Ultrasonic image and CT image registration method, device and equipment

Abstract

The invention belongs to the field of image data processing, and provides an ultrasonic image and CT image registration method, device and equipment. The method comprises the following steps: acquiring an ultrasonic image of a target object, and extracting a first contour feature of the target object in the ultrasonic image; performing area matching on the first contour feature and a plurality ofpreset second contour features, and determining at least one candidate CT slice; determining a target CT slice according to the similarity between the at least one candidate CT slice and the ultrasonic image; and determining a registration relationship between the ultrasonic image and the CT image according to the spatial position of the target CT slice in the CT image. The registration relation between the CT image and the ultrasonic image is determined only through the candidate CT slices, so that the number of CT slices needing registration calculation can be greatly reduced, the real-timeperformance of registration can be improved, the registration method is not limited to rich blood vessel parts, and the application range of the registration method can be widened.

Description

technical field [0001] The present application belongs to the field of image processing, and in particular relates to a registration method, device and equipment for ultrasonic images and CT images. Background technique [0002] In recent years, medical image-guided percutaneous renal surgery has gradually become the preferred method for establishing surgical channels in percutaneous nephrolithotomy due to its advantages of less creativity, fewer complications, and preservation of renal function. important means. Clear and real-time medical imaging technology can effectively improve the accuracy of intraoperative puncture and reduce the number of repeated punctures. Ultrasound images have the characteristics of strong real-time performance and low inspection cost, but low spatial resolution and small field of view, while CT images have the characteristics of high resolution. Important research directions for precision and real-time performance. [0003] The current ultras...

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Problems solved by technology

[0004] In view of this, the embodiment of the present application provides a registration method, device and equipment for ultrasound images and CT images, so as to solve the problem that the registration of ultrasound images and CT images in the prior art is limited to parts with rich blood vessel features. And the problem of low real-time performance in the registration process

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