The Design Of Four-dimensional Modeling And Analysis System Of Cardiac Chamber Based On CT Image Processing

With the rapid development of medical imaging electronic equipment and computer image processing technology,medical imaging diagnosis and analysis technology has also been improved equivalently.Computer-assisted diagnostic techniques such as computer-based digital processing of medical images,extraction of key information parameters,or construction of specialized analysis systems are particularly important in today's medical field.This study aims at developing a Computer software simulation system to do medical image modeling and achieve4-dimensional reconstruction of every heart chambers,so as to build the four-dimensional dynamic display model groups about local myocardial momentum,which is able to do heart chamber physical analysis and the evaluation of the lesion.Heart disease is the main cause of human's non-accidental death.Considering the particularity of heart physiological structure and function,we couldn't do deeply invasive diagnosis or research.Although the heart's medical imaging and three-dimensional model simulation have provided convenience for diagnosis and research,the heart's medical imaging in two-dimensional plane and three-dimensional heart reconstruction model can't display the conditions' and physiological parameters' changes of each part of the heart comprehensively in real time.Based on heart's physiological particularity in real-time change in shape,four-dimensional simulation models has absolute advantage in the analysis and evaluation of cardiac functions:compared with traditional three-dimensional model,four dimensions can exhibit morphological changes of heart and simulate the beating of heart by dynamic models;on the cardiac parameter analysis,four dimensions can generate physiological data information at different times in the whole heartbeat cycle to achieve the comprehensive evaluation of heart physiological changes.Because of the deficiency of traditional cardiac imaging and model simulation,this paper designs a four-dimensional modeling and analysis system of cardiac chamber,which can realize a comprehensive and accurate motion simulation and functional evaluation of the patient's cardiac physiological condition.In the internal algorithm processing of the modeling system,the overall design is carried out according to thefour main processes of image reorganization,image segmentation,3D reconstruction and four dimensions.The method of image segmentation is used to realize the central axis correction method of image reconstruction,and the short axis section image of the target ventricle is acquired successfully.The image segmentation method based on regional growth is improved,and the method of automatic segmentation and human-computer interaction is used to obtain the myocardial edge information acquisition The accuracy and anti-noise of image segmentation are studied.Three-dimensional reconstruction method is established by using vector points to establish vector correlation.At the same time,a four-dimensional model with localized cardiac assessment function is obtained by transition model and color gradient processing.In the external interface design of the system,the manual correction interface,the three-dimensional reconstruction and the parameter extraction interface and the multi-group four-dimensional dynamic model with the platform display interface are provided in stages.The real-time feedback modeling effect and parameters,And in the final analysis platform to achieve a variety of special functions between the four-dimensional model of the joint display and contrast.This system successfully constructed the left ventricular four-dimensional reconstruction model of the patients after electroporation and evaluated the physiological condition through the myocardial momentum model and parameter analysis.It shows that the non-invasive and convenient four-dimensional modeling and evaluation of the heart chamber Effective and feasible.