Itoh Y, Matsushima S, Kinosada Y, Fuwa N, Kikuchi Y
Department of Radiation Oncology, Aichi Cancer Center Hospital.
Nihon Igaku Hoshasen Gakkai Zasshi. 1997 Jan;57(1):67-8.
To assess the late effects of radiotherapy, magnetization transfer was evaluated in 2 patients with breast conservation treatment and in 4 patients without treatment. The magnetization transfer ratios (MTRs) were measured from a pair of images obtained by the conventional SPGR pulse sequence and the MT-prepared SPGR sequence on a 1.5-TMR system. The MTR values of irradiated breast were higher than those of non-irradiated breast. The difference in MTR between them was considered to represent tissue change due to irradiation. We showed that MTR is a useful parameter in estimating the late effects of radiotherapy.
为评估放射治疗的晚期效应，对2例接受保乳治疗的患者和4例未接受治疗的患者进行了磁化传递评估。在1.5-T磁共振成像系统上，从通过传统的扰相梯度回波（SPGR）脉冲序列和磁化传递准备的SPGR序列获得的一对图像中测量磁化传递率（MTR）。照射乳腺的MTR值高于未照射乳腺的MTR值。两者之间MTR的差异被认为代表了照射引起的组织变化。我们表明，MTR是评估放射治疗晚期效应的一个有用参数。
