| Jiang Ping,Guo Fuxin,Jiang Yuliang,Ji Zhe,Peng Ran,Sun Haitao,Fan Jinghong,Li Xu,Li Weiyan,Wang Junjie.3D-printing non-coplanar template assisted CT-guided 125Ⅰ seed implantation on pelvic recurrent cervical cancer[J].Chinese Journal of Radiological Medicine and Protection,2017,37(7):490-494 |
| 3D-printing non-coplanar template assisted CT-guided 125Ⅰ seed implantation on pelvic recurrent cervical cancer |
| Received:February 28, 2017 |
| DOI：10.3760/cma.j.issn.0254-5098.2017.07.003 |
| KeyWords:3D-printing non-coplanar tempalte Cervical cancer Seed implantation Brachytherapy Dosimetry |
| FundProject:首都临床特色应用研究与成果推广项目（Z151100004015171） |
| Author Name | Affiliation | E-mail | | Jiang Ping | Department of Radiation Oncology, Peking University Third Hospital, Beijing 100191, China | | | Guo Fuxin | Department of Radiation Oncology, Peking University Third Hospital, Beijing 100191, China | | | Jiang Yuliang | Department of Radiation Oncology, Peking University Third Hospital, Beijing 100191, China | | | Ji Zhe | Department of Radiation Oncology, Peking University Third Hospital, Beijing 100191, China | | | Peng Ran | Department of Radiation Oncology, Peking University Third Hospital, Beijing 100191, China | | | Sun Haitao | Department of Radiation Oncology, Peking University Third Hospital, Beijing 100191, China | | | Fan Jinghong | Department of Radiation Oncology, Peking University Third Hospital, Beijing 100191, China | | | Li Xu | Department of Radiation Oncology, Peking University Third Hospital, Beijing 100191, China | | | Li Weiyan | Department of Radiation Oncology, Peking University Third Hospital, Beijing 100191, China | | | Wang Junjie | Department of Radiation Oncology, Peking University Third Hospital, Beijing 100191, China | junjiewang_edu@sina.cn |
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| Abstract:: |
| Objective To investigate the accuracy of 3D-printing non-coplanar template (3D-PNCT) assisted 125Ⅰ seed implantation with CT guidance in the pelvic recurrent cervical between the pre-plan and post-plan dosimetric parameters. Methods Nine patients with pelvic recurrent cervical cancer received 125Ⅰ seed implantation under CT guidance assisted with 3D-PNCT. A pre-plan based brachytherapy treatment planning system (B-TPS) assisted with 3D-PNCT for seed needle depth, direction and angle was designed. The dosimetry parameters including homogeneity index (HI), dose of 90% target volume (D90), mPD, volume percent of 100%, 150% and 200% prescribed dose V100, V150 and V200 and organ at risk between the pre-plan and post-plan were compared. Results Total seeds number was 675 (median 44, 25-114) according to pre-plan, and 669 (median 47, 25-113) seeds were implanted actually. 138 needles need implant according to preplan, and 132 needles was implanted actually. The median angle deviation was 1.99°±2.94°(0°-13°). There was no significant difference of HI, EI and CI between per-and post-plan. The differences of D90, MPD, V100, V150 and V200 between pre-and post-plan were not significant. Conclusions The confidence of pre-plan and post-plan for 3D-PNCT assisted 125Ⅰ seed implantation in the pelvic recurrent cervical cancer could be accurately performed under CT guidance. |
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