中国医疗设备2018，Vol.33Issue(9)：86-87,105,3.DOI:10.3969/j.issn.1674-1633.2018.09.022
调强计划中计算网格大小对剂量与计算时间的影响
Study on the Dose and the Calculation Time with Difference Grid Sizes for Intensity Modulated Radiation Therapy Plan
摘要
Abstract
Objective To compare the difference of the dose and the calculation time among the three types grid size in the Pinnacle radiotherapy planning system. Methods From January 2016 to December 2016, 10 cases of nasopharyngeal carcinoma radiotherapy plans and 10 cases of cervical cancerwere plans were selected. The dose and the calculation time were recalculated and compared while the grid size were adjusted to 2 mm×2 mm, 2 mm×4 mm, 4 mm×4 mm. Two independent sample t tests were used to compare the differences with P＜0.05 as a statistical difference. Results The mean value of the calculation time in the grid size of 2 mm×2 mm was 371.52 s, 106.43 s in the 2 mm×4 mm, 44.44 s in the 4 mm×4 mm. There was no statistical difference for the dose among the three types grid size (P＞0.05). Conclusion The difference between 2 mm×2 mm and 2 mm×4 mm was small, while the calculation time in 2 mm×4 mm was reduced by 2/3. Therefore, the grid size of 2 mm×4 mm was recommended in clinical practice.关键词
调强放疗计划/计算网格/鼻咽癌放疗/放疗计划系统Key words
intensive radiotherapy plan/computational grid/radiotherapy for nasopharyngeal carcinoma/radiotherapy planning system分类
医药卫生引用本文复制引用
谢陈,汪代杰,张红艳,杨波,庞皓文,孙小杨..调强计划中计算网格大小对剂量与计算时间的影响[J].中国医疗设备,2018,33(9):86-87,105,3.基金项目
四川省医学科研青年创新课题(Q15020) （Q15020）
四川省卫生和计划生育委员会科研课题(18PJ202). （18PJ202）
