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Polarized Contradiction of the Female Image Created by Cao Yu --A Case Study of Fanyi
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作者 Zhang Peifang 《学术界》 CSSCI 北大核心 2015年第9期286-290,共5页
Cao Yu is an important and well-known playwright in the modern history of Chinese literature,who shapes many vivid and lively female images in his works,all of them presenting the split personality—on the one hand,th... Cao Yu is an important and well-known playwright in the modern history of Chinese literature,who shapes many vivid and lively female images in his works,all of them presenting the split personality—on the one hand,they are beautiful and honest,as good as angels;on the other hand,they are crazy and insane.This paper attempts to center on the familiar female image Fanyi to analyze the writing psyche and imagination of the writer and further reveal the deep logic and immanent contradiction of the female image as the intent tool. 展开更多
关键词 文学 文学创作 现代文学 文学作品
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Dynamic Investigations on the Wear Behavior of a 3D Revolute Joint Considering Time-Varying Contact Stiffness: Simulation and Experiment
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作者 Li Zhang Yining Fang +1 位作者 Guanghan Bai Junyong Tao 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2023年第6期230-246,共17页
The existence of the relative radial and axial movements of a revolute joint’s journal and bearing is widely known.The three-dimensional(3D)revolute joint model considers relative radial and axial clearances;therefor... The existence of the relative radial and axial movements of a revolute joint’s journal and bearing is widely known.The three-dimensional(3D)revolute joint model considers relative radial and axial clearances;therefore,the freedoms of motion and contact scenarios are more realistic than those of the two-dimensional model.This paper proposes a wear model that integrates the modeling of a 3D revolute clearance joint and the contact force and wear depth calculations.Time-varying contact stiffness is first considered in the contact force model.Also,a cycle-update wear depth calculation strategy is presented.A digital image correlation(DIC)non-contact measurement and a cylindricity test are conducted.The measurement results are compared with the numerical simulation,and the proposed model’s correctness and the wear depth calculation strategy are verified.The results show that the wear amount distribution on the bearing’s inner surface is uneven in the axial and radial directions due to the journal’s stochastic oscillations.The maximum wear depth locates where at the bearing’s edges the motion direction of the follower shifts.These find-ings help to seek the revolute joints’wear-prone parts and enhance their durability and reliability through improved design. 展开更多
关键词 Multibody dynamics 3D revolute joint Wear prediction Digital image correlation
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Male Images under Hegemonic Masculinity in The Joy Luck Club
