3D-printing non-coplanar template assisted 125I seed implantation for pelvic tumor: individual template design method
10.3760/cma.j.issn.0254-5098.2017.07.002
- VernacularTitle:3D打印非共面模板引导125I粒子组织间近距离治疗盆腔肿瘤个体化设计
- Author:
Haitao SUN
;
Lihong YAO
;
Junjie WANG
;
Fugen ZHOU
;
Yuliang JIANG
;
Zhe JI
;
Bo LIU
;
Fuxin GUO
;
Ran PENG
;
Jinghong FAN
- Keywords:
3D-printing;
Radioactive seed implantation;
Personalized non-coplanar template;
Dosimetry;
Pelvic tumor
- From:
Chinese Journal of Radiological Medicine and Protection
2017;37(7):485-489
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the dosimetric data between preoperative plans and postoperative verification in computed tomography (CT)-guided and 3D-printing non-coplanar templateassisted 125I seed implantation for pelvic tumor,and to explore the feasibility and accuracy of the personalized template designmethod.Methods A total of 51 patients registered from Dec 2015 to Dec 2016 who were applied with 3D-printing guided template assisted radioactive seed implantations in the hospital were included in this study.A prescribed dose of 110-160 Gy was adopted.3D-printing templates were designed and produced for 51 cases.The dosimetric parameters:Dg0,minimum peripheral dose (mPD),V100,V150,V200,conformal index (CI),external index (EI),and homogeneity index (HI) were compared between pre-and post-plans.Results 51 cases' templates were in place well during the operations.Compared with the preoperative planning,the postoperative D90,V100,V150,V200,CI,EI and HI differences had no statistical difference (P ＞ 0.05);mPD is larger than before (t =-2.96,P ＜ 0.05).Conclusions The main dosimetric parameters of postoperative verification were consistent well with the preoperative planning and have good accuracy,which could meet the clinical requirements.
