Kato Mamoru, Chida Koichi, Moritake Takashi, Sato Tadaya, Oosaka Hajime, Toyoshima Hideto, Zuguchi Masayuki, Abe Yoshihisa
Department of Radiology and Nuclear Medicine, Research Institute for Brain & Blood Vessels-Akita, Akita, Japan.
Course of Radiological Technology, Health Sciences, Tohoku University Graduate School of Medicine, Sendai, Japan.
Radiat Prot Dosimetry. 2017 Jun 1;175(1):31-37. doi: 10.1093/rpd/ncw263.
The purpose of this research was to measure accurate patient entrance skin dose and maximum skin absorbed dose (MSD) to prevent radiation skin injuries in percutaneous coronary interventions (PCIs). We directly measured the MSD on 50 PCIs by using multiple radiophotoluminescence glass dosimeters and a modified dosimetry gown. Also, we analysed the correlation between the MSD and indirect measurement parameters, such as fluoroscopic time (FT), dose-area product (DAP) and cumulative air kerma (C-AK). There were very strong correlations between MSD and FT, DAP and C-AK, with the correlation between MSD and C-AK being the strongest (r = 0.938). In conclusion, the regression lines using MSD as an outcome value (y) and C-AK as predictor variables (x) were y = 1.12x (R2 = 0.880). From the linear regression equation, MSD is estimated to be ~1.12 times that of C-AK in real time.
本研究的目的是测量准确的患者入口皮肤剂量和最大皮肤吸收剂量（MSD），以预防经皮冠状动脉介入治疗（PCI）中的放射性皮肤损伤。我们通过使用多个放射光致发光玻璃剂量计和改良的剂量测定服，直接测量了50例PCI中的MSD。此外，我们分析了MSD与间接测量参数之间的相关性，如透视时间（FT）、剂量面积乘积（DAP）和累积空气比释动能（C-AK）。MSD与FT、DAP和C-AK之间存在非常强的相关性，其中MSD与C-AK之间的相关性最强（r = 0.938）。总之，以MSD作为结果值（y）和C-AK作为预测变量（x）的回归线为y = 1.12x（R2 = 0.880）。根据线性回归方程，估计在实际中MSD约为C-AK的1.12倍。
