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Method and equipment for interactively registering medical three-dimensional image

A three-dimensional image and medical technology, applied in the field of medical image processing, can solve the problems of not considering bone tissue, large amount of calculation, slow calculation speed, etc.

Active Publication Date: 2015-07-01
NUCTECH CO LTD +1
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Problems solved by technology

Poor alignment of internal trabecular structures may occur since the internal structure of the bone tissue is not considered at all during surface model registration
The registration based on grayscale information takes into account the grayscale information of the whole image, but the calculation load is large and the calculation speed is slow.

Method used

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  • Method and equipment for interactively registering medical three-dimensional image
  • Method and equipment for interactively registering medical three-dimensional image
  • Method and equipment for interactively registering medical three-dimensional image

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Embodiment Construction

[0015] figure 1 A flow of a method 100 for interactive registration of medical three-dimensional images is shown. First in step 101, both the floating image and the reference image are displayed on an image display device such as a display screen of a computer. Then, based on the mutual information values ​​of multiple vertical slice images, the floating image is manually adjusted to pre-align it with the reference image. This manual adjustment can be performed, for example, by the user manipulating a position adjustment device, which is an input device for inputting a new position of the floating image, such as a mouse, keyboard, joystick, etc., to translate and / or rotate the image. The position refers to the pose of the 3D image in the 3D space. The floating image is the medical three-dimensional image to be registered. The multiple vertical directions are preferably three mutually perpendicular spatial directions commonly used in medical images—the transverse direction, ...

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Abstract

The invention discloses a method and equipment for interactively registering a medical three-dimensional image. The method for interactively registering the medical three-dimensional image includes that manually regulating the medical three-dimensional image based on the mutual information of the medical three-dimensional image and a reference image in several vertical space directions, and re-calculating the mutual information according to a preset time interval and / or regulating times in the regulating process; manually regulating the medical three-dimensional image based on the re-calculated mutual information to obtain an expected initial registration position; automatically and precisely registering the medical three-dimensional image and reference image based on the initial registration position, wherein the precise registration is performed through the mutual information value of the medical three-dimensional image and reference image in several vertical space directions.

Description

technical field [0001] The present invention relates to medical image processing, and more particularly, to the registration of medical three-dimensional images. Background technique [0002] During clinical application or medical research, it is often necessary to compare three-dimensional images, such as three-dimensional radiographic images of bone tissue. Such a three-dimensional radiological image is, for example, a spiral CT three-dimensional reconstructed image. Clinically, it is often necessary to compare the images of patients' diseased bones before and after treatment to evaluate the treatment effect. In medical special research, it is often necessary to compare the image of a certain bone of a patient with the image of the same bone of a normal person, hoping to find some pathological rules. [0003] Since the three-dimensional radiographic images of bone tissue have the following characteristics: the outer cortical bone is relatively smooth, and the internal bo...

Claims

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Application Information

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IPC IPC(8): G06T7/00
Inventor 张丽赵自然陈志强顾建平王朔
Owner NUCTECH CO LTD
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