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B-mode and Elastic Bimodal Ultrasound Achilles Tendon Image Stitching Method

An image stitching and dual-modal technology, which is applied in image analysis, image enhancement, and image-to-image conversion, can solve problems such as evaluation of the severity of Achilles tendon diseases that are difficult for doctors, and achieve the effect of helping diagnosis and treatment evaluation

Active Publication Date: 2019-12-06
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult for doctors to quickly and accurately make a comprehensive assessment of the severity of Achilles tendon disease, especially in the presence of multiple lesions

Method used

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  • B-mode and Elastic Bimodal Ultrasound Achilles Tendon Image Stitching Method
  • B-mode and Elastic Bimodal Ultrasound Achilles Tendon Image Stitching Method
  • B-mode and Elastic Bimodal Ultrasound Achilles Tendon Image Stitching Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as figure 1 As shown, a B-type and elastic dual-mode ultrasonic Achilles tendon image stitching method includes the following steps:

[0055] Step 1: Coarse registration of B-mode ultrasound images: Calculate the similarity measure of rigid registration based on the boundary vector field, and maximize the similarity measure of the rigid registration through particle swarm optimization algorithm to realize two B-mode ultrasound Achilles tendons Coarse registration of images;

[0056] Step 2: Fine registration of B-mode ultrasound images: use the B-spline free-form deformation model or differential homeomorphism model to perform non-rigid registration on the two B-mode ultrasound Achilles tendon images that have undergone rough registration to achieve fine registration ;

[0057] Step 3: Elastic ultrasound image registration: use the same spatial transformation relationship as the B-mode ultrasonic Achilles tendon image registration to register two elastic ultrasou...

Embodiment 2

[0082] Embodiment 2 has 5 steps in total, of which steps 1, 3, 4, and 5 are the same as the corresponding steps of Embodiment 1. Step 2 is: perform non-rigid registration on the B-type image to achieve fine registration. The technology used is to Diffeomorphism model.

[0083] In the step 2, the method of using the logarithmic diffeomorphism model to realize fine registration consists of the following specific steps:

[0084] Step 2-1: The target energy function of the algorithm of log diffeomorphism is:

[0085]

[0086] In the formula, u is the update field, s is the deformation;

[0087] Step 2-2: Set the initialization displacement field v;

[0088] Step 2-3: Calculate the deformation s=exp(v), and obtain the corresponding update field u by minimizing the target energy function;

[0089] Step 2-4: update the displacement field v, v←u+v;

[0090]Step 2-5: Do a Gaussian convolution on the update field u: u←K diff *u;K diff is a Gaussian convolution kernel;

[0091]...

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Abstract

The present invention discloses a B-type and elastic double-mode ultrasonic tendo calcaneus image splicing method. The method comprises: providing a new similarity measurement with rigid registration based on a boundary vector field, and maximizing the measurement to realize the rough registration of two B-type ultrasonic tendo calcaneus images through a particle swarm optimization algorithm; performing non-rigid registration of the B-type images to realize fine registration, wherein the applied technology is a B-spline free form deformation model or an index diffeomorphism model; employing the same space conversion relation as the space conversion relation when the B-type image registration, and performing registration of the two elastic ultrasonic tendo calcaneus images; employing a weighted average method to perform image fusion of the two B-type and two elastic images; and finally, performing splicing of the multiple ultrasonic images of a plurality of tendo calcaneus sections, and respectively generating the panorama of the B-type and elastic ultrasonic images. The B-type and elastic double-mode ultrasonic tendo calcaneus image splicing method can accurately splice multiple B-type and elastic ultrasonic maps to provide the double-mode panorama of the tendo calcaneus so as to facilitate the diagnosis and the treatment assessment of the tendo calcaneus damaging.

Description

[0001] Technical field [0002] The invention relates to an image splicing method, in particular to a B-type and elastic dual-mode ultrasonic Achilles tendon image splicing method, which belongs to the technical field of digital image processing. Background technique [0003] Achilles tendon (Achilles tendon, AT) is the longest and strongest tendon in the human body. The main function of the Achilles tendon is to flex the calf and the plantar flexion of the foot, and the realization of running and jumping depends on the Achilles tendon. Accurate diagnosis of the location and degree of Achilles tendon injury is an important basis for formulating effective treatment plans and rehabilitation evaluation. B-mode ultrasound has the advantages of real-time convenience, no ionizing radiation, and low cost, so it is of great application value in Achilles tendon examination. Elastic ultrasound (sonoelastography, SE) is a new technology that uses ultrasound to measure tissue elasticity...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T3/40G06T7/32
CPCG06T3/4038G06T2207/10132G06T2207/20221G06T2207/30004
Inventor 张麒索静峰
Owner SHANGHAI UNIV
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