Depth Encoding PET Detector Using Two and Four Reflector Arrangements along Depth of Single Layer LYSO Array

被引：0

作者：

Zhao B. ^{[1
]}

Fu C. ^{[2
]}

Kuang Z. ^{[1
]}

Wang X. ^{[1
]}

Ren N. ^{[1
]}

Wu S. ^{[1
]}

Yang Q. ^{[1
]}

Sun M. ^{[1
]}

Zhang C. ^{[1
]}

Zhang X. ^{[1
]}

Gao J. ^{[1
]}

Sang Z. ^{[1
]}

Hu Z. ^{[1
]}

Du J. ^{[1
]}

Yang Y. ^{[1
]}

机构：

[1] Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen

[2] Wuhan Second Ship Design and Research Institute, Wuhan

来源：

Yuanzineng Kexue Jishu/Atomic Energy Science and Technology | 2020年 / 54卷 / 03期

关键词：

Depth encoding; PET detector; Reflector; Single layer crystal array; Single-ended readout;

D O I：

10.7538/yzk.2019.youxian.0691

中图分类号：

学科分类号：

摘要：

In this paper, the depth encoding PET detector using different reflector arrangements along the depth of single layer LYSO crystal arrays with SiPM array single-ended readout was proposed. 2×2 LYSO arrays with crystal size of 3 mm×3 mm×20 mm using four and two reflector arrangements along the crystal depth were fabricated and measured. The experimental results show that all crystals can be clearly resolved from the measured flood histograms. For the detector with two reflector arrangements, the average probabilities to make correct assignment to each half and quarter of the crystals are 85.1% and 65.5%, respectively. For the detector with four reflector arrangements, the average probability to make correct assignment to each quarter of the crystals is 74.8%. The depth of interaction (DOI) resolution of the detector with four reflector arrangements is better than that of the detector with two reflector arrangements. The average energy resolutions of the two detectors are 18.0% and 12.2%. The depth encoding PET detector proposed in this paper achieves good DOI resolution with single-ended readout. The detector can be used to develop high performance dedicated brain, whole-body and total-body PET scanners in the future. © 2020, Editorial Board of Atomic Energy Science and Technology. All right reserved.

引用

页码：533 / 541

页数：8

共 31 条

[1] Cherry S.R., The 2006 Henry N. Wagner Lecture: Of mice and men (and positrons)-Advances in PET imaging technology, Journal of Nuclear Medicine, 47, 11, pp. 1735-1745, (2006)
[2] Muehllehner G., Karp J.S., Positron emission tomography, Physics in Medicine and Biology, 51, 13, pp. 117-137, (2006)
[3] Townsend D.W., Positron emission tomography/computed tomography, Seminars in Nuclear Medicine, 38, 3, pp. 152-166, (2008)
[4] Jones T., Townsend D.W., History and future technical innovation in positron emission tomography, Journal of Medical Imaging, 4, 1, (2017)
[5] Moses W.W., Fundamental limits of spatial resolution in PET, Nuclear Instruments and Methods in Physics Research A, 648, pp. 236-240, (2011)
[6] Schmall J.P., Karp J.S., Werner M., Et al., Parallax error in long-axial field-of-view PET scanners-A simulation study, Physics in Medicine and Biology, 61, 14, pp. 5443-5455, (2016)
[7] Berg E., Cherry S.R., Innovations in instrumentation for positron emission tomography, Seminars in Nuclear Medicine, 48, 4, pp. 311-331, (2018)
[8] Ito M., Hong S.J., Lee J.S., Positron emission tomography (PET) detectors with depth-of-interaction (DOI) capability, Biomedical Engineering Letters, 1, 2, pp. 70-81, (2011)
[9] Moses W.W., Derenzo S.E., Design studies for a PET detector module using a PIN photodiode to measure depth of interaction, IEEE Transactions on Nuclear Science, 41, 4, pp. 1441-1445, (1994)
[10] Yang Y., Dokhale P.A., Silverman R.W., Et al., Depth of interaction resolution measurements for a high resolution PET detector using position sensitive avalanche photodiodes, Physics in Medicine and Biology, 51, 9, pp. 2131-2142, (2006)

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