Neurointervention.  2020 Jul;15(2):67-73. 10.5469/neuroint.2020.00129.

Low-Dose Fluoroscopy Protocol for Diagnostic Cerebral Angiography

  • 1Department of Radiology, Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
  • 2Department of Radiologic Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
  • 3Advanced Therapies, Siemens Healthineers Ltd., Seoul, Korea


We applied a low-dose fluoroscopic protocol in routine diagnostic cerebral angiography and evaluated the feasibility of the protocol.
Materials and Methods
We retrospectively reviewed a total of 60 patients who underwent diagnostic cerebral angiography for various neurovascular diseases from September to November 2019. Routine protocols were used for patients in the first phase and low-dose protocols in the second phase. We compared radiation dose, fluoroscopy time, and complications between groups.
Age, diseases, and operators were not significantly different between the two groups. The mean fluoroscopy dose significantly decreased by 52% in the low-dose group (3.09 vs. 6.38 Gy·cm2 ); however, the total dose was not significantly different between the two groups (34.07 vs. 33.70 Gy·cm2 ). The total fluoroscopic time was slightly longer in the low-dose group, but the difference was not statistically significant (12.2. vs. 12.5 minutes). In all patients, angiography was successfully performed without complications.
The low-dose fluoroscopy protocol is feasible to apply for diagnostic cerebral angiography in that this protocol could significantly reduce the fluoroscopic dose.


Cerebral angiography; Radiation; Fluoroscopy
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