[1]祁朋远,缪洪涛,全红. 基于蒙特卡洛的FePt纳米团簇在X射线下的放射增敏性[J].中国医学物理学杂志,2018,35(2):125-130.[doi:DOI:10.3969/j.issn.1005-202X.2018.02.001]
 QI Pengyuan,MIU Hongtao,QUAN Hong. Radiosensitizing effect of FePt nanoparticle cluster under X-ray irradiation researched with Monte Carlo simulation[J].Chinese Journal of Medical Physics,2018,35(2):125-130.[doi:DOI:10.3969/j.issn.1005-202X.2018.02.001]
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 基于蒙特卡洛的FePt纳米团簇在X射线下的放射增敏性()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
35卷
期数:
2018年第2期
页码:
125-130
栏目:
医学放射物理
出版日期:
2018-02-08

文章信息/Info

Title:
 Radiosensitizing effect of FePt nanoparticle cluster under X-ray irradiation researched with Monte Carlo simulation
文章编号:
1005-202X(2018)02-0125-06
作者:
 祁朋远缪洪涛全红
 武汉大学物理科学与技术学院, 湖北 武汉 430072
Author(s):
 QI Pengyuan MIU Hongtao QUAN Hong
 School of Physics and Technology, Wuhan University, Wuhan 430072, China
关键词:
 FePt纳米颗粒蒙特卡洛Geant4团簇放射增敏性剂量增强比
Keywords:
 FePt nanoparticles Monte Carlo Geant4 cluster radiosensitizing effect dose enhancement ratio
分类号:
R811.1
DOI:
DOI:10.3969/j.issn.1005-202X.2018.02.001
文献标志码:
A
摘要:
 目的:使用蒙特卡洛程序Geant4研究FePt纳米团簇在X射线下的放射增敏性,并比较团簇大小、射线能量、纳米材料类型对放射增敏能力的影响。 方法:根据实验拍摄得到细胞(经过FePt处理)图片,设计单个纳米团簇模型和细胞纳米团簇模型。以剂量增强比作为放射增敏能力的评判标准,计算不同模型下FePt的放射增敏能力。 结果:从两种模型的结果均可得到Fe1Pt3纳米团簇的放射增敏能力优于Fe1Pt1纳米团簇,同时同一种纳米团簇在低能射线照射下的放射增敏性较佳;当纳米团簇的厚度增加时,可以观察到剂量增强比随着厚度增加达到饱和值。 结论:FePt纳米颗粒在团簇的情况下具有良好的放射增敏能力,进而验证了FePt纳米药物在临床上的应用前景。
Abstract:
 Objective To investigate the radiosensitizing effect of FePt nanoparticle cluster under X-ray irradiation with the use of Monte Carlo program Geant4 and compare the effects of cluster size, source energy and nanoparticle materials on the radiosensitizing effect. Methods Single nanoparticle cluster model and cell with nanoparticle cluster model were designed according to the images of cells processed with FePt nanoparticles. The dose enhancement ratio (DER) was used to evaluate the radiosensatizing effect and the DER of different models was calculated. Results The radiosensitizing effect of Fe1Pt3 nanoparticle cluster was superior to that of Fe1Pt1 nanoparticle cluster. Meanwhile, for the same nanoparticle cluster, the radiosensitizing effect was better under the irradiation of X-ray with lower energy. With the increasing thickness of nanoparticle cluster, DER gradually reached a saturated value. Conclusion The FePt nanoparticle cluster has desirable radiosensitizing effect, which verifies the clinical application of FePt nanomedicine.

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备注/Memo

备注/Memo:
 【收稿日期】2017-11-08
【基金项目】国家自然科学基金(10875092,31271511);医科达-武汉大
学医学物理教学科研基金(250000200)
【作者简介】祁朋远,硕士在读,研究方向:蒙特卡洛模拟、纳米材料放射增敏,E-mail:2015202020051@whu.edu.cn
【通信作者】全红,副教授,博士生导师,研究方向:放射治疗、医学影像,E-mail: 00007962@whu.edu.cn
更新日期/Last Update: 2018-01-29