Relevant Research On Visualization Based On VTK And Its Application In TPS

Radiotherapy treatment is used to cure malignancy. Before the radiotherapy treatment, doctors need to prepare the treatment plan first. Not only the tumor, the normal tissue and their spatial relation to the body, and dose field data should be described correctly but also the visualization of spatial dose distribution of the body should shown comprehensively in a perfect 3 dimensional TPS (Treatment Planning System).Relevant work in the dissertation was developed under the research and development frame of an accurate radiotherapy treatment system. The author explored the application approach of visualization techniques in the whole system, made a research on visualization and its relevant work in the system, and then realized a visualization prototype system applied in TPS, which had 2D and 3D visualization functions for medical images, target areas and dose distribution. In this dissertation, the author put forward an interface of data field to improve the effect and universality of visualization technique applied in TPS firstly, then brought forward and realized a new accurate area-filling algorithm based on the classical algorithm to produce the data of target area in TPS. Thirdly, the author validated the dose calculation model by exerting several automatic-modeling methods to guarantee the correctness of dose calculation results, and lastly realized visualization functions of 3D data field by using VTK and extended data-selecting visualization in TPS based on exploring two kinds of visualization methods to increase the instruct value of TPS in radiotherapy treatment.The work discussed in the dissertation is a good test system for the R&D group to continue researching key techniques in the accurate radiotherapy. At the same time it makes an attempt for developing our own accurate radiotherapy system.