A method and system for suppressing skeletal shadows in digital chest X-ray images

Abstract

The invention is suitable for image processing and provides a method for suppressing bone shadows in digital X-ray chest X-ray images. The steps include: step A, receiving the input chest X-ray image and confirming the center line of each bone area in the chest X-ray image; B. Sampling the bone gray profile according to the center line of the bone area and recording the sampling point coordinates, and obtaining the bone gray profile image from the sampled bone gray profile; Step C, based on the sampling point coordinates and the bone A bone shadow image is obtained from the grayscale cross-sectional image, and then a bone shadow suppression image is obtained based on the chest X-ray image and the bone shadow image. The present invention does not require X-ray dual-energy subtraction equipment, does not need to use dual-energy subtraction images for modeling learning, and directly processes a single conventional X-ray chest X-ray image to achieve suppression of bone images in the chest X-ray image. Furthermore, the present invention uses smoothing and surface fitting technology to estimate bone shadow grayscale, which can effectively maintain the detailed structure in the input X-ray chest radiograph image.

Description

Technical field [0001] The invention belongs to the field of image processing, and in particular relates to a method and system for suppressing bone shadows in digital X-ray chest radiograph images. Background technique [0002] Plain chest X-ray film (referred to as chest film) is the basic imaging method for detecting lung nodules and diagnosing lung diseases. However, the anatomical structures in conventional chest radiographs overlap each other, and some small nodules and diseased tissues in the lungs may be missed due to the occlusion of ribs and clavicle. For some computer-aided diagnosis software for chest radiographs, it is also difficult to detect nodules that are obscured by the ribs and clavicle. Suppressing skeletal images in chest radiographs can solve the problem of overlapping images of anatomical structures, enhance the visibility of chest X-ray radiographs, and facilitate doctors to perform image interpretation and diagnosis and computer-aided diagnosis software...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method and system for suppressing bone shadows in digitized chest X-ray images, aiming to solve the problem that shadow suppression of chest X-ray images can only be realized under the dual-energy subtraction technology in the prior art. Problems causing increased radiation doses to patients

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