Pollard Julianne M, Wen Zhifei, Sadagopan Ramaswamy, Wang Jihong, Ibbott Geoffrey S
UT MD Anderson Cancer Center, Houston, TX, USA.
Br J Radiol. 2017 May;90(1073):20160667. doi: 10.1259/bjr.20160667. Epub 2017 Mar 29.
Advances in image-guided radiotherapy (RT) have allowed for dose escalation and more precise radiation treatment delivery. Each decade brings new imaging technologies to help improve RT patient setup. Currently, the most frequently used method of three-dimensional pre-treatment image verification is performed with cone beam CT. However, more recent developments have provided RT with the ability to have on-board MRI coupled to the teleradiotherapy unit. This latest tool for treating cancer is known as MR-guided RT. Several varieties of these units have been designed and installed in centres across the globe. Their prevalence, history, advantages and disadvantages are discussed in this review article. In preparation for the next generation of image-guided RT, this review also covers where MR-guided RT might be heading in the near future.
图像引导放射治疗(RT)的进展使得剂量递增和更精确的放射治疗成为可能。每十年都会带来新的成像技术,以帮助改善放疗患者的摆位。目前,三维治疗前图像验证最常用的方法是使用锥形束CT。然而,最近的进展为放疗提供了将机载MRI与远程放射治疗单元相结合的能力。这种治疗癌症的最新工具被称为磁共振引导放射治疗(MR-guided RT)。已经设计了几种这类设备,并在全球各中心安装。本文综述讨论了它们的普及情况、历史、优缺点。为了迎接下一代图像引导放射治疗,本综述还涵盖了MR引导放射治疗在不久的将来可能的发展方向。