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作者 路凯丽 《海外英语》 2021年第16期224-228,共5页
Amy Tan is a famous Chinese American woman writer.Her first novel The Joy Luck Club has gained success immediately after its publication.The book tells the stories about four Chinese mothers and four Chinese American ... Amy Tan is a famous Chinese American woman writer.Her first novel The Joy Luck Club has gained success immediately after its publication.The book tells the stories about four Chinese mothers and four Chinese American daughters,while the male im⁃ages are usually ignored by readers.This paper attempts to analyze male images through hegemonic masculinity,explore males’at⁃titude towards women,and discuss women’s reaction to men’s dominance.The paper criticizes men’s absolute dominance over women in old China and modern America.By analyzing the males’characteristics in old China and modern America,the paper concludes that men and women are equal in the society and women should recognize their position to protect themselves in patriar⁃chal society. 展开更多
关键词 the Joy Luck Club male image hegemonic masculinity WOMEN
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Inflammatory pseudotumor of the liver: 13 cases of MRI findings 被引量:8
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作者 Fu Hua Yan Kang Rong Zhou Ya Ping Jiang Wei Bin Shi Department of Radiology,Zhongshan Hospital,Medical Center of Fudan University (Former Shanghai Medical University),180 Fenglin Road,Shanghai 200032,ChinaDr.Fu Hua Yan graduated from Shanghai Medical University as a postgraduate in 1996,now an associated professor,a radiologist in chief specialized in the diagnosis of CT and MRI in hepatic diseases,having 22 papers published.She is the associated editor of the books Spiral CT and Body MRI. 《World Journal of Gastroenterology》 SCIE CAS CSCD 2001年第3期422-424,共3页
INTRODUCTIONInflammatory pseudotumor of the liver ,a rare benign lesion ,is often confused with the malignant tumors .Until 1998,less than 80 cases had been reported in the world [1,2].The accuracy of the pre-surgica... INTRODUCTIONInflammatory pseudotumor of the liver ,a rare benign lesion ,is often confused with the malignant tumors .Until 1998,less than 80 cases had been reported in the world [1,2].The accuracy of the pre-surgical diagnosis was low p[3,4] ,and very few materials on the diagnosis using dynamic MRI were reported [5-7] .We collected thirteen cases of inflammatory pseudotumor of the liver were collected and roved by pathology with MRI studies .Our purpose is to describe and analyze the MRI findings of this lesion and find out the valuable signs suggesting the diagnosis so as to avoid unnecessary operations. 展开更多
关键词 Magnetic Resonance Imaging ADULT Diagnosis Differential FEmale GRANULOMA Granuloma Plasma Cell Humans LIVER Liver Diseases male Middle Aged
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Metabolic Changes in Rats with Photochemically Induced Cerebral Infarction and the Effects of Batroxobin:A Study by Magnetic Resonance Imaging,~1H-and ^(31)p-Magnetic Resonance Spectroscopy 被引量:6
