Method and system for inhibiting bone shadows in digital X ray chest radiograph

Abstract

The invention is suitable for the field of image processing and provides a method for inhibiting bone shadows in a digital X ray chest radiograph. The method comprises the steps of: A, receiving an input chest radiograph, and determining a central line of each bone area in the chest radiograph; B, according to the central lines of the bone areas, carrying out bone gray section line sampling and recording coordinates of sampling points, and obtaining a bone gray section image by the sampled bone gray section lines; and C, according to the coordinates of sampling points and the bone gray section image, obtaining a bone shadow image, and then according to the chest radiograph and the bone shadow image, obtaining bone shadow inhibited image. According to the invention, an X ray dual energy subtraction device is not needed, and modeling learning using a dual energy subtraction image is not needed, the single general ray chest radiograph is processed, and bone shadow inhibition is realized for the chest radiograph; and furthermore, a smooth and curved surface fitting technology is utilized to estimate the bone shadow gray, and detailed structures in the input X ray chest radiograph can be effectively maintained.

Description

technical field [0001] The invention belongs to the field of image processing, in particular to a method and system for suppressing bone shadows in digital X-ray chest images. Background technique [0002] Chest X-ray plain film (abbreviated as chest film) is the basic imaging method for detecting pulmonary nodules and diagnosing lung diseases. However, the anatomical structures overlap each other in conventional chest radiographs, and some small nodules and lesions in the lungs may be missed due to the occlusion of the ribs and clavicles. Detection of nodules obscured by ribs and clavicles is also difficult for some computer-aided diagnosis software on chest radiographs. Suppressing bone images in chest X-rays can solve the problem of image overlap of anatomical structures, enhance the visibility of X-ray chest X-rays, and facilitate doctors to perform image interpretation and diagnosis and computer-aided diagnosis software for processing. [0003] Dual Energy Subtraction...

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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