Department of Radiation Oncology, University of Michigan, Ann Arbor, MI.
Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, CO.
Semin Radiat Oncol. 2018 Jun;28(3):178-184. doi: 10.1016/j.semradonc.2018.02.002.
Magnetic resonance (MR) imaging has become a prevalent modality in radiation oncology owing to its excellent soft-tissue contrast and ability to provide functional information. Recent technological developments have combined MR imaging with treatment delivery systems, to provide in-room MR guidance for patient setup and treatment delivery. Availability of in-room MR imaging enables direct visualization of soft-tissue targets and nearby organs at risk, thus providing a platform for fast and accurate target and organs at risk delineation for plan adaptation and target tracking during treatment. This article describes the 2 clinically implemented MR image-guided radiotherapy systems and their role in target localization and in-room treatment adaptation. Clinical data from early adopters of these systems is reviewed.
磁共振（MR）成像是放射肿瘤学中一种流行的模式，因为它具有出色的软组织对比能力，并能够提供功能信息。最近的技术发展将磁共振成像与治疗输送系统相结合，为患者设置和治疗输送提供了室内磁共振引导。室内磁共振成像的可用性使我们能够直接观察软组织靶区和附近的危及器官，从而为计划适应和治疗过程中的靶区跟踪提供了一个快速、准确地勾画靶区和危及器官的平台。本文描述了 2 种临床实施的磁共振图像引导放射治疗系统及其在靶区定位和室内治疗适应中的作用。对这些系统的早期使用者的临床数据进行了回顾。