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作者 管兴志 吴卫平 +6 位作者 匡培根 匡培梓 高杨 管林初 李丽云 毛希安 刘买利 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2001年第1期59-67,共9页
Metabolic changes in rats with photochemically induced cerebral infarction and the effects of batroxobin were investigated 1, 3, 5 and 7 days after infarction by means of magnetic resonance imaging (MRI), 1H- and 31P-... Metabolic changes in rats with photochemically induced cerebral infarction and the effects of batroxobin were investigated 1, 3, 5 and 7 days after infarction by means of magnetic resonance imaging (MRI), 1H- and 31P-magnetic resonance spectroscopy (MRS). A region of T2 hyperintensity was observed in left temporal neocortex in infarction group and batroxobin group 1, 3, 5 and 7 days after infarction. The volume of the region gradually decreased from 1 day to 7 days after infarction. The ratio of NAA/Cho + Cr in the region of T2 hyperintensity in the infarction group was significantly lower than that in the corresponding region in the sham-operated group 3, 5 and 7 days after infarction respectively (P 展开更多
关键词 Animals Aspartic Acid BATROXOBIN Cerebral Infarction Magnetic Resonance Imaging male PHOTOCHEMISTRY Photosensitizing Agents Random Allocation RATS Rats Sprague-Dawley Rose Bengal
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On Subversion of Traditional Male and Female Images in Angela Cater's Modern Fairy Tales
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作者 陶羽洁 《海外英语》 2020年第5期192-197,201,共7页
Angela Carter is a famous contemporary British female writer with a variety of creative styles, famous for Gothic style, magic realism and new feminism. As one of the representatives of feminist writers in the last ce... Angela Carter is a famous contemporary British female writer with a variety of creative styles, famous for Gothic style, magic realism and new feminism. As one of the representatives of feminist writers in the last century, Angela Carter devoted her life to prosecuting patriarchal society from the perspective of women, calling on women to find themselves and realize personality libera-tion. At the same time, she is also a rational feminist, advocating the establishment of harmonious rather than antagonistic social re-lations with men and women.This article will mainly use text analysis and contrast and comparison to study the image of the male and female image in Angela Carter's modern fairy tale, and explore the reasons. On the basis of the text analysis, this paper will study the transformation of female image from the change of female status and personality. The laws of comparison and comparison will be used to explore the differences between men and women in the traditional fairy tale and the modern fairy tale of Angela Cart-er. The study found that in Carter's reconstruction of the fairy tale, the female image dares to break through the inherent status, and constantly launches the impact on the men's rights, seeking individual independence and self-liberation, and the male image is more diversified and more realistic and vivid. Through this study, it is hoped that the reader will have a deeper and more compre-hensive understanding of Angela Carter and his work, and find out the new feminist connotation contained in his work, thus ending the dualistic confrontation of the male and female and establishing a harmonious relationship. 展开更多
