Gamma radiation detector selection for CT scanner
Three types of gamma radiation detectors associated with distributed electronics namely, NaI (Tl), HPGe and LaBr3(Ce) are compared primarily focusing on electronic noise and scattering noise. Additionally, detectors of same make, material, size and electronics are also compared. A methodology is pro...
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| Format: | Article |
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Elsevier
2025-05-01
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| Series: | Zeitschrift für Medizinische Physik |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0939388923000880 |
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| author | Kajal Kumari Mayank Goswami |
| author_facet | Kajal Kumari Mayank Goswami |
| author_sort | Kajal Kumari |
| collection | DOAJ |
| description | Three types of gamma radiation detectors associated with distributed electronics namely, NaI (Tl), HPGe and LaBr3(Ce) are compared primarily focusing on electronic noise and scattering noise. Additionally, detectors of same make, material, size and electronics are also compared. A methodology is proposed to select the most suitable detector for computed tomography (CT) among the available options. Standard deviation parameter is employed to estimate electronic noise without performing CT experiment. Kanpur theorem-1(KT-1) is used to estimate the scattering noise quantitatively after verifying its sensitivity to scattering noise. The impact of scattering noise on CT profiles is evaluated using dice similarity dice coefficient. A good resemblance between KT-1 and dice coefficient is observed. A maximum difference of 56% in scattering noise is observed when five detectors used simultaneously instead of single detector whereas a discrepancy of 85% is observed between different types of radiation detectors. As far as ease of handling, operational and capital cost is concern one has to compromise minimum 12% of accuracy in CT reconstruction if NaI (Tl) detector is used with respect to best alternative available.The proposed methodology can be applied to measurement that require minimal scattering interference data other than CT experiments. The manufacturer can add noise level of detector as a characteristic parameter in the data sheet. |
| format | Article |
| id | doaj-art-d03324a610f84f92a2a4bf6ec68757bd |
| institution | DOAJ |
| issn | 0939-3889 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Zeitschrift für Medizinische Physik |
| spelling | doaj-art-d03324a610f84f92a2a4bf6ec68757bd2025-08-20T03:08:24ZengElsevierZeitschrift für Medizinische Physik0939-38892025-05-0135212813710.1016/j.zemedi.2023.07.006Gamma radiation detector selection for CT scannerKajal Kumari0Mayank Goswami1Divyadrishti Imaging Laboratory, Department of Physics, IIT Roorkee, Roorkee, IndiaCorresponding author: Mayank Goswami, Divyadrishti Imaging Laboratory, Department of Physics, IIT Roorkee, Roorkee, India; Divyadrishti Imaging Laboratory, Department of Physics, IIT Roorkee, Roorkee, IndiaThree types of gamma radiation detectors associated with distributed electronics namely, NaI (Tl), HPGe and LaBr3(Ce) are compared primarily focusing on electronic noise and scattering noise. Additionally, detectors of same make, material, size and electronics are also compared. A methodology is proposed to select the most suitable detector for computed tomography (CT) among the available options. Standard deviation parameter is employed to estimate electronic noise without performing CT experiment. Kanpur theorem-1(KT-1) is used to estimate the scattering noise quantitatively after verifying its sensitivity to scattering noise. The impact of scattering noise on CT profiles is evaluated using dice similarity dice coefficient. A good resemblance between KT-1 and dice coefficient is observed. A maximum difference of 56% in scattering noise is observed when five detectors used simultaneously instead of single detector whereas a discrepancy of 85% is observed between different types of radiation detectors. As far as ease of handling, operational and capital cost is concern one has to compromise minimum 12% of accuracy in CT reconstruction if NaI (Tl) detector is used with respect to best alternative available.The proposed methodology can be applied to measurement that require minimal scattering interference data other than CT experiments. The manufacturer can add noise level of detector as a characteristic parameter in the data sheet.http://www.sciencedirect.com/science/article/pii/S0939388923000880Computerized tomographyElectronic noiseRadiation scatteringRadiation detection and measurementScintillation detectorSemiconductor detector |
| spellingShingle | Kajal Kumari Mayank Goswami Gamma radiation detector selection for CT scanner Zeitschrift für Medizinische Physik Computerized tomography Electronic noise Radiation scattering Radiation detection and measurement Scintillation detector Semiconductor detector |
| title | Gamma radiation detector selection for CT scanner |
| title_full | Gamma radiation detector selection for CT scanner |
| title_fullStr | Gamma radiation detector selection for CT scanner |
| title_full_unstemmed | Gamma radiation detector selection for CT scanner |
| title_short | Gamma radiation detector selection for CT scanner |
| title_sort | gamma radiation detector selection for ct scanner |
| topic | Computerized tomography Electronic noise Radiation scattering Radiation detection and measurement Scintillation detector Semiconductor detector |
| url | http://www.sciencedirect.com/science/article/pii/S0939388923000880 |
| work_keys_str_mv | AT kajalkumari gammaradiationdetectorselectionforctscanner AT mayankgoswami gammaradiationdetectorselectionforctscanner |