy of position measurement was evaluated. A detector was configured using a 6 × 6 scintillation pixel array and 4 photosensors, and a gamma ray event was generated at the center of each scintillation pixel to create a look-up table through the ratio of acquired light. The gamma-ray event generated at the new position was applied as the input value of the MLPE, and the positiion of the scintillation pixel was converted into a digital positiion after comparison with the look-up table. All scintillation pixels were evaluated, and as a result, a high accuracy of 99.1% was obtained. When this method is applied to the currently usesd system, it is concidered that the process of determining the position of the scintillation pixel will be simplified.
Keywords
Digital position; MLPE; photosensor; DETECT2000;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 https://www.epic-crystal.com/others/light-guide.html
2 B. Pichler, H. F. Wehrl, A. Kolb, and M. S. Judenhofer, "PET/MRI: THE NEXT GENERATION OF MULTI-MODALITY IMAGING?", Seminars in Nuclear Medicine, Vol. 38, No. 3, pp. 199-208, 2008. https://dx.doi.org/10.1053/j.semnuclmed.2008.02.001   DOI
3 N. Otte, B. Dolgoshein, J. Hose, S. Klemin, E. Lorenz, R. Mirzoyan, E. Popova, M. Teshima, "The SiPM-A new Photon Detector for PET," Nuclear Physics B (Proc. Suppl.) Vol. 150, pp. 417-420, 2006. https://doi.org/10.1016/j.nuclphysbps.2004.08.048   DOI
4 I. Sonni, L. Baratto, S. Park, N. Hatami, S. Srinivas, G. Davidzon, S. S. Gambhir, and A. Iagaru, "Initial experience with a SiPM-based PET/CT scanner: influence of acquisition time on image quality," EJNMMI Physics, Vol. 5, No. 9, pp. 1-12, 2018. https://doi.org/10.1186/s40658-018-0207-x   DOI
5 N. G. Kim, G. Kim, J. H. Kwak, S-J. Lee, "Development of PET Detector Module Measuring DOI using Multiple Reflectors," Journal of the Korean Society of Radiology, Vol. 13, No. 6, pp. 825-830, 2019. https://doi.org/10.7742/jksr.2019.13.6.825   DOI
6 Z. Deng, Y. Deng and G. Chen, "Design and Evaluation of LYSO/SiPM LIGHTENING PET Detector with DTI Sampling Method," Sensors, Vol. 20, No. 20, pp. 1-18, 2020. https://doi.org/10.3390/s20205820   DOI
7 S-J. Lee, C-H. Baek, "PET Detector Design with a Small Number of Photo Sensors," Journal of the Korean Society of Radiology, Vol. 15, No. 4, pp. 525-531, 2021. https://doi.org/10.7742/jksr.2021.15.4.525   DOI
8 F. Cayouette, D. Laurendeau, C. Moisan, "DETECT2000: an improved Monte-Carlo simulator for the computer aided design of photon sensing devices," Proceedings of SPIE, Quebec, Vol. 4833, pp. 69-76, 2003. https://doi.org/10.1117/12.474315   DOI
9 F. ayouette, C. Moisan, N. Zhang, C. J. Thompson, "Monte Carlo Modeling of Scintillator Crystal Performance for Stratified PET Detectors With DETECT2000", IEEE Transactions on Nuclear Science, Vol. 49, No. 3, pp. 624-628, 2002. https://doi.org/10.1109/TNS.2002.1039539   DOI
10 https://multimedia.3m.com/mws/media/1389248O/application-guide-for-esr.pdf
11 https://www.epic-crystal.com/oxide-scintillators/gagg-ce-scintillator.html
12 D. L. Bailey, D. W. Townsend, P. E. Valk, M. N. Maisy, Positron Emission Tomography: Basic Science, 1st Ed., Springer-Verlag London Ltd., London, pp. 1-8, 2005.
13 D. Perez-Benito, R. Chil, J. M. Udias, M. Desco, J. J. Vaquero, "SiPM-based PET detector module for a 4π span scanner," Nuclear Instrumnets and Methods in Physics Research A, Vol. 936, pp. 18-21, 2019. https://doi.org/10.1016/j.nima.2018.10.179   DOI
14 P. Lecoq, S. Gundacker, "SiPM applications in positron emission tomography: toward ultimate PET time-of-flight resolution," The European Physical Journal Plus, Vol. 136, No. 292, pp. 1-16, 2021. https://doi.org/10.1140/epjp/s13360-021-01183-8   DOI
15 S. J. Lee, C. H. Baek, "Digital Position Acquisition Method of PET Detector Module using Maximum Likelihood Position Estimation," Journal of the Korean Society of Radiology, Vol. 15, No. 1, pp. 1-7, 2021. https://doi.org/10.7742/jksr.2021.15.1.1   DOI