Kawauchi Satoru, Chida Koichi, Moritake Takashi, Hamada Yusuke, Yoda Shogo, Sakuma Hideyuki, Tsuruta Wataro, Matsumaru Yuji
Department of Radiology, Toranomon Hospital, Tokyo, Japan.
Department of Radiological Technology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.
J Neuroendovasc Ther. 2022;16(10):491-497. doi: 10.5797/jnet.oa.2022-0024. Epub 2022 Jul 14.
In interventional neuroradiology (INR), the evaluation of the peak skin dose (PSD) and lens dose is important because the patient radiation dose increases in cases in which the procedure is more difficult and complex. This study evaluated the radiation doses during INR procedures using a direct measurement system.
Radiation dose measurements during INR were performed in 332 patients with unruptured aneurysm (URAN), dural arteriovenous fistula (DAVF), and arteriovenous malformation (AVM). The PSD and bilateral lens doses were analyzed for each disease. The Pearson correlation test was used to determine whether the PSD and lens doses were linearly related to the reference air kerma (K).
In all cases, the PSD and right and left lens doses were 2.36 ± 1.28 Gy, 114.2 ± 54.6 mGy, and 189.8 ± 160.3 mGy, respectively. The PSD and lens doses of the DAVF and AVM cases were significantly higher than those of the URAN case. The Pearson correlation test revealed statistically significant positive correlations between K and PSD, K and right lens dose, and K and left lens dose.
The characteristics of radiation dose in INR were clarified. Owing to the concern of increased radiation doses exceeding the threshold values in DAVF and AVM cases, protection from radiation is required. Simple regression analysis revealed the possibility of precisely predicting PSD using K.
在介入神经放射学（INR）中，评估皮肤峰值剂量（PSD）和晶状体剂量很重要，因为在手术难度更大、更复杂的情况下患者的辐射剂量会增加。本研究使用直接测量系统评估了INR手术期间的辐射剂量。
对332例未破裂动脉瘤（URAN）、硬脑膜动静脉瘘（DAVF）和动静脉畸形（AVM）患者进行了INR手术期间的辐射剂量测量。分析了每种疾病的PSD和双侧晶状体剂量。采用Pearson相关性检验来确定PSD和晶状体剂量是否与参考空气比释动能（K）呈线性相关。
在所有病例中，PSD以及右侧和左侧晶状体剂量分别为2.36±1.28 Gy、114.2±54.6 mGy和189.8±160.3 mGy。DAVF和AVM病例的PSD和晶状体剂量显著高于URAN病例。Pearson相关性检验显示K与PSD、K与右侧晶状体剂量以及K与左侧晶状体剂量之间存在统计学上显著的正相关。
明确了INR中辐射剂量的特征。由于担心DAVF和AVM病例中辐射剂量增加超过阈值，需要进行辐射防护。简单回归分析显示了使用K精确预测PSD的可能性。
