The geometry of an immobilization device such as a headrest can cause undesired computed tomography (CT) artifacts that may affect both volume definition and dosimetry in radiotherapy of the brain. The purpose of this work was to reduce CT artifacts caused by a standard hard plastic hollow radiotherapy headrest. This was to be achieved through design and prototyping of a custom‐made head support.

中文翻译：

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通过3D打印放射治疗头支架消除计算机断层扫描成像伪像

固定装置（例如头枕）的几何形状可能会导致不希望的计算机断层扫描（CT）伪影，从而可能影响大脑放射治疗中的体积定义和剂量测定。这项工作的目的是减少由标准硬塑料空心放射治疗头枕引起的CT伪影。这可以通过设计和制作定制头枕的原型来实现。