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深度学习在膝关节MRI图像分割中的研究进展
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作者 向煜航 孟滔 +1 位作者 刘佳奇 张杏林 《赣南医科大学学报》 2025年第1期68-73,共6页
随着人口老龄化程度的加重,以膝关节骨性关节炎(Knee osteoarthritis,KOA)为代表的慢性关节病发病率逐年升高。自动分割膝关节MRI图像可以显著提高诊断和治疗效率,减轻医师负担。传统的MRI图像分割技术存在步骤繁琐、精度低、泛化能力... 随着人口老龄化程度的加重,以膝关节骨性关节炎(Knee osteoarthritis,KOA)为代表的慢性关节病发病率逐年升高。自动分割膝关节MRI图像可以显著提高诊断和治疗效率,减轻医师负担。传统的MRI图像分割技术存在步骤繁琐、精度低、泛化能力差等问题。近年来,深度学习在医学图像分析领域展现了巨大的潜力和优势,在对膝关节MRI图像的分割中,骨骼分割的Dice相似系数(Dice similarity coefficient,DSC)达到了98%,且所有结构的DSC均>70%。本文综述了深度学习在膝关节MRI图像分割中的研究进展,着重讨论了在5类不同分割任务中,深度学习模型所取得的成果和面临的挑战。文献复习结果表明,膝关节分割研究在医学方面的发展已取得了显著进步,但要实现其在临床中的全面应用,还需要面临数据多样性、模型泛化能力、实时性和标准化等方面的挑战。 展开更多
关键词 膝关节 深度学习 图像分割 磁共振成像
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Attenuated niacin-induced skin flush response in individuals with clinical high risk for psychosis 被引量:3
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作者 Ranpiao Gan Yanyan Wei +9 位作者 Guisen Wu Jiahui Zeng Yegang Hu Lihua Xu Xiaochen Tang Xiaohua Liu Haichun Liu Tao Chen Jijun Wang Tianhong Zhang 《General Psychiatry》 CAS CSCD 2022年第2期92-100,共9页
Background Im paired sesitwity of he soin Mlush response bo miacin is one of the most rpicated findngs in patents with schizoprenia Howewer.prior studies have usaly focused on postonset psychusis,and ll is knowm about... Background Im paired sesitwity of he soin Mlush response bo miacin is one of the most rpicated findngs in patents with schizoprenia Howewer.prior studies have usaly focused on postonset psychusis,and ll is knowm about the dinical high-risk(CHR)phase of niacin senstity in psychosis Aims To proftle and compare the miacin flush responsge among CHR individuals(converters and non-coverters)patients with frstepso schinophrenia(FES)and healty controls(HCs).Methods Sensivily 1o ftour concentralions (0.1-0001M)of aqueous methylnicotinate was tested in 105 CHR individuals,57 patients with FES and 52 HCs.CHR individuals were further grouped as converters and non converters according to the 2-year follow-up outcomes.Skin flush response scores were rated on a 4-point scale.Results Of the 105 CHR individuals,21 individuals were lost during the study,leaving 84 CHR individuals;16(19.0%)converted to full psychosis at 2 years of fllow-up.Flush response scores identifed in the CHR samples were characterised as modest degree levels,intermediate between those of HC individuals and patients with FES.The flush responses in the CHR group mimicked the responses observed in the FES group at higher concentrations(0.01 M,0.1 M)and longer time points(15 min,20min);however,these became comparable vith the responses in the HC group at the shorter time points and at lower concentr ations.The converters exhibited lower mean flush response scores than the non-converters.Conclusions Attenuated niacin-induced flushing emerged during the early phase of psychosis.New devices should be developed and verified for objective quantification of skin responses in the CHR population. 展开更多
关键词 SKIN HIGH shorter
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Artificial intelligence-assisted niacin skin flush screening in early psychosis identification and prediction 被引量:1
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作者 Tao Chen Haichun Liu +4 位作者 Renfang Tian Ranpiao Gan Wenzuo Xu Tianhong Zhang Jijun Wang 《General Psychiatry》 CAS CSCD 2022年第2期76-78,共3页
Schizophrenia is a devastating mental disorder affecting 20 million people worldwide.Early diagnosis is crucial for disease management and improvement in prognosis,and diagnostic biomarkerscan serveasobjective indicat... Schizophrenia is a devastating mental disorder affecting 20 million people worldwide.Early diagnosis is crucial for disease management and improvement in prognosis,and diagnostic biomarkerscan serveasobjective indicators for the early screening of the disease.Based on the observation of diminished flush responses to niacin in patients with schizophrenia Horrobin proposed anoninvasive niacin skin flush screening for schizophrenia. 展开更多
关键词 diagnosis PROGNOSIS PREDICTION
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Human mobility and the infectious disease transmission:a systematic review
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作者 M.Naser Lessani Zhenlong Li +4 位作者 Fengrui Jing Shan Qiao Jiajia Zhang Bankole Olatosi Xiaoming Li 《Geo-Spatial Information Science》 CSCD 2024年第6期1824-1851,共28页
