|
|
|
| Effect of Different Curvature Fletcher of Uterine Tube on the Dose of Nomal Organs around Uterus |
| YU Hui, ZHANG Shu-xu, HAN Peng-hui, et al |
| Department of Radiotherapy Center, the Affiliated Tumour Hospital of Guangzhou Medical College, Guangzhou 510515 China |
|
|
|
|
Abstract Objective To study effect of different curvature Fletcher of uterine tube on the dose of major organs around uterus. The experimental data was provided to help doctors choose suitable Fletcher of uterine tube in afterloading treatment. Methods Fletcher of uterine tubes produced by Netherlands Nucletron Company had three kinds of curvature(15°, 30°,45°). We chose three clinical common treated lengths(4cm,6cm,8cm). These end points of three lengths of each tube were assumed at cervical orifice, The afterloading plans were designed by Nucletron GENIE TPS(V1.0), we recorded the coordinate and time of all dwelling points. Then anthropomorphic pelvic phantom was scanned by GE LightSpeed16 CT machine and the CT images were transferred to 3D visual after-loading brachytherapy simulating planning system (3DV-TPS). According the coordinate and time of all dwelling points from GENIE TPS, 3DV-TPS rebuilt the dose distribution of three lengths of each tubes. The absorbed dose of some nomal organs in different treatment condition was got from same coordinate. Results Even if the treated length of three tubes is same, the absorbed dose of some nomal organ was different, the difference of absorbed dose of bladder is biggest(13%~89%). bladder center(4%~38%), rectum(1%~12%), A point(1%~6%), B point(6%~16%), F point(4%~25%), ge outside lymph node (1%~13%), ge total lymph node (2%~16%), ovary(5%~18%), femur(3%~22%). Conclusion It is necessary to carefully choose suitable Fletcher of uterine tube before the afterloading treatment.
|
|
Received: 19 February 2011
|
|
|
|
|
|
| [1] |
SUN Zhiqiang, YU Jingping, WEI Guozhen, YIN Xiaowei, NI Xinchu, WANG jian, NIE Bin, LI Dongqing, NI Xinye, LIU Xi, SONG Xiangyun, SUN Suping. High-dose-rate brachytherapy plus external beam radiotherapy: A utilized modality for tracheobronchial obstructive granulation hyperplasia induced by self-expandable metallic stents[J]. , 2018, 27(4): 376-380. |
|
|
|
|
