| Yu Li,Huijun Xu,Sujing Zhang,Xiaoliang Liu. Comparison of the dose to lung volume between supine and prone position during treatment planning. Oncol Transl Med, 2015, 1: 271-274. |
| 仰卧与俯卧位计划设计中肺体积受量的对比 |
| Comparison of the dose to lung volume between supine and prone position during treatment planning |
| Received:April 24, 2015 Revised:December 01, 2015 |
| DOI：10.1007/s10330-015-0091-y |
| 中文关键词: 仰卧、俯卧、计划设计、肺 |
| 英文关键词: supine position; prone position; treatment planning; lung |
| 基金项目:Supported by a grant of 2013 the General Logistics Department Military Logistic Research Project Key Programs (No. BWS13J031). |
| Author Name | Affiliation | E-mail | | Yu Li | Radiation Oncology Center, The Military Hospital 302 of China, Beijing 100039, China | liyu0776@163.com | | Huijun Xu* | Radiation Oncology Center, The Military Hospital 302 of China, Beijing 100039, China | huijunxu2008@sina.com | | Sujing Zhang | Radiation Oncology Center, The Military Hospital 302 of China, Beijing 100039, China | sujingzhang2001@sohu.com | | Xiaoliang Liu | Radiation Oncology Center, The Military Hospital 302 of China, Beijing 100039, China | xiaoliangj3j@163.com |
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| 中文摘要: |
| 目的 对比胸椎棘突部转移肿瘤仰卧与俯卧位射波刀计划设计的肺体积受量，为降低正常肺组织损伤提供参考依据。方法 选取胸椎棘突部转移肿瘤共9例，分别采用仰卧与俯卧位计划设计，对比两种计划设计的结果。结果 仰卧位与俯卧位相比，机器跳数多14862~36337 MU；肺D5%高5.20~7.90 Gy；肺D20%高2.61~5.73 Gy。脊髓体积剂量相差-2.21~2.67 Gy；皮肤体积受量相差-3.93~7.85 Gy；食管体积剂量相差0.28~6.39 Gy。结论 俯卧位计划设计比仰卧位能更好的保护肺组织，提高射线利用率。 |
| 英文摘要: |
| Objective: The aim of the study was to compare the dose to lung volume in the supine and prone position while designing CyberKnife treatment plans to treat metastatic tumors in the spinous processes of the thoracic vertebrae, and offer a reference for reducing damage to normal tissues.
Methods: Nine cases of metastatic tumors in the spinous processes of the thoracic vertebrae were selected, and then we designed treatment plans based on the supine and prone positions and compared the results.
Results: In contrast with the treatment plan based on the prone position, the one for the supine position required 14862–36337 MU more; the lung D5% was 5.20–7.90 Gy higher; and the lung D20% was 2.61–5.73 Gy higher. The difference of dose to spine volume between the two plans was –2.21–2.67 Gy; to the skin volume was –3.93–7.85 Gy; and to the esophagus was 0.28–6.39 Gy.
Conclusion: The treatment plan based on the prone position of patients can better protect lung tissues than the one based on the supine position, and can also improve the availability of beams. |
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