关键词 SUBVERSION TRADITIONAL male and female image Angela Carter MODERN FAIRY TALE
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Revolution CT能谱成像技术联合肺癌血清4项对肺癌患者的诊断及疗效评估价值分析 被引量:2
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作者 李飞 王超 +1 位作者 孙涛 李古郡 《临床和实验医学杂志》 2023年第5期528-533,共6页
目的探讨Revolution CT能谱成像技术联合肺癌血清4项对肺癌患者的诊断及疗效评估价值。方法前瞻性选择2019年6月至2022年6月来亳州市人民医院诊治的肺占位性病变患者70例,均给予肺癌血清4项及CT能谱成像检查,病理检查确诊的肺癌患者给... 目的探讨Revolution CT能谱成像技术联合肺癌血清4项对肺癌患者的诊断及疗效评估价值。方法前瞻性选择2019年6月至2022年6月来亳州市人民医院诊治的肺占位性病变患者70例,均给予肺癌血清4项及CT能谱成像检查,病理检查确诊的肺癌患者给予化疗治疗,化疗2个周期后肺癌患者再次行肺癌血清4项检查及CT能谱成像检查。分析70例患者的病理、血清、CT能谱成像检查及CA125+SCC+NSE+CYFRA21-1+CEA+CT能谱成像检查结果,分析血清及Revolution CT能谱成像检查对肺部占位性疾病的诊断效能,良恶性患者血清4项水平、CT能谱、灌注参数,分析55例肺癌患者化疗前后有效组、无效组的血清4项水平、CT能谱、灌注参数。结果70例患者的病理检查结果表明,良性15例,恶性55例。肺癌血清4项联合Revolution CT能谱成像检查、Revolution CT能谱成像检查对肺部占位性疾病的诊断阳性预测值、阴性预测值、敏感度、特异度、准确度明显较肺癌血清4项检测高,差异均有统计学意义(P<0.05)。恶性患者的血清SCC、NSE、CYFRA21-1、CEA明显较良性患者高,差异均有统计学意义(P<0.05)。良性患者的CT能谱参数明显恶性患者低,差异均有统计学意义(P<0.05);良性患者CT灌注成像参数中的血容量、血流量、毛细血管通透性明显较恶性组患者低,差异均有统计学意义(P<0.05)。55例肺癌患者化疗后,其中有效47例,无效8例。化疗前,有效组、无效组的血清SCC、NSE、CYFRA21-1、CEA水平、CT能谱、灌注参数比较,差异均无统计学意义(P>0.05);化疗后,有效组、无效组患者的血清SCC、NSE、CYFRA21-1、CEA水平、能谱CT参数及CT灌注参数中的血容量、血流量、毛细血管通透性较化疗前均降低,且有效组较无效组低,差异均有统计学意义(P<0.05)。结论Revolution CT能谱成像技术联合肺癌血清4项可用于肺癌的诊断,二者也可用于疗效评价。 展开更多
关键词 revolution CT能谱成像技术 肺癌血清4项 肺癌 诊断 疗效评价
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Heroic Woman Images Against Male Power in Tar Baby
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作者 唐婷 《海外英语》 2011年第8X期8-9,共2页
Ecofeminism is a theory that combines women's unfair condition with nature's overuse by human.It "argues that a strong parallel exists between the oppression and subordination of women in families and soc... Ecofeminism is a theory that combines women's unfair condition with nature's overuse by human.It "argues that a strong parallel exists between the oppression and subordination of women in families and society and the degradation of nature through the construction of differences into conceptual binaries and ideological hierarchies that allow a systematic justification of domination by subjects classed into higher-ranking categories over objects classed into lower-ranking categories" (Miao 184). Tar Baby is the fourth work of Tony Morrison which explores African-Americans' poor status, especially black women's. From ecofeminism's perspective, women and nature share same destiny. Being fed up with the bad condition, women has struggling against male world and tried to win their own happiness and identity, appealing to mutual respect and understanding. 展开更多
关键词 HEROIC WOMAN imageS male POWER TAR Baby
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A Case of Male Anorgasmia with Cerebral Infarction
