{"title":"利用 LYSO 晶体天然放射性 176Lu 对 uMI550 数字 PET-CT 进行质量控制性能评估","authors":"M.K. Singh , V. Dhull , M. Vishwakarma","doi":"10.1016/j.radi.2024.04.022","DOIUrl":null,"url":null,"abstract":"<div><h3>Purpose</h3><p>Quality Control (QC) of the Positron Emission Tomography-Computed Tomography (PET-CT) system must be performed prior to the PET-CT acquisition to ensure the reproducibility as per the manufacturer recommendation. In this study we have evaluated the performance of daily PET QC test by utilising lutetium yttrium oxyorthosilicate (LYSO) scintillation crystal natural radioactivity of <sup>176</sup>Lu as a source of radiation to perform the PET uCare.iQC with uMI550 digital PET-CT system. This was also compared with existing radioactive external source-based QC test with other manufacturer PET-CT systems.</p></div><div><h3>Method</h3><p>This radioactive source free daily QC study was performed on uMI550 digital PET-CT system. The daily QC data report was captured and interpreted. This PET-CT system has unique feature that utilises the inherent property of LYSO crystal that is <sup>176</sup>Lu with natural radioactivity abundance of 2.6%. The Lutetium-176 (<sup>176</sup>Lu) radioactivity is used to perform the daily QC in PET in place of external radioactive source of Germanium-68 (<sup>68</sup>Ge). This feature work automatically in preschedule manner to complete the daily QC at preset time in the morning and system get ready after the QC test.</p></div><div><h3>Results</h3><p>Over 120 automatic PET daily uCare.iQC test were performed. The daily PET QC test was prescheduling setup for 6:00 am in every morning. No failure on daily QC test were observed. The QC parameters and system parameters consistency was observed.</p></div><div><h3>Conclusion</h3><p>It was concluded that the daily PET QC can be performed by utilising LYSO crystal inherent natural radioactivity of <sup>176</sup>Lu as a source of radiation to perform the test as replacement of external <sup>68</sup>Ge radioactive source.</p></div><div><h3>Implication for practice</h3><p>PET-CT daily QC by utilizing the <sup>176</sup>Lu radioactivity of LYSO crystal results in reducing the radiation exposure to operation staff and reducing operational cost by elimination 68Ge shield source Phantom.</p></div>","PeriodicalId":47416,"journal":{"name":"Radiography","volume":null,"pages":null},"PeriodicalIF":2.5000,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Quality control performance evaluation of uMI550 digital PET-CT by utilising LYSO crystal natural radioactivity of 176Lu\",\"authors\":\"M.K. Singh , V. Dhull , M. Vishwakarma\",\"doi\":\"10.1016/j.radi.2024.04.022\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Purpose</h3><p>Quality Control (QC) of the Positron Emission Tomography-Computed Tomography (PET-CT) system must be performed prior to the PET-CT acquisition to ensure the reproducibility as per the manufacturer recommendation. In this study we have evaluated the performance of daily PET QC test by utilising lutetium yttrium oxyorthosilicate (LYSO) scintillation crystal natural radioactivity of <sup>176</sup>Lu as a source of radiation to perform the PET uCare.iQC with uMI550 digital PET-CT system. This was also compared with existing radioactive external source-based QC test with other manufacturer PET-CT systems.</p></div><div><h3>Method</h3><p>This radioactive source free daily QC study was performed on uMI550 digital PET-CT system. The daily QC data report was captured and interpreted. This PET-CT system has unique feature that utilises the inherent property of LYSO crystal that is <sup>176</sup>Lu with natural radioactivity abundance of 2.6%. The Lutetium-176 (<sup>176</sup>Lu) radioactivity is used to perform the daily QC in PET in place of external radioactive source of Germanium-68 (<sup>68</sup>Ge). This feature work automatically in preschedule manner to complete the daily QC at preset time in the morning and system get ready after the QC test.</p></div><div><h3>Results</h3><p>Over 120 automatic PET daily uCare.iQC test were performed. The daily PET QC test was prescheduling setup for 6:00 am in every morning. No failure on daily QC test were observed. The QC parameters and system parameters consistency was observed.