Aoyama Takahiro, Shimizu Hidetoshi, Kitagawa Tomoki, Yokoi Kazushi, Koide Yutaro, Tachibana Hiroyuki, Suzuki Kojiro, Kodaira Takeshi
Department of Radiation Oncology, Aichi Cancer Centre, 1-1 Kanokoden, Chikusa-Ku, Nagoya, Aichi 464-8681, Japan.
Graduate School of Medicine, Aichi Medical University, 1-1 Yazako-karimata, Nagakute, Aichi 480-1195, Japan.
Phys Imaging Radiat Oncol. 2021 Aug 25;19:126-130. doi: 10.1016/j.phro.2021.08.002. eCollection 2021 Jul.
Atlas-based auto-segmentation (ABS) procedure used in radiotherapy can be classified into two groups, one using one atlas per patient (sSM) and the other using multiple atlases (sMM). This study evaluated auto-contouring accuracy and contouring time in patients with prostate cancer using the two procedures. The Dice similarity coefficient of sMM was significantly better than that of sSM (prostate [median, 0.81 (range, 0.66-0.91) vs. 0.64 (0.27-0.71), < 0.01], seminal vesicles [0.49 (0.31-0.80) vs. 0.18 (0.01-0.60), < 0.05], and rectum [0.81 (0.37-0.91) vs. 0.57 (0.31-0.77), < 0.01]). The median contouring times were 2.6 (sMM) and 1.3 min (sSM).
放射治疗中使用的基于图谱的自动分割（ABS）程序可分为两类，一类是为每位患者使用一个图谱（单图谱方法），另一类是使用多个图谱（多图谱方法）。本研究使用这两种程序评估了前列腺癌患者的自动轮廓勾画准确性和轮廓勾画时间。多图谱方法的骰子相似系数显著优于单图谱方法（前列腺[中位数，0.81（范围，0.66 - 0.91）对0.64（0.27 - 0.71），<0.01]，精囊[0.49（0.31 - 0.80）对0.18（0.01 - 0.60），<0.05]，以及直肠[0.81（0.37 - 0.91）对0.57（0.31 - 0.77），<0.01]）。轮廓勾画的中位时间分别为2.6分钟（多图谱方法）和1.3分钟（单图谱方法）。
