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http://dx.doi.org/10.1016/j.net.2021.06.027

Evaluation of sequence tracking methods for Compton cameras based on CdZnTe arrays  

Lee, Jun (Department of Health and Safety Convergence Science, Korea University)
Kim, Younghak (Department of Bio-convergence Engineering, Korea University)
Bolotnikov, Aleksey (Instrumentation Division, Brookhaven National Laboratory)
Lee, Wonho (School of Health and Environmental Science, Korea University)
Publication Information
Nuclear Engineering and Technology / v.53, no.12, 2021 , pp. 4080-4092 More about this Journal
Abstract
In this study, the performance of sequence tracking methods for multiple interaction events in specific CdZnTe Compton imagers was evaluated using Monte Carlo simulations. The Compton imager consisted of a 6 × 6 array of virtual Frisch-grid CZT crystals, where the dimensions of each crystal were 5 × 5 × 12 mm3. The sequence tracking methods for another Compton imager that consists of two identical CZT crystals arrays were also evaluated. When 662 keV radiation was incident on the detectors, the percentages of the correct sequences determined by the simple comparison and deterministic methods for two sequential interactions were identical (~80%), while those evaluated using the minimum squared difference method (55-59%) and Three Compton method (45-55%) for three sequential interactions, differed from each other. The reconstructed images of a 662 keV point source detected using single and double arrays were evaluated based on their angular resolution and signal-to-noise ratio, and the results showed that the double arrays outperformed single arrays.
Keywords
Sequence tracking method; CZT detector; Compton camera; Multiple interaction events;
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1 Y. Kim, T. Lee, W. Lee, Double-layered CZT Compton imager, IEEE Trans. Nucl. Sci. 64 (2017) 1769-1773.   DOI
2 C.E. Lehner, Z. He, Image artifacts resulting from gamma-ray tracking algorithms used with Compton imagers, in: IEEE Symposium Conference Record Nuclear Science, Rome, Italy, Oct 16-22, 2004.
3 Y. Kim, W. Lee, The development of virtual frisch-grid CZT imager based on the array structure, J. Rad. Pro. Dosim 45 (1) (2020) 35-44.
4 F. Biggs, L.B. Mendelsohn, J.B. Mann, Hartree-fock Compton profiles for the elements, Atomic Data Nucl. Data Tables 16 (1975) 201-309.   DOI
5 J. Lee, Evaluation on Compton Sequence Methods for Multiple Interaction Events Based on Array of CZT Compton Camera, M.S. thesis, department of health and safety convergence science, University of Korea, Seoul, 2020.
6 V. Schonfelder, R. Diehl, G.G. Lichti, H. Steinle, B.N. Swanenburg, A.J.M. Deerenberg, H. Aarts, J. Lockwood, W. Webber, J. Macri, J. Ryan, G. Simpson, B.G. Taylor, K. Bennett, M. Snelling, The imaging Compton telescope comtel on the gamma ray observatory, IEEE Trans. Nucl. Sci. NS- 31 (1984) 766-770.
7 A.E. Bolotnikov, J. Butcher, G.S. Camarda, Y. Cui, G. De Geronimo, J. Fried, R. Gul, P.M. Fochuk, M. Hamade, A. Hossain, K. Kim, O.V. Kopach, M. Petryk, E. Vernon, G. Yang, R.B. James, F. Zhang, 4 π Compton imaging using a 3-D position-sensitive CdZnTe detector via weighted list-mode maximum likelihood, IEEE Trans. Nucl. Sci. 59 (2012) 1544-1550.   DOI
8 J.B. Martin, N. Dogan, J.E. Gormley, G.F. Knoll, M. O'Donnell, D.K. Wehe, Imaging multi-energy gamma-ray fields with a Compton scatter camera, IEEE Trans. Nucl. Sci. 41 (1994) 1019-1025.   DOI
9 R. Cesareo, A.L. Hanson, G.E. Gigante, L.J. Pedraza, S.Q.G. Mahtaboally, Interaction of keV photons with matter and new applications, Phys. Rep. 213 (1992) 117-178.   DOI
10 M. Singh, R.R. Brechner, Experimental test-object study of electronically collimated SPECT, J. Nucl. Med. 31 (1990) 178-186.
11 D. Xu, Z. He, C.E. Lehner, F. Zhang, 4-pi Compton imaging with single 3D position-sensitive CdZnTe detector, Proc. SPIE 5540 (2004) 144-155.
12 C.E. Lehner, Z. He, F. Zhang, 4 π Compton imaging using a 3-D position-sensitive CdZnTe detector via weighted list-mode maximum likelihood, IEEE Trans. Nucl. Sci. 51 (2004) 1618-1624.   DOI
13 J. Chu, Advanced Imaging Algorithms with Position-Sensitive Gamma-Ray Detectors, Ph.D. dissertation, department of nuclear engineering and radiological science, University of Michigan, Ann Arbor, MI, 2018.
14 Z. He, Review of the Shockley-Ramo theorem and its application in semiconductor gamma-ray detectors, Nucl. Instrum. Methods A. 463 (2001) 250-267.   DOI
15 W. Lee, A.E. Bolotnikov, T. Lee, G.S. Camarda, T. Cui, R. Gul, A. Hossain, Y. Roy, G. Yang, R.B. James, Mini Compton camera based on an array of Frisch-grid CdZnTe detectors, IEEE Trans. Nucl. Sci. 63 (2016) 259-265.   DOI
16 R.A. Kroeger, W.N. Johnson, J.D. Kurfess, B.F. Phlips, E.A. Wulf, Three-compton telescope: theory, simulations, and performance, IEEE Trans. Nucl. Sci. 49 (2002) 1887-1892.   DOI
17 D. Xu, Gamma-Ray Imaging and Polarization Measurement Using 3-D Position-Sensitive CdZnTe Detectors, Ph.D. dissertation, department of nuclear engineering and radiological science, University of Michigan, Ann Arbor, MI, 2006.
18 U.G. Oberlack, E. Aprile, A. Curioni, V. Egorov, K.L. Giboni, Compton scattering sequence reconstruction algorithm for the liquid xenon gamma-ray imaging telescope (LXeGRIT), Proc. SPIE 4141 (2000) 168-177.
19 C.E. Lehner, 4-pi Compton Imaging Using a Single 3-D Position Sensitive CdZnTe Detector, Ph.D. dissertation, department of nuclear engineering and radiological science, University of Michigan, Ann Arbor, MI, 2004.
20 H.H. Barrett, T. White, L.C. Parra, List-mode likelihood, J. Opt. Soc. Amer. A 14 (1997) 2914-2923.   DOI
21 L. Parra, H.H. Barrett, List-mode likelihood: EM algorithm and image quality estimation demonstrated on 2-D PET, IEEE Trans. Med. Imag. 17 (1998) 228-234.   DOI
22 Y. Du, Development of a Prototype Compton Scattering Camera Using 3-D Position Sensitive CZT Detectors, Ph.D. dissertation, department of nuclear engineering and radiological science, University of Michigan, Ann Arbor, MI, 2001.
23 C.E. Ordonez, A. Bolozdynya, W. Chang, Doppler broadening of energy spectra in Compton cameras, IEEE Nucl. Sci. Symp. Conf. Rec. 2 (1997) 1361-1365.