Ultrasound Training System Based on CT Image Simulation and Positioning

Abstract

The invention relates to an ultrasound training system based on CT (computed tomography) image simulation and positioning, the real-time performance of which is improved through GPU (graphics processing unit) acceleration-based realization of ultrasound image simulation and CT volume data rendering. In the system, a curved surface matching module is used for performing surface matching between read human body CT volume data and physical model data with a physical model serving as the standard, and for realizing elastic transformation of a curved surface by means of an interpolation method based on a thin plate spline; an ultrasound simulation probe pose tracking module is used for computing the pose of an ultrasound simulation probe with respect to the physical model in real time by means of a mark point tracking method, and for acquiring CT image slices at any angle according to a pose matrix; an image enhancement and ultrasound image simulation generating module is used for improving the vessel contrast of a CT image by means of a multiscale enhancement method, and for simulating the ultrasound image based on the CT volume data; and a fusion display module is used for rendering and displaying the CT volume data based on the acceleration of CUDA (compute unified device architecture), and for fusing and displaying an ultrasound simulation image and a three-dimensional CT image according to the acquired pose matrix.

Description

technical field [0001] The invention relates to an ultrasound training system based on CT image simulation and positioning, which is suitable for the field of medical ultrasound training. Background technique [0002] When ultrasound propagates in the human body, due to the differences in the acoustic properties of various tissues in the human body, the ultrasound will produce physical phenomena such as reflection, refraction, scattering, and Doppler frequency shift at the interface between two different tissues. The application of ultrasonic diagnostic equipment to receive these reflected and scattered signals can display various tissues and the morphology of their lesions. Combined with pathology and clinical medicine, physicians can make accurate diagnoses on the location, nature, and degree of dysfunction of lesions. [0003] In addition, because ultrasound has no radiation and fast imaging speed, it can be widely used in the guidance process of clinical minimally invasi...

AI Technical Summary

Problems solved by technology

[0005] 1. The computational complexity of the ultrasound image simulation method based on CT volume data is high, and it is difficult to meet the real-time requirements of medical ultrasound training;

[0006] 2. Since the accuracy of 3D volume data rendering and image fusion display is directly proportional to the complexity of the algorithm, when real-time performance is met, the 3D structure information of the image is incomplete and the display effect is blurred;

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