Isolated Pulmonary Nodules Characteristics Detection Based on CT Images

Abstract

Pulmonary nodules are the main pathological changes of the lung. Malignant pulmonary nodules will be transformed into lung cancer, which is a serious threat to human health and life. Therefore, the detection of pulmonary nodules is of great significance to save lives. However, in the face of a large number of lung CT image sequences, doctors need to spend a lot of time and energy, and in the detection process will inevitably produce the problem of false detection and missed detection. Therefore, it is very necessary for computer-aided doctors to detect pulmonary nodules. It is difficult to segment pulmonary nodules accurately and recognize the characteristics of pulmonary nodules in CT images. A complete set of semi-automatic lung nodule extraction and feature identification system is established, which is in line with the doctor's diagnosis process. A segmentation algorithm of pulmonary nodules based on regional statistical information is proposed to extract pulmonary nodules accurately. This is the first time that dynamic time warping algorithm is applied in the field of image processing, focusing on the lung nodule boundary. On this basis, the recursive graph visualization model is established to realize the visualization of boundary similarity. Finally, in order to accurately identify the characteristics of pulmonary nodules, a video similarity distance discrimination system is introduced to quantify the similarity between the nodules to be examined and the pulmonary nodules in the database. The experimental results show that the algorithm can accurately identify the normal shape, lobulated shape and lobulated shape of pulmonary nodules. The average processing speed is 0.58s/nodule. To some extent, it can reduce the misdiagnosis caused by experience and fatigue.

A Pulmonary Nodule Spiculation Recognition Algorithm Based on Generative Adversarial Networks

“…To verify the performance of the proposed algorithm, the following indicators are introduced for measurement [15]:…”

“…Shen et al [14] built an international deep hierarchical semantic dynamic network to classify pulmonary nodules. [15] by constructing a recurrence plot. Qiu et al [16] predicted potential burr features through machine learning.…”

Detection of Solitary Pulmonary Nodules Based on Brain-Computer Interface

“…Pulmonary nodules are the main pulmonary lesions. Malignant pulmonary nodules may be transformed into lung cancer, which is a serious threat to human health [1,2]. It needs many years of clinical practice for professional doctors to make accurate diagnosis.…”

Spiculation Sign Recognition in a Pulmonary Nodule Based on Spiking Neural P Systems

“…The spiculation sign is the feature of a pulmonary nodule. It is a radial and unbranched strip shadow extending from the boundary of a pulmonary nodule to the surrounding pulmonary parenchyma [ 2 ]. Its detection may cost more time and energy of doctors.…”

“…With the development of computer imaging technology, computer-aided diagnosis becomes possible for doctors and also has been successfully applied into the detection of pulmonary nodules: Qiu et al [ 2 ] establishes a model to detect solitary pulmonary nodules. Gavrielides et al [ 7 ] built a three-dimensional model to analyze the volume of pulmonary nodules.…”