Preliminary investigation of adult CT diagnostic reference levels in selected institutions in Qingdao City, China
10.13491/j.issn.1004-714X.2024.04.010
- VernacularTitle:青岛市部分医疗机构CT检查成人诊断参考水平的前期调查
- Author:
Xiaoyu LIU
1
;
Xiuyun ZHANG
2
;
Dong ZHANG
3
;
Guohua WANG
4
;
Zijing CHE
3
;
Zhenyou LIU
3
Author Information
1. The Children’s Hospital of Fudan University, Shanghai 201102 China.
2. Qingdao Central Medical Group, Qingdao 266042 China.
3. Qingdao 8th People’s Hospital, Qingdao 266121 China.
4. Qingdao Municipal Hospital, Qingdao 266071 China.
- Publication Type:OriginalArticles
- Keywords:
CT diagnostic reference level;
Computed tomography dose index volume;
Dose length product
- From:
Chinese Journal of Radiological Health
2024;33(4):409-414
- CountryChina
- Language:Chinese
-
Abstract:
Objective To provide data base for the development of X-ray computed tomography (CT) diagnostic reference levels suitable for the physical characteristics of residents in Qingdao City, China. Methods A total of 3351 cases of adult CT scan data derived from 14 devices were randomly selected from three tertiary hospitals and one primary hospital from January 1 to December 31, 2022. CT examination was performed on the brain, paranasal sinus, neck, chest, abdomen, cervical vertebrae, and lumbar vertebrae. The cases also included CT angiography (CTA) data on the brain, neck artery, pulmonary artery, and aorta. The data types included tube voltage (kV), effective tube current (mAs), computed tomography dose index volume (CTDIvol), and dose length product (DLP). The 1st, 2nd, 3rd quartile values of CTDIvol and DLP were calculated. Results Large differences were observed in DLP among different body parts of adults. The DLP value showed a descending order of craniocerebral CTA, craniocerebral CT, abdomen CT, lumbar vertebral spiral CT, aorta CTA, pulmonary artery CTA, paranasal sinus CT, chest CT, cervical vertebral spiral CT, and neck CT. The 3rd quartile DLP values of the brain and neck were 657.9 and 228.1 mGy·cm, respectively. The CTDIvol of the brain was largest (3rd quartile, 52.0 mGy) and the CTDIvol of the chest was smallest (3rd quartile, 8.2 mGy). Conclusion There are significant differences in CTDIvol and DLP between different body parts of adults in Qingdao City, and CT radiation dose levels are relatively low compared to other regions in China and other countries.
