A dosimetric research on permanent radioactive ~(125)I seed plane implantation
- VernacularTitle:放射性~(125)I粒子平面永久插植布源剂量分布研究
- Author:
Junjie WANG
;
Suqing TIAN
;
Jinna LI
- Publication Type:Journal Article
- Keywords:
~(125)I seed;
Plane implantation;
Isodose distribution
- From:
Chinese Journal of Minimally Invasive Surgery
2005;0(12):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To establish the isodose curves and dose calculation models of()~(125)I seed plane implantation using the three-dimensional treatment planning system(3D-TPS). Methods The isodose cures of 1 000 cGy,3 000 cGy,6 000 cGy,9 000 cGy,12 000 cGy,15 000 cGy,and 20 000 cGy and dose calculation models of triangular,quadrilateral,hexagon,and dodecagon patterns of()~(125)I seed plane implantation were created using the 3D-TPS.The isocenter dose pattern of 0,0.5,1.0,1.5,2.0,2.5,3.0,and 4.0 cm from the plane center was calculated with 3D-CRT. Results The study showed that if doses were less than 10 Gy at 2.0 cm,2.5 cm,3.0 cm and 4.0 cm apart from the center of triangular,quadrilateral,hexagon,and dodecagon patterns and the distance was beyond 1 cm between seeds,there was a low dose region in the centeral point. Conclusions The study showed that the isodose distribution curves and dose calculation models in plane implantation were primarily established using the seed implantation 3D-TPS.
