| Han Xiaonan,Zhang Jun,Zhong Zhiwei,et al.Study on radiation dose and image quality differences between cone-beam CT and multi-slice spiral CT for atlantoaxial spine imaging[J].Chinese Journal of Radiological Medicine and Protection,2023,43(5):379-385 |
| Study on radiation dose and image quality differences between cone-beam CT and multi-slice spiral CT for atlantoaxial spine imaging |
| Received:December 08, 2022 |
| DOI：10.3760/cma.j.cn112271-20221208-00477 |
| KeyWords:Atlantoaxial Cone beam computed tomography Multi-slice spiral computed tomography Image quality Radiation dose |
| FundProject:河北省卫生健康委员会重点科技研究计划(20211623);河北省卫生健康委员会医学适用技术跟踪项目计划(GZ2022036) |
| Author Name | Affiliation | E-mail | | Han Xiaonan | Department of Radiology, Third Hospital of Hebei Medical University, Shijiazhuang 050000, China | | | Zhang Jun | Department of Radiology, Third Hospital of Hebei Medical University, Shijiazhuang 050000, China | | | Zhong Zhiwei | Department of Radiology, Third Hospital of Hebei Medical University, Shijiazhuang 050000, China | | | Wu Wenjuan | Department of Radiology, Third Hospital of Hebei Medical University, Shijiazhuang 050000, China | | | Guo Zhe | Department of Radiology, Third Hospital of Hebei Medical University, Shijiazhuang 050000, China | | | Xu Hui | Department of Radiology, First Hospital of Hebei Medical University, Shijiazhuang 050000, China | | | Wu Huizhao | Department of Radiology, Third Hospital of Hebei Medical University, Shijiazhuang 050000, China | wuhuizhao2004@sina.com |
|
| Hits: 2337 |
| Download times: 925 |
| Abstract:: |
| Objective To compare the differences in radiation dose and image quality between cone-beam CT (CBCT) and multi-slice spiral CT (MSCT) applied to atlantoaxial spine imaging. Methods Head and neck phantom was scanned at 30 exposure parameter combinations using Pramerica CBCT scanner and 15 parameter combinations using Toshiba 320-row MSCT. The effective dose (E) of CBCT was calculated based on the Monte Carlo dose estimation software PCXMC, the E value of MSCT was obtained by multiplying the dose length product (DLP) by the related factor. t-test for two independent samples or Wilcoxon rank sum test were used for comparison of radiation dose and subjective and objective image quality between two modalities. The subjective evaluation was a 5-point subjective scale using double-blind method for edge sharpness, contrast, soft tissue level, and artifacts of the images. The signal and noise in the region of interest (ROI) were measured and the contrast signal-to-noise ratio (CNR) was calculated. Results For radiation dose,the volumetric dose index and E values of 2.9 mGy and 27.61 μSv for CBCT were lower than those of 8.8 mGy and 433.16 μSv for MSCT, and the differences were statistically significant(z=-3.05, -5.25,P<0.05). For objective evaluation of image quality, the noise and CNR were 27.74 HU and 3.69 in CBCT group, 7.84 HU and 27.1 in MSCT group. The difference between them were statistically significant(z=-5.39, -5.42,P<0.05). The overall image quality, contrast and artifact scores of the CBCT group were 3.5, 3.0 and 5 were higher than those of the MSCT group at 2.0, 2.0, and 4.0, respectively (z=-2.32, -2.46, -3.31,P<0.05). Conclusions Both atlantoaxial CBCT and MSCT scans provide image quality that meets diagnostic requirements. Compared to MSCT, CBCT atlantoaxial scans can effectively reduce radiation dose according to the principle of optimization of radiation protection. |
| HTML View Full Text View/Add Comment Download reader |
| Close |
|
|
|
