Evaluation of sequence tracking methods for Compton cameras based on CdZnTe arrays
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 ×...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Nuclear Engineering and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S173857332100348X |
| _version_ | 1819113282895609856 |
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| author | Jun Lee Younghak Kim Aleksey Bolotnikov Wonho Lee |
| author_facet | Jun Lee Younghak Kim Aleksey Bolotnikov Wonho Lee |
| author_sort | Jun Lee |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-22T04:26:56Z |
| format | Article |
| id | doaj.art-5ab37fc9f7114f3f9fd8bf3f1238f2d7 |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-12-22T04:26:56Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-5ab37fc9f7114f3f9fd8bf3f1238f2d72022-12-21T18:39:07ZengElsevierNuclear Engineering and Technology1738-57332021-12-01531240804092Evaluation of sequence tracking methods for Compton cameras based on CdZnTe arraysJun Lee0Younghak Kim1Aleksey Bolotnikov2Wonho Lee3Department of Health and Safety Convergence Science, Korea University, Seoul, 02841, South KoreaDepartment of Bio-convergence Engineering, Korea University, Seoul, 02841, South KoreaInstrumentation Division, Brookhaven National Laboratory, Upton, NY, 11973, USASchool of Health and Environmental Science, Korea University, Seoul, 02841, South Korea; Corresponding author.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.http://www.sciencedirect.com/science/article/pii/S173857332100348XSequence tracking methodCZT detectorCompton cameraMultiple interaction events |
| spellingShingle | Jun Lee Younghak Kim Aleksey Bolotnikov Wonho Lee Evaluation of sequence tracking methods for Compton cameras based on CdZnTe arrays Nuclear Engineering and Technology Sequence tracking method CZT detector Compton camera Multiple interaction events |
| title | Evaluation of sequence tracking methods for Compton cameras based on CdZnTe arrays |
| title_full | Evaluation of sequence tracking methods for Compton cameras based on CdZnTe arrays |
| title_fullStr | Evaluation of sequence tracking methods for Compton cameras based on CdZnTe arrays |
| title_full_unstemmed | Evaluation of sequence tracking methods for Compton cameras based on CdZnTe arrays |
| title_short | Evaluation of sequence tracking methods for Compton cameras based on CdZnTe arrays |
| title_sort | evaluation of sequence tracking methods for compton cameras based on cdznte arrays |
| topic | Sequence tracking method CZT detector Compton camera Multiple interaction events |
| url | http://www.sciencedirect.com/science/article/pii/S173857332100348X |
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