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Dual-flat panel-based two-dimensional to three-dimensional medical image registering method and system

A medical image and image technology, applied in image analysis, image data processing, instruments, etc., can solve the problems of registration speed, registration accuracy and low registration success rate

Active Publication Date: 2011-10-19
江苏瑞尔医疗科技有限公司
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Problems solved by technology

[0004] The registration speed, registration accuracy and registration success rate of the existing 2D-3D image registration method used in the image guidance based on X-ray imaging technology are low, and need to be improved

Method used

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  • Dual-flat panel-based two-dimensional to three-dimensional medical image registering method and system

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Embodiment Construction

[0132] The core of the present invention is to generate a first DRR image library along the out-of-plane corner direction of the first imaging plane and a second DRR image library along the out-of-plane corner direction of the second imaging plane; The ray image is used as the registered image, and the DRR image in the first DRR image library is used as the reference image to estimate the in-plane translation parameters, in-plane rotation angle parameters and out-of-plane rotation parameters of the first X-ray image; The second X-ray image is used as the registered image, and the DRR image in the second DRR image library is used as the reference image to estimate the in-plane translation parameters, in-plane rotation angle parameters and out-of-plane rotation parameters of the second X-ray image respectively; Image registration results are obtained from the estimation results of parameters of the first X-ray image and the second X-ray image.

[0133] Firstly, the X-ray imaging...

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Abstract

The invention discloses a dual-flat panel-based two-dimensional to three-dimensional medical image registering method and a dual-flat panel-based two-dimensional to three-dimensional medical image registering system. The method comprises the following steps of: generating the three-dimensional image of an object to be imaged, and generating a first and a second data reception register (DRR) imagelibraries in the planar outer corner directions of a first imaging plane and a second imaging plane off line; acquiring the first and second X-ray images of the object to be imaged in the first imaging plane and the second imaging plane, respectively; estimating the position parameters of the first and second X-ray images with the DRR images in the first and second DRR image libraries generated off line, respectively; adjusting the three-dimensional image according to the parameter estimation results of the first and second X-ray images, respectively, and then generating the first and second DRR image libraries on line; and estimating the position parameters of the first and second X-ray images with the DRR images in the first and second DRR image libraries generated on line, respectively. By adopting the method and the system of the invention, the complexity of the image registration can be reduced, and the speed, the precision and the success ratio of registration can be improved.

Description

technical field [0001] The present invention relates to a medical image registration method and system, in particular to a double-plate-based 2D-3D (two-dimensional-three-dimensional) medical image registration method and system. Background technique [0002] Image-guided radiation therapy (IGRT) is the latest theory and technology of tumor radiation therapy and tumor radiosurgery developed gradually in the past decade, and is a milestone of modern radiation therapy. IGRT uses advanced imaging equipment and image processing methods to locate and track patients' lesions before and during treatment to achieve precise radiation therapy for tumors, reduce damage to normal tissues around tumors, and improve patient outcomes. IGRT is the basis for all modern emerging radiation therapy techniques such as stereotactic neuroradiosurgery (SRS), stereotactic body radiation therapy (SBRT), image-guided intensity-modulated radiation therapy (IG-IMRT), and image-guided IGRT core technolo...

Claims

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Application Information

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IPC IPC(8): G06T7/00
Inventor 付东山
Owner 江苏瑞尔医疗科技有限公司
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