| Cai Juntao,Xu Yunbo,Li Peng.Conventional quality control and evaluation of Leksell Icon Gamma Knife cone-beam CT[J].Chinese Journal of Radiological Medicine and Protection,2023,43(1):63-67 |
| Conventional quality control and evaluation of Leksell Icon Gamma Knife cone-beam CT |
| Received:October 08, 2022 |
| DOI：10.3760/cma.j.cn112271-20221008-00403 |
| KeyWords:Gamma knife Cone-beam CT Quality control Image quality |
| FundProject:江苏省重点研发计划社会发展项目（BE2022720）；江苏省卫健委面上项目（M2020006） |
| Author Name | Affiliation | E-mail | | Cai Juntao | Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China | | | Xu Yunbo | Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China | | | Li Peng | Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China | lipeng_md@163.com |
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| Abstract:: |
| Objective To analyze the conventional quality control result of Leksell Icon Gamma Knife cone-beam CT and evaluate long-term stability of cone-bem CT.Methods QA TOOL Plus was used to verify the accuracy of cone-beam CT. The phantom Catphan 503 was scanned, and the image spatial resolution, contrast to noise ratio and homogeneity were analyzed.Results The maximum deviation in image volume of cone-beam CT was 0.09-0.17mm, which passed the accuracy test. At the scanning patterns with CT dose index of 2.5 and 6.3mGy, the spatial resolution was very stable at 7 and 8 lp/cm respectively. The contrast noise ratio and uniformity meet the reference requirements.Conclusions The conventional quality control results of Leksell Icon Gamma Knife cone-beam CT are stable in 12 months. In addition to referring to the manufacturer's baseline value, the unified analysis and evaluation standard for Gamma Knife need to be further improved for the quality control of cone-beam CT. |
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