[Examination of Exposure Dose by Procedure in Cerebral Angiography].

Objective: In cerebral angiography, the patient's exposure dose varies greatly depending on the target site, purpose, and difficulty of the procedure. Therefore, it is necessary to manage the dose based on not only the disease but also the procedure.

Methods: In this study, diagnostic cerebral angiography (diagnosis group) was classified into 13 procedures and neuro-interventional radiology (treatment group) was classified into 10 procedures, and the total dose, fluoroscopy dose, radiographic dose, fluoroscopy time, and number of radiographic frames were compared.

Results: For each item, the treatment group was significantly higher than the diagnosis group, but for some, the diagnosis group exceeded the median of treatment group. For the diagnosis group, the total irradiation time and fluoroscopy time were significant, and for the treatment group, all the items showed significant differences due to differences in procedures, and there were also cases where the same disease had differences due to procedures.

Conclusion: To manage patient exposure in cerebral angiography, it is necessary to manage the usage rate and dose of fluoroscopy and radiography. In addition, it is important to evaluate, manage, and optimize the total dose, fluoroscopic dose, and radiographic dose for each procedure in not only the treatment group but also the diagnosis group.