Identification of early cancerous lesion of esophagus with endoscopic images by convolutional neural network

Esophageal cancer is less predictive than other diseases, and patients are usually diagnosed at an advanced stage, so effective treatment is usually too late. Therefore, this experiment proves that AI detects esophageal cancer. The diagnostic ability of the number of phases is expected to assist doctors in using endoscopy plus artificial intelligence to increase the accuracy of diagnosis of esophageal cancer. This study provided 936 images of esophageal cancer endoscopy as a training image, including 498 white light endoscopes (WLI) and 438 narrow-band imaging endoscopes (NBI) images. According to the esophageal cancerization process, it is divided into four types: metaplasia (Dysplasia), metaplasia and esophageal cancer (Dysplasia-ECA), and esophageal cancer (ECA). A Single Shot Multibox Detector (SSD) was constructed by Convolutional Neural Network (CNN), and 264 test images were prepared to evaluate the accuracy of the model diagnosis. We developed a system called DNN-CAD to identify neoplastic or hyperplastic colorectal polyps less than 5 mm. The system classified polyps with a PPV of 89.6%, and a NPV of 91.5%, and in a shorter time than endoscopists. This deep-learning model has potential for not only endoscopic image recognition but for other forms of medical image analysis, including sonography, computed tomography, and magnetic resonance images. The construction of an SSD system for detecting esophageal cancer can analyze stored endoscopic images with high sensitivity in a short time, but more training can improve the accuracy of diagnosis. The system can facilitate early detection in practice and thus have a better diagnosis in the future.