Patient radiation dose in diagnostic cerebral angiography for intracranial aneurysm: local diagnostic reference levels from a single-center study in Thailand.

Authors

Similan Pookplean, Phonlapat Meesa-Nga, Sirikan Kittichotwarat, Petdao Petchuay

Published in

Radiation protection dosimetry. Sep 01, 2026. Epub Sep 01, 2026.

Abstract

Diagnostic cerebral angiography for intracranial aneurysms can deliver relatively high patient radiation doses, and locally derived diagnostic reference levels (DRLs) are important for optimization. This retrospective single-center study analyzed 186 procedures performed at Vajira Hospital between 2022 and 2024 using a biplane digital subtraction angiography system. Dose-area product (DAP), cumulative air kerma (CAK), fluoroscopy time, number of image frames, and number of three-dimensional rotational angiography (3DRA) acquisitions were recorded for each procedure. Median values across all years served as local typical dose values and were compared with published 75th percentile DRLs, consistent with the International Commission on Radiological Protection (ICRP) 135. The medians were 58.58 Gy·cm2 (DAP), 326.74 mGy (CAK), 6.41 min (fluoroscopy time), 525.50 frames, and 3.00 3DRA acquisitions, with no significant interannual differences. Typical values for DAP, CAK, and fluoroscopy time were lower than those reported in several national and international studies, indicating comparatively low patient doses.

PMID:
42679050
Bibliographic data and abstract were imported from PubMed on 02 Sep 2026.

Read full publication at:
Please sign in to see all details.

Stats

1-terrible, 9-excellent. How would you rate this publication? Sign in in to submit your rating.

Post a comment

You need to be signed in to post comments. You can sign in here.

Comments

There are no comments yet.