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作者 Masato Shirai Yoshio Kawachi +5 位作者 Shigeto Yanada Hajime Watanabe Youichiro Toyonaga Sousuke Sugimura Toru Sakurai Makoto Fujime 《Open Journal of Urology》 2012年第3期151-152,共2页
Objective: The deficit of male orgasm is an unusual clinical condition. This is a case report on secondary male anorgasmia with cerebral infarction. Material and Method: The patient was a 55-year-old man who had suffe... Objective: The deficit of male orgasm is an unusual clinical condition. This is a case report on secondary male anorgasmia with cerebral infarction. Material and Method: The patient was a 55-year-old man who had suffered from male anorgasmia, acquired type. The patient had a normal erectile response, but ejaculated without any sensation of orgasm. The patient underwent an evaluation by a psychiatrist and an urologist trained in sexual medicine. Result: The results of physical, psychological, and laboratory examination were normal. Brain MRI revealed cerebral infarction at bilateral parietal lobes and frontal lobes. Conclusion: There is a possibility that these brain regions are related to male orgasmic dysfunction. 展开更多
关键词 male Anorgasmia Orgasmic DYSFUNCTION CEREBRAL INFARCTION BRAIN Imaging
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A Comparison Between Two Novels: La Dame aux Camille and Du Shiniang Sink the Box with Treasure Angryly
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作者 余敏军 《海外英语》 2019年第13期271-272,共2页
This article compared two novels:La Dame aux Camille and Du Shiniang Sink the Box with Treasure Angryly.The writing art style,the character image of the two novels,the male protagonist and the social background are di... This article compared two novels:La Dame aux Camille and Du Shiniang Sink the Box with Treasure Angryly.The writing art style,the character image of the two novels,the male protagonist and the social background are different.We can learn more about western culture and Chinese culture by comparing the two novels. 展开更多
关键词 the WRITING art style the character image the male PROTAGONIST the social background Du Shiniang Marguerite
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GE Revolution能谱成像定量参数在肺栓塞诊断中的应用
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作者 刘庆轲 《中国CT和MRI杂志》 2023年第12期72-74,共3页
目的分析GE Revolution能谱成像定量参数对肺栓塞(pulmonary embolism,PE)的诊断效能。方法回顾性选取2020年1月-2022年1月在本院接受GE Revolution CT扫描检查的42例PE患者临床资料为观察组,另选取同期接受GE lightspeed 64排螺旋CT检... 目的分析GE Revolution能谱成像定量参数对肺栓塞(pulmonary embolism,PE)的诊断效能。方法回顾性选取2020年1月-2022年1月在本院接受GE Revolution CT扫描检查的42例PE患者临床资料为观察组,另选取同期接受GE lightspeed 64排螺旋CT检查的50例PE患者为对照组。对比两组患者扫描图像质量、检查时间、肺动脉CT值、有效辐射剂量和背景噪声(BN),计算对比度噪声比(CNR)、信号噪声比(SNR),评估GE Revolution定量参数对PE的诊断价值。结果观察组图像质量包括1级40例(95.24%),2级1例(2.38%),3级1例(2.38%);对照组包括1级40例(80.00%),2级8例(16.00%),3级2例(4.00%);两组图像质量分级比较,差异具有统计学意义(P<0.05)。两组患者的噪声指标BN、SNR、CNR以及肺动脉干、左肺动脉、右肺动脉、胸大肌CT值比较,组间差异无统计学意义(P>0.05)。观察组检查时间短于对照组(3.35±1.30 vs 7.62±1.12,s),有效辐射剂量低于对照组(0.84±0.09 v s 1.95±0.74,mSv)(P<0.05)。结论GE Revolution CT和GE lightspeed 64排螺旋CT均可获取PE较高质量图像,从而有助于临床快速诊断PE,但GE Revolution CT可与提高图像质量等级,并减少扫描检查时间,降低有效辐射剂量。 展开更多