Recent decades have witnessed several infectious disease outbreaks,including the coronavirus disease(COVID-19)pandemic,which had catastrophic impacts on societies around the globe.At the same time,the twenty-first cen... Recent decades have witnessed several infectious disease outbreaks,including the coronavirus disease(COVID-19)pandemic,which had catastrophic impacts on societies around the globe.At the same time,the twenty-first century has experienced an unprecedented era of technological development and demographic changes:exploding population growth,increased airline flights,and increased rural-to-urban migration,with an estimated 281 million international migrants worldwide in 2020,despite COVID-19 movement restrictions.In this review,we synthesized 195 research articles that examined the association between human movement and infectious disease outbreaks to understand the extent to which human mobility has increased the risk of infectious disease outbreaks.This article covers eight infectious diseases,ranging from respiratory illnesses to sexually transmitted and vector-borne diseases.The review revealed a strong association between human mobility and infectious disease spread,particularly strong for respiratory illnesses like COVID-19 and Influenza.Despite significant research into the relationship between infectious diseases and human mobility,four knowledge gaps were identified based on reviewed literature in this study:1)although some studies have used big data in investigating infectious diseases,the efforts are limited(with the exception of COVID-19 disease),2)while some research has explored the use of multiple data sources,there has been limited focus on fully integrating these data into comprehensive analyses,3)limited research on the global impact of mobility on the spread of infectious disease with most studies focusing on local or regional outbreaks,and 4)lack of standardization in the methodology for measuring the impacts of human mobility on infectious disease spread.By tackling the recognized knowledge gaps and adopting holistic,interdisciplinary methods,forthcoming research has the potential to substantially enhance our comprehension of the intricate interplay between human mobility and infectious diseases. 展开更多
关键词 Human mobility GEOGRAPHY infectious diseases sexually transmitted diseases systematic review
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Taking the pulse of COVID-19:a spatiotemporal perspective 被引量:6
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作者 Chaowei Yang Dexuan Sha +33 位作者 Qian Liu Yun Li Hai Lan Weihe Wendy Guan Tao Hu Zhenlong Li Zhiran Zhang John Hoot Thompson Zifu Wang David Wong Shiyang Ruan Manzhu Yu Douglas Richardson Luyao Zhang Ruizhi Hou You Zhoua Cheng Zhong Yifei Tian Fayez Beaini Kyla Carte Colin Flynn Wei Liu Dieter Pfoser Shuming Bao Mei Li Haoyuan Zhang Chunbo Liu Jie Jiang Shihong Du Liang Zhao Mingyue Lu Lin Li Huan Zhou Andrew Ding 《International Journal of Digital Earth》 SCIE 2020年第10期1186-1211,共26页
The sudden outbreak of the Coronavirus disease(COVID-19)swept across the world in early 2020,triggering the lockdowns of several billion people across many countries,including China,Spain,India,the U.K.,Italy,France,G... The sudden outbreak of the Coronavirus disease(COVID-19)swept across the world in early 2020,triggering the lockdowns of several billion people across many countries,including China,Spain,India,the U.K.,Italy,France,Germany,Brazil,Russia,and the U.S.The transmission of the virus accelerated rapidly with the most confirmed cases in the U.S.,India,Russia,and Brazil.In response to this national and global emergency,the NSF Spatiotemporal Innovation Center brought together a taskforce of international researchers and assembled implementation strategies to rapidly respond to this crisis,for supporting research,saving lives,and protecting the health of global citizens.This perspective paper presents our collective view on the global health emergency and our effort in collecting,analyzing,and sharing relevant data on global policy and government responses,human mobility,environmental impact,socioeconomical impact;in developing research capabilities and mitigation measures with global scientists,promoting collaborative research on outbreak dynamics,and reflecting on the dynamic responses from human societies. 展开更多
关键词 Big Data Earth system EMERGENCY geospatial sciences EPIDEMICS applications
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