摘要
开展三维近距离治疗计划系统的研究。提出了基于图像的三维近距离治疗计划系统的实施方案 ,在SGI工作站上建立了计划系统的基本框架和窗口界面 ,重点研究和实现点源的插植剂量分布的计算 ,等剂量线的二维和三维显示 ,体积 剂量直方图对计划的评估等 。
Brachytherapy dose prescription and treatment playing lag behind the state of the art for external beam therapy.We have developed a computer program on a SGI Indigo2 graphics workstation to plan the loading or stereotactic implantation of radioactive seeds.The treatment planning system,using data from the pre treatment diagnostic CT scan or MRI scan,contours target areas on sequential images creating a 3 dimensional taget volume,and is based on a dose algorithm of TG 43 formalism.The treatment isodose contour is generated at each scanningplane,reconstructed sagittal and coronal views,and overlaid on the corresponding target contour for 3 dimensional coverage visualization.Volume dose histograms are generated for the target and neighboring normal structures.We also provide two orthogonal digitally reconstructed projected images identifying virtual source positions superimposed on for fluoroscopy guided loading applicators and sources.
出处
《中国医疗器械杂志》
CAS
2000年第5期254-259,共6页
Chinese Journal of Medical Instrumentation
