弹性(物理)
放射治疗
医学
相关性
头颈部癌
核医学
外科
数学
材料科学
几何学
复合材料
作者
Yihua He,Jinyan Lei,Haiyan Peng,Hong Luo,Kaijin Mao,Dengyan Wang,Lifeng Peng,Yiyu Zhu,Qinghong Min,Xuechun Wang,Huan Tang,Qiang Xiao,Ying Wang
标识
DOI:10.3760/cma.j.issn.1004-4221.2020.01.011
摘要
Objective
To investigate the correlation between skin elasticity and setup error in optical surface image-guided radiotherapy.
Methods
The skin elasticity (R7) data of the head, chest and abdomen were extracted and analyzed its correlation with age by systematic literature review. Fifty-four patients diagnosed with nasopharyngeal carcinoma, breast cancer and cervical cancer were recruited in this study. Firstly, the patients were positioned based on the room laser and markers. Subsequently, the patient position was verified by the Varian On-Board Imager, and then C-Rad Catalyst was adopted to obtain surface images in two states (mask or non-mask) as reference images. In the subsequent fraction treatment, after initial positioning, the local calibration was performed by Catalyst, and setup errors in three directions were recorded. Meanwhile, the patient setup was verified by CBCT twice a week. The Pearson correlation analysis was performed to analyze the correlation between setup error and age.
Results
The skin elasticity was negatively correlated with aging (P SI>AP.
Conclusion
In optical surface-guided radiotherapy of head and neck cancer, skin elasticity may be a significant index for assessing the setup errors in male patients.
Key words:
Skin elasticity; Surface image-guided radiotherapy; Set-up error
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