CORC

在结果中检索

CORC

浏览/检索结果: 共8条，第1-8条 帮助

已选(0)清除 条数/页：   排序方式：
Different setup errors assessed by weekly cone-beam computed tomography on different registration in nasopharyngeal carcinoma treated with intensity-modulated radiation therapy 期刊论文
OncoTargets and Therapy, 2015, 卷号: 8, 页码: 2545-2553
作者:  Su, Jiqing;  Chen, Wen;  Yang, Huiyun;  Hong, Jidong;  Zhang, Zijian
收藏  |  浏览/下载：3/0  |  提交时间：2019/12/03
The study aimed to investigate the difference of setup errors on different registration in the treatment of nasopharyngeal carcinoma based on weekly cone-beam computed tomography (CBCT). Thirty nasopharyngeal cancer patients scheduled to undergo intensity-modulated radiotherapy (IMRT) were prospectively enrolled in the study. Each patient had a weekly CBCT before radiation therapy. In the entire study  201 CBCT scans were obtained. The scans were registered to the planning CT to determine the difference of setup errors on different registration sites. Different registration sites were represented by bony landmarks. Nasal septum and pterygoid process represent head  cervical vertebrae 1–3 represent upper neck  and cervical vertebrae 4–6 represent lower neck. Patient positioning errors were recorded in the right–left (RL)  superior–inferior (SI)  and anterior–posterior (AP) directions over the course of radiotherapy. Planning target volume margins were calculated from the systematic and random errors. In this study  we can make a conclusion that there are setup errors in RL  SI  and AP directions of nasopharyngeal carcinoma patients undergoing IMRT. In addition  the head and neck setup error has the difference  with statistical significance  while patient setup error of neck is greater than that of head during the course of radiotherapy. In our institution  we recommend a planning target volume margin of 3.0 mm in RL direction  1.3 mm in SI direction  and 2.6 mm in AP direction for nasopharyngeal cancer patients undergoing IMRT with weekly CBCT scans.  
A Theoretic Revelation of Strategic Positioning, Value Co-Creation and Innovation Performance 会议论文
1st International Symposium on Social Science (ISSS), 2015-01-01
作者:  Jia, Junlan[1]
收藏  |  浏览/下载：3/0  |  提交时间：2019/04/26
综合AHP与QFD方法的现代物流中心定位研究 学位论文
2013, 2013
陈伟
收藏  |  浏览/下载：2/0  |  提交时间：2016/01/13
我国硕士研究生自我发展定位现状调查研究——以厦门大学为例 期刊论文
2012
朱贺玲
收藏  |  浏览/下载：2/0  |  提交时间：2016/05/17
How to position the cursor? An exploration of absolute and relative cursor positioning for back-of-device input 会议论文
作者:  Hasan, Khalad;  Yang, Xing-Dong;  Liang, Hai-Ning;  Irani, Pourang
收藏  |  浏览/下载：2/0  |  提交时间：2019/12/10
中润现代城房地产项目可行性研究 学位论文
2010, 2010
陈建
收藏  |  浏览/下载：1/0  |  提交时间：2016/02/14
Study on land use and land cover change with the integration of RS, GIS and GPS technologies-the case of baotou city in the ecotone of agriculture-animal husbandry, China 会议论文
2008 IEEE International Geoscience and Remote Sensing Symposium - Proceedings, Boston, MA, United states, July 6, 2008 - July 11, 2008
作者:  Cheng, Yu;  Nie, Junsheng;  Li, Gang;  Zhang, Chunhui;  Wang, Wenrui,
收藏  |  浏览/下载：3/0  |  提交时间：2017/01/18
Experiment Study of Positioning Accuracy for a SCARA Robot (CPCI-S收录) 会议
作者:  Tong, Yilong[1];  Huang, Yanjiang[1];  Yang, Lixin[1];  Li, Changsheng[1];  Zhang, Xianmin[1]
收藏  |  浏览/下载：3/0  |  提交时间：2019/04/11

©版权所有 ©2017 CSpace - Powered by CSpace