</p></div><div><h3>Conclusion</h3><p>It was concluded that the daily PET QC can be performed by utilising LYSO crystal inherent natural radioactivity of <sup>176</sup>Lu as a source of radiation to perform the test as replacement of external <sup>68</sup>Ge radioactive source.</p></div><div><h3>Implication for practice</h3><p>PET-CT daily QC by utilizing the <sup>176</sup>Lu radioactivity of LYSO crystal results in reducing the radiation exposure to operation staff and reducing operational cost by elimination 68Ge shield source Phantom.</p></div>\",\"PeriodicalId\":47416,\"journal\":{\"name\":\"Radiography\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2024-05-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Radiography\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1078817424000993\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiography","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1078817424000993","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING","Score":null,"Total":0}
引用次数: 0
摘要
目的 正电子发射断层扫描-计算机断层扫描(PET-CT)系统的质量控制(QC)必须在 PET-CT 采集之前进行,以确保制造商建议的可重复性。在这项研究中,我们利用镥钇氧硅酸盐(LYSO)闪烁晶体的天然放射性 176Lu 作为辐射源,对使用 uMI550 数字 PET-CT 系统进行 PET uCare.iQC 的日常 PET QC 测试的性能进行了评估。方法在 uMI550 数字 PET-CT 系统上进行了这项无放射源日常质量控制研究。采集并解读了每日质控数据报告。该 PET-CT 系统的独特之处在于利用了 LYSO 晶体的固有特性,即天然放射性丰度为 2.6% 的 176Lu。镥-176(176Lu)放射性被用来代替外部放射源锗-68(68Ge)执行 PET 的日常质量控制。结果进行了 120 多次自动 PET 日常 uCare.iQC 测试。每日 PET QC 测试的预设时间为每天早上 6:00。未发现日常质量控制测试失败的情况。结论利用 LYSO 晶体固有的 176Lu 天然放射性作为辐射源进行测试,可以取代外部 68Ge 放射源,从而进行 PET 日常 QC。
Quality control performance evaluation of uMI550 digital PET-CT by utilising LYSO crystal natural radioactivity of 176Lu
Purpose
Quality Control (QC) of the Positron Emission Tomography-Computed Tomography (PET-CT) system must be performed prior to the PET-CT acquisition to ensure the reproducibility as per the manufacturer recommendation. In this study we have evaluated the performance of daily PET QC test by utilising lutetium yttrium oxyorthosilicate (LYSO) scintillation crystal natural radioactivity of 176Lu as a source of radiation to perform the PET uCare.iQC with uMI550 digital PET-CT system. This was also compared with existing radioactive external source-based QC test with other manufacturer PET-CT systems.
Method
This radioactive source free daily QC study was performed on uMI550 digital PET-CT system. The daily QC data report was captured and interpreted. This PET-CT system has unique feature that utilises the inherent property of LYSO crystal that is 176Lu with natural radioactivity abundance of 2.6%. The Lutetium-176 (176Lu) radioactivity is used to perform the daily QC in PET in place of external radioactive source of Germanium-68 (68Ge). This feature work automatically in preschedule manner to complete the daily QC at preset time in the morning and system get ready after the QC test.
Results
Over 120 automatic PET daily uCare.iQC test were performed. The daily PET QC test was prescheduling setup for 6:00 am in every morning. No failure on daily QC test were observed. The QC parameters and system parameters consistency was observed.
Conclusion
It was concluded that the daily PET QC can be performed by utilising LYSO crystal inherent natural radioactivity of 176Lu as a source of radiation to perform the test as replacement of external 68Ge radioactive source.
Implication for practice
PET-CT daily QC by utilizing the 176Lu radioactivity of LYSO crystal results in reducing the radiation exposure to operation staff and reducing operational cost by elimination 68Ge shield source Phantom.
RadiographyRADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-
CiteScore
4.70
自引率
34.60%
发文量
169
审稿时长
63 days
期刊介绍:
Radiography is an International, English language, peer-reviewed journal of diagnostic imaging and radiation therapy. Radiography is the official professional journal of the College of Radiographers and is published quarterly. Radiography aims to publish the highest quality material, both clinical and scientific, on all aspects of diagnostic imaging and radiation therapy and oncology.