Chan Shan-Ho, Huang Ya-Yu, Tsai Shu-Huei, Wang Jui-Chu, Chen Yi-Ren, Kang Chen-Lin
Department of Medical Imaging and Radiology, Shu-Zen Junior College of Medicine and Management, Kaohsiung, Taiwan.
Department of Radiation Oncology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan.
Cancer Manag Res. 2022 Nov 5;14:3131-3137. doi: 10.2147/CMAR.S384110. eCollection 2022.
Wearing a mask during the coronavirus disease 2019 epidemic (COVID-19) is a preventive way to reduce droplet and aerosol transmission. The purpose of this study was to evaluate the position error of wearing a surgical mask during radiotherapy in head and neck cancer patients.
We collected and analyzed 2351 kV X-ray image records of 81 patients with head and neck cancer who underwent image-guided radiotherapy (IGRT). Patients with/without a surgical mask were divided into the head-neck (HN) mask group and head-neck-shoulder (HNS) mask group. The position error in the X (left-right), Y (superior-inferior), Z (anterior-posterior), 3D (three dimensional) vectors, as well as the pitch and yaw axes were compared between the four groups.
We found that patients wearing surgical masks in the HN mask group showed no significant differences in the mean position error of the different types of headrest (p>0.05). In the HNS mask group, only the type C headrest group showed significant differences (P < 0.05). The X axis values were -0.05±0.07 and -0.11± 0.01 cm (P = 0.04), and the pitch axis values were 0.34±0.29° and 0.83±0.08° (P = 0.01).
The mean position error of most patients wearing surgical masks was not greater than patients without a surgical mask. Patients wearing while receiving treatment is a low-cost and easy-to-implement prevention method.
在2019冠状病毒病疫情（COVID-19）期间佩戴口罩是减少飞沫和气溶胶传播的一种预防方式。本研究的目的是评估头颈癌患者在放射治疗期间佩戴外科口罩时的位置误差。
我们收集并分析了81名头颈癌患者接受图像引导放射治疗（IGRT）的2351张千伏X线图像记录。佩戴/未佩戴外科口罩的患者被分为头颈（HN）口罩组和头颈肩（HNS）口罩组。比较了四组之间在X（左右）、Y（上下）、Z（前后）、三维（3D）向量以及俯仰和偏航轴上的位置误差。
我们发现，HN口罩组中佩戴外科口罩的患者在不同类型头枕的平均位置误差上无显著差异（p>0.05）。在HNS口罩组中，仅C型头枕组存在显著差异（P<0.05）。X轴值分别为-0.05±0.07和-0.11±0.01厘米（P = 0.04），俯仰轴值分别为0.34±0.29°和0.83±0.08°（P = 0.01）。
大多数佩戴外科口罩患者的平均位置误差不大于未佩戴外科口罩的患者。患者在接受治疗时佩戴口罩是一种低成本且易于实施的预防方法。
