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MR image and CT image registration method and device, computer device and storage medium

A CT image and registration technology, applied in the computer field, can solve the problems of poor image registration effect and unsatisfactory image effect.

Pending Publication Date: 2019-07-05
JIANGNAN UNIV
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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a registration method for MR images and CT images, aiming to solve the problem that existing medical image registration methods still have poor registration effects on images with large deformations.
The technical problem that the registered image effect is not ideal

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  • MR image and CT image registration method and device, computer device and storage medium
  • MR image and CT image registration method and device, computer device and storage medium
  • MR image and CT image registration method and device, computer device and storage medium

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Embodiment Construction

[0043] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0044] It can be understood that the terms "first", "second" and the like used in the present application may be used to describe various elements herein, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first xx script could be termed a second xx script, and, similarly, a second xx script could be termed a first xx script, without departing from the scope of the present application.

[0045] In order to solve the technical problem that the existing medical registration method ha...

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Abstract

The invention is applicable to the field of computers, and provides an MR image and CT image registration method, which comprises the steps of obtaining an MR image and a CT image to be registered; generating a simulated CT image according to the MR image; determining a current displacement field according to the simulated CT image and a CT image to be registered; processing the current displacement field and the previous displacement field based on a differential homoembryonic algorithm to generate a superposition state displacement field; performing regularization processing on the superposition state displacement field to generate a smooth deformation field; generating a registered to-be-confirmed image according to the smooth deformation field and the simulated CT image; and until a preset condition is met, determining that the registered to-be-confirmed image is a registered image, otherwise, returning to the step of determining the current displacement field according to the analog CT image and the to-be-registered CT image to perform iteration processing. According to the registration method provided by the embodiment of the invention, the MR image is processed into the analog CT image, and then iterative optimization registration is carried out, so that the registration method also has a good registration effect on the image with relatively large deformation.

Description

technical field [0001] The invention belongs to the field of computers, and in particular relates to a registration method, device, computer equipment and storage medium for MR images and CT images. Background technique [0002] There are various imaging technologies for medical images, such as CT (Computed Tomography, computerized tomography) imaging and MR (Magnetic Resonance, nuclear magnetic resonance) imaging. When analyzing medical images, it is often necessary to compare and analyze multiple images of the same patient together, so as to obtain dynamic information such as the degree of lesion of the patient's lesions. When doing quantitative comparative analysis of different images, image registration is first required. [0003] In the prior art, the registration of medical images usually adopts the demons algorithm, which is a fully automatic non-rigid registration method based on grayscale information. Specifically, the algorithm uses the gray gradient information ...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T7/30G06K9/62
CPCG06T7/30G06T2207/10081G06F18/2411G06F18/214G06T5/94G06T5/70
Inventor 王子贤刘凡汪思瀚吴甜颖杨晨郑佳敏蒋亦樟钱鹏江
Owner JIANGNAN UNIV
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