关键词 肺栓塞 CT GE revolution CT 图像质量 背景噪声 诊断
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颅脑CT灌注成像及磁共振成像在脑梗死患者中的应用 被引量:3
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作者 荆梅 顾欣欣 《中国实用神经疾病杂志》 2024年第1期43-47,共5页
目的分析颅脑CT灌注成像及磁共振成像对脑梗死患者的诊断价值。方法选取2022-03—2023-05在江苏省中西医结合医院就诊的80例疑似脑梗死患者为研究对象,对比分析GE Revolution CT颅脑灌注成像、磁共振成像及联合检查的敏感性、特异性、... 目的分析颅脑CT灌注成像及磁共振成像对脑梗死患者的诊断价值。方法选取2022-03—2023-05在江苏省中西医结合医院就诊的80例疑似脑梗死患者为研究对象,对比分析GE Revolution CT颅脑灌注成像、磁共振成像及联合检查的敏感性、特异性、准确性,制作3种影像学检查的受试者工作特征(ROC)曲线。结果根据患者病情和临床综合诊断确诊,80例疑似脑梗死患者中脑梗死阳性69例(86.25%),脑梗死阴性11例(13.75%)。3种影像学检查方法的灵敏度、准确率比较,从高到低依次为联合检查、GE Revolution CT颅脑灌注成像检查、磁共振成像检查,差异有统计学意义(P<0.05)。GE Revolution CT颅脑灌注成像检查、磁共振成像检查、联合检查诊断脑梗死的ROC曲线下面积(AUC)分别为0.8109、0.7688、0.8682。结论GE Revolution CT颅脑灌注成像与磁共振成像检查的联合应用,有利于提高脑梗死患者诊断的灵敏度、准确率及AUC水平。 展开更多
关键词 脑梗死 GE revolution CT 颅脑灌注成像 磁共振成像 灵敏度 准确率
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蚕蛹性腺图像在线采集与雌雄自动识别分选装置设计与优化
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作者 李光林 秦威 +2 位作者 郭峰 李丽 付兴兰 《农业工程学报》 EI CAS CSCD 北大核心 2024年第4期204-214,共11页
针对当前蚕蛹雌雄鉴别环节人工劳动强度大、蚕蛹雌雄识别分选装置准确率和效率不高、适用品种范围小等问题,根据雌雄蚕蛹性腺特征差异是区别不同品种蚕蛹雌雄的可靠依据,该研究设计了一种蚕蛹性腺图像在线采集与雌雄自动识别分选装置。... 针对当前蚕蛹雌雄鉴别环节人工劳动强度大、蚕蛹雌雄识别分选装置准确率和效率不高、适用品种范围小等问题,根据雌雄蚕蛹性腺特征差异是区别不同品种蚕蛹雌雄的可靠依据,该研究设计了一种蚕蛹性腺图像在线采集与雌雄自动识别分选装置。首先,在对蚕蛹基本物理特性参数大量统计的基础上,对振动排序上料机、蚕蛹输送滑轨和蚕蛹翻转拍照装置进行了结构设计与理论分析。在识别方法和计算机硬件条件不变基础上,对装置中蚕蛹排序输送螺旋倾角、滑轨倾角和转动棒带动蚕蛹旋转转速进行了优化设计,以提高装置的识别分选速度。并设计了以SIEMENS-S7-200SMART-ST30为控制器,基于激光、光电传感器检测的信息融合控制系统。分选装置工作性能优化结果为:螺旋倾角为15.62°,滑轨倾角为31.77°,转速为21.09 r/min,单粒蚕蛹平均分选时间为5.13 s,准确率为95.97%,破损率为0.07%。样机试验结果表明,在最优参数下,利用卷积神经网络的全新轻量级雌雄识别分类模型,单粒蚕蛹平均分选时间为5.03 s,分选准确率为96.47%,破损率为0.09%,满足蚕蛹雌雄识别分选实际应用要求。该蚕蛹性腺图像在线采集与雌雄自动识别分选装置能够实现蚕蛹自动排序上料、蚕蛹带性腺图像在线采集、自动识别与雌雄自动分选的一体化,提高了蚕蛹雌雄自动识别分选的效率和准确率。研究结果可为雌雄蚕蛹自动识别分选装置的研发提供理论依据和技术支持。 展开更多
关键词 机器视觉 在线采集 蚕蛹性腺图像 雌雄分选 翻转拍照装置 正交试验
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开展可见光—红外线—太赫兹波成像系列实验培养解决真实问题人才
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作者 曹硕 孔令茹 +1 位作者 杜增 李永庆 《物理与工程》 2024年第2期110-114,共5页
物理学的研究成果有力推动了三次工业革命的发展。进入新世纪以来,量子计算、低维物理、量子探测等现代物理研究成果正在促进第四次工业革命暨工业4.0向纵深发展。笔者在大学物理实验中规划布局多层次物理实验题目,以开展可见光-红外线... 物理学的研究成果有力推动了三次工业革命的发展。进入新世纪以来,量子计算、低维物理、量子探测等现代物理研究成果正在促进第四次工业革命暨工业4.0向纵深发展。笔者在大学物理实验中规划布局多层次物理实验题目,以开展可见光-红外线-太赫兹波探测与成像系列实验为例,介绍了学生深刻理解不同波段的电磁波在新旧产业领域应用性的异同。这一教学模式有利于学生掌握近现代物理成果与实验综合技能,培养他们成为解决新产业领域面临的真实问题的新理工科人才,从容面对新技术革命与职业选择。 展开更多
关键词 多层次物理实验 三次工业革命 工业4.0 可见光—红外线—太赫兹波成像
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数字影像文体演变:创新与挑战
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作者 李岩 《民族艺术研究》 CSSCI 2024年第3期31-39,共9页
随着技术与文化相互作用的深入,数字影像文体的演变展现出与技术物的共轭关系。这种关系的建立是技术与社会结构、文化形式相互作用的结果。其再生产机制强调了“模因—算法”驱动与“新技术形态”驱动两个维度。同时,数字影像文体的演... 随着技术与文化相互作用的深入,数字影像文体的演变展现出与技术物的共轭关系。这种关系的建立是技术与社会结构、文化形式相互作用的结果。其再生产机制强调了“模因—算法”驱动与“新技术形态”驱动两个维度。同时,数字影像文体的演变还是社会结构变动、劳动和生产关系重塑,以及文化形态变革的一部分,其以具体形态重新定义了权力结构和人类认知的框架。此外,数字影像文体也是马克思“通用智力”理论的现实案例,其演变进一步阐述了数字技术如何在全球范围内重新配置信息和行使权力,揭示了技术进步如何引领影像文体革命,并预示了未来社会文化动态的可能方向。 展开更多
关键词 数字影像文体 技术美学 社会变革 媒介考古
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基于OBE理念的教学方法改革与实践——以数字图像处理课程为例 被引量:1
