“为确保植入粒子的安全性，在1987和1991之间采用的是拍摄正交片的方法”，研究作者写道。 “而在1992， 使用的则是CT扫描剂量测定法。 ”

"Postimplant quality assurance was by the use of orthogonal films between 1987 and 1991, " the authors wrote. "In 1992 postimplant CT scan dosimetry was performed. "

youdao

“为确保植入粒子的安全性，在1987和1991之间采用的是拍摄正交片的方法”，研究作者写道。 “而在1992， 使用的则是CT扫描剂量测定法。 ”

"Postimplant quality assurance was by the use of orthogonal films between 1987 and 1991, " the authors wrote. "In 1992 postimplant CT scan dosimetry was performed. "

youdao