Thickness balancing method and device for breast image and mammography system

An equalization method and an equalization device technology, applied in the field of image processing, can solve the problems of increasing misdiagnosis rate, low breast image accuracy, slow segmentation speed, etc.

Active Publication Date: 2016-06-22
SHANGHAI UNITED IMAGING HEALTHCARE
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Problems solved by technology

[0005] In addition, for medical images with different doses, the accuracy of breast images obtained by existing se

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  • Thickness balancing method and device for breast image and mammography system
  • Thickness balancing method and device for breast image and mammography system
  • Thickness balancing method and device for breast image and mammography system

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Embodiment Construction

[0074] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways than those described here, and those skilled in the art can make similar extensions without departing from the connotation of the present invention. Accordingly, the present invention is not limited to the specific embodiments disclosed below.

[0075] As described in the prior art, due to the uneven thickness of the breast when the breast is compressed, the gray scale of the breast image used for diagnosis is uneven, especially the area near the breast edge is obviously darker than its adjacent area, and the gray scale of the breast edge ...

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Abstract

A thickness balancing method and device for a breast image. The thickness balancing method for the breast image includes the steps of: obtaining a breast image; filtering the breast image to obtain a low frequency breast image and a high frequency breast image; performing gray scale transformation on a preset area in the low frequency breast image to obtain a first image, a gray value of a preset area in the first image tending to be consistent with a gray value of a neighborhood, and the preset area referring to an area at a predetermined distance from an edge of the low frequency breast image; and reconstructing the first image and the high frequency breast image to generate a thickness-balanced breast image. The breast image after balancing which is obtained through the technical scheme of the invention has uniform gray scale while details of the breast image are not lost, satisfies actual clinical needs, the breast image after balancing is adopted to be diagnosed on a window level of a certain window width, and loss of edge information of the breast image does not occur, thereby lowering the rate of missed diagnosis, and improving the accuracy rate of diagnosis.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and device for equalizing the thickness of breast images, and a mammography system. Background technique [0002] With the development of computer science and information technology, medical imaging technology has also been developed rapidly, and various medical imaging systems are emerging. Full-field digital mammography (FFDM, full-field digital mammography) has been widely used in the screening and diagnosis of breast cancer. [0003] In the process of using FFDM to obtain medical images, due to the uneven thickness of the breast when the breast is compressed, the final breast image does not meet the actual clinical needs when displayed on the negative film, and the gray level of the breast image is uneven, such as: a certain distance from the edge of the breast The area of ​​the distance is obviously darker than the area adjacent to this area in the breast ...

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Application Information

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IPC IPC(8): G06T7/00
CPCG06T2207/10004G06T2207/30068
Inventor 陈皓周海华滕万里
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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