MVCT image texture enhancement method based on double regular constraints

An image texture, CT image technology, applied in the field of medical image processing, can solve the problems of soft tissue edge blur, image resolution reduction, strong original signal dependence, etc., to enhance tissue edge information, denoising and enhancement, and has a wide range of applications. Effect
CN110599530AActive Publication Date: 2019-12-20XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2019-12-20

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Abstract

The invention discloses an MVCT image texture enhancement method based on double regular constraints, and mainly solves the problem that MVCT image enhancement cannot be carried out in the prior art.According to the scheme, the method comprises the following steps: 1) acquiring a plurality of KVCT and MVCT images from the same part of a human body; 2) normalizing the obtained CT image data set, and taking blocks from each pair of CT images to obtain a CT image block data set; 3) establishing a 13-layer MVCT image texture enhancement network, using the CT image block data set as training data,and optimizing the network by using a gradient descent algorithm to obtain a trained network; and 4) inputting a complete MVCT image into the trained network, and outputting the enhanced MVCT image.According to the invention, while the image texture is enhanced, the edge and details of the image can be well maintained, the image quality is improved, a doctor can conveniently read and diagnose the MVCT image, the focus position error is corrected, and the radiotherapy accuracy is ensured.
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Description

technical field

[0001] The invention belongs to the technical field of medical image processing, in particular to a method for MVCT image texture enhancement, which can be used to improve the CT image quality and the visual effects of imaging organs and tissues. Background technique

[0002] Megavoltage computed tomography (MVCT) and kilovolt computed tomography (KVCT) are two common forms of X-ray CT. Compared with KVCT, the voltage of the imaging tube of MVCT equipment is higher, which can find cancerous areas in tissues and organs, and is widely used in preoperative radiation therapy of tumors and cancers. However, MVCT is noisy and not suitable for tracking treatment. The current mainstream method is to use MVCT imaging before treatment, register with the KVCT image of the radiotherapy plan, and correct the error of the lesion position to ensure the accuracy of radiotherapy. As people pay more attention to CT radiation, the utilization rate of MVCT, which is less harmf...

Claims

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