欧美精品在线第一页,久久av影院,午夜视频在线播放一三,久久91精品久久久久久秒播,成人一区三区,久久综合狠狠综合久久狠狠色综合,成人av一区二区亚洲精,欧美a级在线观看

Chinese AI helps target head and neck tumors

Source: Xinhua| 2019-04-04 22:21:44|Editor: Li Xia
Video PlayerClose

GUANGZHOU, April 4 (Xinhua) -- Chinese researchers have developed an artificial intelligence (AI) medical tool that can help doctors target head and neck tumor cells faster and more accurately, according to an article published in the international journal Radiology.

Nasopharyngeal carcinoma is cancer that starts in the nasopharynx, which is the upper part of the pharynx behind the nose. Symptoms include lumps in the neck, nasal congestion, headache and hearing loss. About 70 percent of patients were in the later stages when they were diagnosed.

Due to the organ structure and its location in the human body, surgery is always difficult, and radiation therapy is the most common form of treatment.

Radiation, delivered by a linear accelerator, can kill tumor cells but has to pass through about 40 vital organs including the brainstem and eyeballs before reaching the nasopharynx.

"Insufficient radiation exposure may cause cancer recurrence, while excessive exposure may result in brain damage, hearing loss and other side effects," said first author of the article Lin Li, a researcher with the Sun Yat-sen University Cancer Center in Guangzhou.

Accuracy in tumor delineation on diagnostic images is key to radiation therapy. However, manual delineation is labor intensive and highly variable among doctors.

"Generally it will take a senior doctor two to three hours to target the tumor volume on a CT or MRI, but for inexperienced doctors, it will take more than six hours," said lead researcher Sun Ying.

Researchers from Sun Yat-sen University, along with computer experts from the Chinese University of Hong Kong, constructed an AI contouring tool that could automatically delineate the gross tumor volume on patient's MRI data.

In the study, researchers collected MRI data sets covering the nasopharynx from 1,021 patients between 2016 and 2017 and applied the AI tool with a 3D convolutional neural network, a new medical image segmentation technique. The AI was trained to automatically delineate the tumor volume with images in 818 patients and were defined by the consensus of two human experts.

In a competition with eight qualified doctors from renowned hospitals, the AI contouring accuracy reached 79 percent with 203 patients, taking 20 to 50 minutes per case, outperforming the accuracy of human competitors.

To further explore the clinical value of the research, two months after the competition, the eight doctors were asked to correct the AI-only automated contouring results, which is a process called AI assisted contouring. The result showed that it improved manual tumor contouring accuracy by 5 percent.

Reviewers of the journal Radiology were impressed by the sample size used in the paper, and commented that such an AI contouring tool for tumor targeting was "rare and challenging."

The AI contouring tool can help inexperienced doctors reach expert level, raising their work efficiency, which could have a positive impact on tumor control and patient survival, said Sun.

The AI tool will be put into clinical test in more places, Sun said.

TOP STORIES
EDITOR’S CHOICE
MOST VIEWED
EXPLORE XINHUANET
010020070750000000000000011100001379506991
主站蜘蛛池模板: 99国产精品永久免费视频 | 88国产精品欧美一区二区三区三| 午夜国产一区二区三区| 色午夜影院| 夜色av网站| 午夜av男人的天堂| 国产一区二区视频在线| 中文字幕一区2区3区| 国产性猛交| 久久精品一二三四| 日韩精品1区2区3区| 91精品国产综合久久国产大片| 免费毛片**| 4399午夜理伦免费播放大全| 国产伦精品一区二区三区免| 亚洲四区在线| 亚洲欧美v国产一区二区| 狠狠插狠狠爱| 欧美一级久久精品| 亚洲精品乱码久久久久久蜜糖图片| 日韩精品一区二区三区四区在线观看| 91一区二区三区视频| 88888888国产一区二区| 国产日韩欧美91| 欧美系列一区| 色综合欧美亚洲国产| 亚洲欧美国产日韩色伦| 欧美在线观看视频一区二区三区 | 色偷偷一区二区三区| 亚洲精品一品区二品区三品区| 国产午夜亚洲精品午夜鲁丝片 | 日本精品一二区| 久久人人97超碰婷婷开心情五月| 夜夜躁人人爽天天天天大学生| 日韩一区二区中文字幕| 欧美日韩精品中文字幕| 91精彩刺激对白露脸偷拍 | 国产精品99999999| 国产乱人乱精一区二视频国产精品| 国产91一区| 99爱精品在线| 国产精品v一区二区三区| 免费看农村bbwbbw高潮| 狠狠色噜噜狠狠狠四色米奇| 国产品久久久久久噜噜噜狼狼| 国产午夜精品一区理论片飘花| 99久久婷婷国产亚洲终合精品| 99精品久久久久久久婷婷| 国产一区二区三区午夜| 精品视频在线一区二区三区| 午夜毛片在线| 国内精品国产三级国产99| 日韩精品一区二区三区免费观看视频| 午夜性电影| 久久久久亚洲精品视频| 午夜激情综合网| 久久96国产精品久久99软件| 欧美日韩久久一区| 久久国产激情视频| 国产精品一区二区av麻豆| 激情久久综合网| 国产一区二区三区国产| 国产精品高潮呻吟三区四区| 性生交大片免费看潘金莲| 国产一区正在播放| 亚洲欧美视频一区二区| 日韩精品少妇一区二区在线看| 国产色婷婷精品综合在线播放| 久久综合伊人77777麻豆最新章节 一区二区久久精品66国产精品 | 淫片免费看| 日本一区午夜艳熟免费| 私人影院av| 中文字幕一区二区三区乱码| 欧美日韩一区二区三区免费| 久久婷婷国产综合一区二区| 精品国产伦一区二区三区免费| 日本一区二区三区在线看| 91视频一区二区三区| 国产日产精品一区二区| 久热精品视频在线| 国产亚洲欧美日韩电影网| 少妇厨房与子伦在线观看|