Niewald M, Lehmann W, Scharding B, Berberich W, Schnabel K, Leetz H K
Strahlenther Onkol. 1986 Jul;162(7):448-54.
A most precise immobilisation of the patient's head is indispensable in order to reach a high degree of exactness and reproducibility in radiotherapy of malignant head and neck tumors. Face masks made of different synthetic materials have proved to be a simple and economical solution for this problem. Based on our own experiences with "Baycast Longuettes" (manufacturing firm: Johnson & Johnson, Düsseldorf), eleven substances have been tested in the phantom (compound of plaster and synthetic resin, thermoplast, polyurethane foam, compounds of cotton and synthetic resin, and fibre glass compounds). An appropriate material was "Hexcelite" (manufacturing firm: Medimex, Hamburg), a reticulated thermoplast which after warming up can be easily adapted to the patient's face and which guarantees a very good fixation of the head. As compared to solid masks, there is only a slight superposition of the depth dose of Co-60 gamma radiation by secondary electrons from the mask material, so that an increased rate of radiogenic dermatitides is not to be expected.
为了在恶性头颈部肿瘤的放射治疗中达到高度的精确性和可重复性，患者头部的最精确固定是必不可少的。由不同合成材料制成的面罩已被证明是解决这个问题的一种简单且经济的方法。基于我们自己使用“Baycast Longuettes”（生产公司：强生公司，杜塞尔多夫）的经验，已经在体模中测试了11种物质（石膏与合成树脂的混合物、热塑性塑料、聚氨酯泡沫、棉与合成树脂的混合物以及玻璃纤维混合物）。一种合适的材料是“Hexcelite”（生产公司：Medimex，汉堡），一种网状热塑性塑料，加热后可以很容易地贴合患者面部，并能保证对头的良好固定。与固体面罩相比，面罩材料产生的二次电子对钴-60γ射线深度剂量的叠加很小，因此预计不会增加放射性皮炎的发生率。
