| Autor: |
Ryu, Jae-Chan, Yoon, Jong-Tae, Kim, Byung Jun, Kim, Mi Hyeon, Moon, Eun Ji, Suh, Pae Sun, Roh, Yun Hwa, Moon, Hye Hyeon, Kwon, Boseong, Lee, Deok Hee, Song, Yunsun |
| Zdroj: |
Journal of Neurointerventional Surgery; 2024, Vol. 16 Issue: 10 p1021-1026, 6p |
| Abstrakt: |
BackgroundWe aimed to investigate the radiation dose to the eye lens (lens dose) during cerebral angiography and to evaluate the effectiveness of the lens dose reduction protocol for 3-dimensional rotational angiography (3D-RA) in reducing overall lens dose exposure.MethodsWe conducted a randomized, controlled clinical trial at a tertiary hospital with patients undergoing cerebral angiography. The lens dose reduction protocol in 3D-RA involved raising the table to position the patient’s eye lens away from the rotation axis. The lens dose was estimated by measuring the entrance surface air kerma using a photoluminescent glass dosimeter. The lens doses of 3D-RA, overall examination, and image quality were analyzed and compared between the two groups.ResultsA total of 20 participants (mean age, 58±9.4 years; including 12 men [60%]) were enrolled and randomly assigned to either the conventional group or the dose reduction group. The median lens dose in 3D-RA was significantly lower in the dose reduction group compared with the conventional group (1.1 mGy vs 4.5 mGy, p<0.001). The total dose was significantly lower in the dose reduction group (median of 7.5 mGy vs 10.2 mGy, p=0.003). In the conventional group, 3D-RA accounted for 46% of the total lens dose, while in the dose reduction group, its proportion decreased to 16%. No significant differences were observed in the image quality between the groups.ConclusionThe lens dose reduction protocol resulted in a significant reduction in the lens dose of the 3D-RA as well as entire cerebral angiography, while maintaining the image quality. |
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