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马格特雷斯的存在是否排除了在MR-Linac上的适应性乳房放射治疗?

Lucy Siew Chen Davies¹, Lisa McDaid¹, Carmel Anandadas²

¹The Christie NHS Foundation Trust, Department of Radiotherapy, Manchester, United Kingdom.

Journal of medical imaging and radiation sciences

|July 20, 2024

概括

来自乳腺癌追踪器Magtrace的磁感应器造成了显著的图像扭曲. 由于抑制了治疗验证和在线图像注册,该文物使患者无法接受乳房MRI导向放射治疗 (MRIgRT).

科学领域:

医学物理医学物理
在瘤学瘤学.
放射治疗技术放射治疗技术

背景情况:

在1.5T MR-Linac上为乳腺磁共振图像引导放射治疗 (MRIgRT) 的临床实施做准备.
在质量评估过程中检测到一个不寻常的成像工件.

研究的目的:

为了确定乳房MRIgRT准备过程中观察到的显著成像器件的原因.
评估文物对治疗规划和交付的影响.

主要方法:

使用1.5TMR-Linac对患有侵入性导管癌的患者进行成像.
获得了各种MRI序列 (T1W,T2W TSE,T1W mDixon,T2W TSE导航).
进行视觉分级分析 (VGA) 来评估图像质量,并确定了一个信号空虚工件.

主要成果:

在右乳房的subareolar区域观察到一个信号空的文物.
该文物被确定为由Magtrace引起的磁性易感性文物,Magtrace是一种超偏磁铁氧化物追踪器.
该工件显著抑制了治疗验证和在线图像注册,使患者无法接受MR-Linac治疗.

结论:

马格特雷斯可以引起磁感应器件,干扰乳房MRIgRT.
查患者的Magtrace现在是乳腺MRIgRT工作的一个标准部分.
目前正在进行的开发旨在优化MRI成像序列,以最大限度地减少放射治疗规划和图像审查的扭曲.

关键词:

乳腺辐射疗法乳腺辐射疗法案例报告案例报告 MR-Linac 的一个地方.用MRI指导的放射治疗.辐射疗法辐射疗法

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