[1]王道平,苑淑渝,戴光复,等.用热释光剂量学法和理论计算法研究125Ⅰ粒籽源的剂量分布[J].国际放射医学核医学杂志,2006,30(6):375-377.
　WANG Dao-ping,YUAN Shu-yu,DAI Guang-fu,et al.Study dose distribution of 125Ⅰ seed using measured and calculated[J].International Journal of Radiation Medicine and Nuclear Medicine,2006,30(6):375-377.
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《国际放射医学核医学杂志》[ISSN:1673-4114/CN:12-1381/R]

卷:
30
期数:
2006年第6期
页码:
375-377
栏目:
临床放射医学
出版日期:
1900-01-01

文章信息/Info

Title:
Study dose distribution of 125Ⅰ seed using measured and calculated
作者:
王道平1;  苑淑渝1;  戴光复1;  何培坤2;  刘强2
1. 300192 天津, 中国医学科学院放射医学研究所保健物理室;
2. 300100 天津, 天津南开医院胸外科
Author(s):
WANG Dao-ping1;  YUAN Shu-yu1;  DAI Guang-fu1;  HE Pei-kuen2;  LIU Qia2
1. Department of Health Physics, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China;
2. Department of Chest Surgery, Tianjin Nankai Hospital, Tianjin 300100, China
关键词:
热敏发光测定法; 模型; 理论; 放射测量术; 辐射剂量; 碘放射性同位素
Keywords:
Thermoluminescent dosimetry; Models;  theoretical; Radiometry; Radiation dosage; Iodine radioisotopes
分类号:
R144.1
摘要:
目的 研究实验模型中125Ⅰ粒籽的剂量分布。方法 采用热释光剂量学方法(TLD法)和美国医学物理学家协会43报告工作组(AAPM TG-43)推荐的理论计算公式(理论计算法)对125Ⅰ粒籽的径向剂量进行了研究,并对TLD法和理论计算结果进行比较。结果 当125Ⅰ粒籽活度为37 MBq,粒籽的径向距离分别为0.5、1.0、1.5和2 cm时,用TLD法测得的径向剂量率分别为3.47、0.87、0.38、0.21 eGy/h,理论计算法分别为3.874、0,952、0.394、0,216 eGy/h。结论 TLD法和理论计算法有较好的一致性,125Ⅰ粒籽源的径向剂量率随距离增加快速下降。
Abstract:
Objective To study the dose distribution of 125Ⅰ seeds in experiment phantom. Methods The dose distribution of 125Ⅰ seeds was performed by the thermolnminescence dosimetry (TLD) method and the dose calculation formula (calculation). The radial dose of 125Ⅰ seed was compared using measured and calculated result. Results When radioactivity of 125Ⅰ seed was 37MBq (1.OmCi) and the radial distance is 0.5, 1.0. 1.5 and 2cm, the TLD measured and theoretically calculated result is 3.47, 0.87, 0.38, 0.21 eGy/h and 3.874, 0.952, 0.394, 0.216 eGy/h respectively. Conclusions The TLD measured and theoretically calculated result were found to good agreement. The radial dose of 125Ⅰ seed is attenuated very apidly with radial distance.

参考文献/References:

1 王俊杰,修典荣,冉维强.放射性粒子组织间近距离治疗肿瘤.第二版,北京:北京大学出版社,2004.5.
2 Nath R, Anderson LL, Luxton G, et al. Dosimetry of interst-itial brachytherapy sounds:Recommendation of the AAPM Radia-tion Therapy Committee Task Group No.43. American Association of Physicists in Medicine. Med Phys, 1995, 22(2):209-234.
3 苑淑渝,马凤武,王道平,等.用热释光法测量32P球囊和103Pd支架在血管内的剂量分布.中华核医学杂志,2003,23(6):330.
4 Anagnostopoulos G, Baltas D, Karaiskos P, et al. Thennoluminescent dosimetry of the selectseed 125Ⅰ interstitial brachytherapy seed. Med Phys, 2002, 29(5):709-716.
5 Meigooni AS, Hayes JL, Zhang H, et al. Experimental and theoretical determination of desimetric characteristics of isoaid advantage 125Ⅰ brachythecapy source. Med Phys, 2002, 29(9):2152-2158.
6 Mobit P, Badragan I. Response of LiF-TLD micro-rods around 125Ⅰ radioactive seed. Phys Med Biol, 2003, 48(19):3129-3142.

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备注/Memo

备注/Memo:
收稿日期:2006-06-14。
基金项目:天津市自然科学基金资助项目(043608111)
通讯作者:王道平,E-mail:wanddaoping@yahoo.com
更新日期/Last Update: 1900-01-01