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

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, 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

Images