Method for extracting lung lobe contour from DR image

Abstract

The invention discloses a method for extracting a lung lobe contour from a DR image. The method comprises the following steps: a representative template of a lung lobe contour is obtained through offline training; a chest DR image lung lobe area extraction system is initialized; according to the size of a DICOM image, the image is subjected to three-layer pyramid decomposition; a Gabor filter set is used to reconstruct the to-be-processed image, and the residual error of the reconstructed image after Gabor filter is converted into a black and white image; the black and white image is refined with a Zhan-Suen refinement algorithm; with each offline training template called as a convolution kernel operator, the contour image is subjected to convolution; a local optimal convolution value of the optimal possibility is filtered out of the convolution results and subjected to combined evaluation; and a lung lobe contour shape is generated by combining the most matching upper and lower templates and the most matching positions. The method improves the work efficiency and inspection precision of lung disease inspection by doctors, supports further deepening the informatization of tuberculosis monitoring, and facilitates popularization of regular resident infectious disease examination screening of tuberculosis.

Description

technical field [0001] The invention relates to the field of medical informatization, in particular to a method for extracting lung lobe contours in diagnosis assistance for large-scale screening of tuberculosis infectious diseases. Background technique [0002] DR film is a digital photographic image, which is the abbreviation of Digital Radiography. Chest DR film images are a substitute for traditional chest fluoroscopy imaging, which has high imaging resolution and low radiation. X-ray imaging is the main method of physical examination to screen for lung diseases, including lung inflammation, mass, tuberculosis, lung cancer, etc. Chest x-ray DR film uses different densities of human tissues to image differences under X-rays to observe lesions in areas with small differences in thickness and density. However, the structure of human tissue is complex. The thorax and abdominal cavity contain key organs of the human body, including various organs of high and low density. T...

AI Technical Summary

Problems solved by technology

This is because some lung cancers and tuberculosis are difficult to distinguish on imaging, and it is very easy to misdiagnose, mistreat or delay treatment clinically.

There are some clinical patients who obviously only have pulmonary tuberculosis, but are diagnosed with lung cancer by a single primary hospital based on an imaging examination, and even blindly started radiotherapy and chemotherapy, which caused serious harm to the patient's body.

On the contrary, there are also some patients who obviously have lung cancer combined with pulmonary tuberculosis, but are misdiagnosed as lung cancer, and are only treated as simple pulmonary tuberculosis.

Images