| Wei Shouyi,Li Xinying,Zhang Wei,et al.Feasibility study of automatic assessment of abdominal and pelvic CT radiation dose based on deep learning algorithm[J].Chinese Journal of Radiological Medicine and Protection,2024,44(8):699-703 |
| Feasibility study of automatic assessment of abdominal and pelvic CT radiation dose based on deep learning algorithm |
| Received:October 24, 2023 |
| DOI：10.3760/cma.j.cn112271-20231024-00136 |
| KeyWords:Radiation dose CTDIvol Segmentation Regression Deep learning |
| FundProject: |
| Author Name | Affiliation | E-mail | | Wei Shouyi | Department of Medical Imaging, Peking University First Hospital, Peking 100034, China | | | Li Xinying | Department of Medical Imaging, Peking University First Hospital, Peking 100034, China | | | Zhang Wei | Medical Insurance Management Office, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China | | | Quan Shuo | Department of Medical Imaging, Peking University First Hospital, Peking 100034, China | | | Liu Rongchao | Department of Medical Imaging, Peking University First Hospital, Peking 100034, China | | | Zhang Xiaodong | Department of Medical Imaging, Peking University First Hospital, Peking 100034, China | | | Liu Jianxin | Department of Medical Imaging, Peking University First Hospital, Peking 100034, China | bjxcljx@163.com |
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| Abstract:: |
| Objective To explore the feasibility of automatic assessment of abdominal and pelvic CT radiation dose index (CTDIvol) based on deep learning models. Methods A retrospective analysis was conducted on clinical abdominal and pelvic CT data collected continuously from February 2021 to February 2022. A total of 1 084 sets of patient images were obtained using equipment of Siemens SOMATOM Definition Flash CT, Philips iCT, and GE lightspeed VCT. The volume CT dose index (CTDIvol) prediction model consisted of two functional modules: organ segmentation and dose prediction. Based on the result of actual scanning area segmentation in the abdominal and pelvic area, CTDIvol was evaluated automatically by dose regression prediction module. The images of 1 084 patients included in the study were randomly divided into a training set of 784, a validation set of 196 and a test set of 104. Dice coefficient was used to evaluate the abdominal and pelvic segmentation performance of the hybrid model, and accurate number proportion and root-mean-square logarithm error (RMSLE) were used as the evaluation index of the CTDIvol estimation model performance. Results In the test set, the Dice coefficient of the deep learning model in the task of CT abdominal image segmentation was as high as 0.998, and the RMSLE of the CTDIvol regression model in estimation of radiation dose was 9.41%, with an accuracy rate of 92%. Scatter plot analysis showed that some CTDIvol estimates had significant errors, indicating that the model might need to be further optimized in these situations. Conclusions The deep learning models can accurately and automatically segment CT abdominal images and estimate radiation dose, which can be used for clinical radiation dose monitoring and management. |
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