Radiation dose in digital subtraction angiography for patients undergoing endovascular treatment(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2023年第10期
- Page:
- 1255-1259
- Research Field:
- 医学放射物理
- Publishing date:
Info
- Title:
- Radiation dose in digital subtraction angiography for patients undergoing endovascular treatment
- Author(s):
- HOU Kai; CHEN Caizhong; LU Xiuliang; ZENG Mengsu
- Department of Radiology, Zhongshan Hospital, Fudan University/Shanghai Institute of Medical Imaging/Department of Imaging, Shanghai Medical College of Fudan University, Shanghai 200032, China
- Keywords:
- Keywords: digital subtraction angiography radiation dose radiation protection
- PACS:
- R318；R811.1
- DOI:
- DOI:10.3969/j.issn.1005-202X.2023.10.012
- Abstract:
- Abstract: Objective To analyze the radiation dose received by patients treated with endovascular surgery during digital subtraction angiography (DSA), investigate the related factors affecting radiation dose, and compare the difference of radiation dose received by different sites, so as to provide reference for radiation protection. Methods All the radiation doses and dose-related technical parameters of 200 patients were collected and classified according to different diseases, namely type B aortic dissection, abdominal aortic aneurysm, carotid artery stenosis, iliac artery stenosis, and lower extremity arteriosclerosis obliterans (ASO). The total radiation dose, fluoroscopy radiation dose, DSA radiation dose, total radiation exposure time, fluoroscopy exposure time, and DSA time were collected from each patient. The fluoroscopy radiation dose per unit time and contrast radiation dose per unit time were calculated. The DSA dose reports of 1 case of aortic dissection and 1 case of lower extremity ASO were analyzed. Results The total cumulative radiation dose was highest in aortic dissection (entrance skin dose per capita of 680.2 mGy), followed by carotid artery stenosis, abdominal aortic aneurysm, iliac artery stenosis, and lowest in lower extremity ASO (entrance skin dose per capita of 208.6 mGy). The exposure time per capita from high to low was lower extremity ASO, carotid artery stenosis, iliac artery stenosis, abdominal aortic aneurysm, and aortic dissection and the shortest exposure time per capita was 337.8 s in aortic dissection, and the longest was 935.4 s in lower extremity ASO. The majority of the total radiation dose was generated by DSA, among which the proportion in carotid artery stenosis (about 81.6%) was highest. The DSA radiation dose per unit time was highest in aortic dissection (11.24 mGy/s) and lowest in lower extremity ASO (1.38 mGy/s). An increase in the thickness of the irradiated site and the use of electronic amplification multiply the radiation dose received by the patient. Conclusion The radiation dose received by the chest was the highest, followed by the abdomen, head and neck, and the lowest is in the peripheral region. The radiation dose of DSA subtraction accounted for the majority of the total radiation dose.
Last Update: 2023-10-27