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作者 孟祥超 陆金泉 +2 位作者 许高明 符冉迪 邵枫 《高教学刊》 2024年第18期48-51,共4页
数字图像处理作为大多数理工类和综合类院校的一门新兴交叉课程,该课程具有发展速度快、内容覆盖面广、理论难度大和实践要求高的特点。然而,其教学过程往往存在课程教学气氛单调、学生主动性、积极性不高;课程实验任务简单,学生解决复... 数字图像处理作为大多数理工类和综合类院校的一门新兴交叉课程,该课程具有发展速度快、内容覆盖面广、理论难度大和实践要求高的特点。然而,其教学过程往往存在课程教学气氛单调、学生主动性、积极性不高;课程实验任务简单,学生解决复杂问题能力培养不足,以及教学评价依赖期末考核,缺乏动态、完善的评价机制等问题。该文针对这些问题,提出基于OBE理念的数字图像处理教学方法,在“学导互促”教学、项目驱动式教学、动态评价的教学机制三个方面进行探索与实践,培养学生的创新和解决复杂工程问题的能力,提高本科生教学质量。 展开更多
关键词 数字图像处理 教学方法改革 OBE理念 项目驱动 动态评价
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1例青年男性津纳综合征影像学表现
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作者 贾柠瑞 潘巧红 +4 位作者 施浩 朱建平 姬建武 燕柳屹 李亚男 《中国医学影像技术》 CSCD 北大核心 2024年第6期949-950,共2页
患者男,26岁,体检超声发现膀胱后方薄壁无回声1年;先天性右肾缺如,未婚未育,无遗传及传染病史。查体:直肠指检于前列腺上方触及位置固定、边界清楚囊性包块,无触痛;双肾区叩击痛(-);外生殖器无特殊。实验室检查未见明显异常。经腹及经... 患者男,26岁,体检超声发现膀胱后方薄壁无回声1年;先天性右肾缺如,未婚未育,无遗传及传染病史。查体:直肠指检于前列腺上方触及位置固定、边界清楚囊性包块,无触痛;双肾区叩击痛(-);外生殖器无特殊。实验室检查未见明显异常。经腹及经直肠联合超声:右肾回声未及,左肾大小形态正常;右侧精囊内2.9cm×3.7cm×2.9cm不规则无回声,向前上突入膀胱,内透声好,可见稍强回声分隔,超声造影(contrastenhanced ultrasound,CEUS)见囊壁增强、囊内无增强(图1A);膀胱三角区未见右侧输尿管入口显示,膀胱右后方见管状无回声进入精囊囊肿内(图1B);能量多普勒(power Doppler,PD)仅见左侧输尿管排尿活动;经直肠双平面超声示右侧输精管盆腔段纡曲扩张,射精管前列腺部扩张,末端呈“鼠尾样”狭窄(图1C)。 展开更多
关键词 男性 泌尿生殖系统畸形 诊断显像
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Revolution CT冠状动脉成像与冠状动脉造影评估冠状动脉狭窄的一致性研究 被引量:15
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作者 温云 曾文兵 +2 位作者 李建蓉 王静 李翔 《西部医学》 2019年第8期1278-1282,共5页
目的探讨Revolution CT冠状动脉成像与冠状动脉造影(CAG)评估冠状动脉狭窄的一致性。方法选取2016年8月~2018年8月我院收治的冠状动脉粥样硬化性心脏病(CHD)患者262例为研究对象,所有患者均行CAG和Revolution CT检查。以CAG为金标准,冠... 目的探讨Revolution CT冠状动脉成像与冠状动脉造影(CAG)评估冠状动脉狭窄的一致性。方法选取2016年8月~2018年8月我院收治的冠状动脉粥样硬化性心脏病(CHD)患者262例为研究对象,所有患者均行CAG和Revolution CT检查。以CAG为金标准,冠状动脉狭窄程度50%、75%为界,从冠状动脉血管和冠状动脉血管节段两个方面评价Revolution CT检查的敏感性、特异性、阳性预测值、阴性预测值及准确性。结果以冠状动脉狭窄程度50%、75%为界,从冠状动脉血管分析,Revolution CT与CAG诊断的Kappa值分别为0.851、0.885(P<0.05),Revolution CT诊断的灵敏度为92.59%、92.91%,特异度为92.53%、95.56%,准确度为92.56%、94.27%,阳性预测值为93.26%、95.16%,阴性预测值为91.78%、93.48%;从冠状动脉血管节段分析,Revolution CT与CAG诊断的Kappa值分别为0.828、0.826(P<0.05),Revolution CT诊断的灵敏度为93.47%、96.88%,特异度为93.97%、87.21%,准确度为93.59%、95.39%,阳性预测值为98.13%、97.67%,阴性预测值为80.96%、83.47%。结论 Revolution CT能较准确地诊断不同程度的冠状动脉狭窄,与CAG诊断有较好的一致性,但Revolution CT诊断可能出现假阳性结果,故目前临床中仍不能完全替代CAG检查。 展开更多
关键词 revolution CT 冠状动脉成像 冠状动脉造影 冠状动脉狭窄 一致性
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印刷革命塑造教育现代性——基于文本、图像、空间的三维透视
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作者 黄希雯 董标 《教育学报》 CSSCI 北大核心 2024年第1期17-30,共14页
印刷革命是一场未得承认的革命。它在塑造教育现代性上的作用,亦未得到充分的承认、描述和估定。从印刷革命的代言者“印刷本”切入论题,在文本、图像、空间三维角度上分析,以接近论旨。印刷本产生了与“我”有别的规模化的“他者”世界... 印刷革命是一场未得承认的革命。它在塑造教育现代性上的作用,亦未得到充分的承认、描述和估定。从印刷革命的代言者“印刷本”切入论题,在文本、图像、空间三维角度上分析,以接近论旨。印刷本产生了与“我”有别的规模化的“他者”世界,人在阅读中建立主体性。印刷本的逻辑、线性叙事方式,铸就空前教育模式。印刷本化神奇为具体、化天启为对话,人的地位得以提高。图像,使知识变迁发生了丰富化、复杂化的质变(知识革命),理性在丰富、复杂的新知识基础上,加速成长。印刷本整齐划一的版式,使人的思维方式发生趋同性变异,成为教育制度化的思想基础和规章文本的技术保障。印刷本的规范和留白,给认识和反思提供崭新途径。印刷本塑造的教育现代性,最终完成了首次全球化教育革命,但也积孕了现代教育的困境与矛盾。 展开更多
关键词 印刷革命 教育现代性 文本 图像 空间
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Revolution CT肺动脉胸腹主动脉联合扫描对比剂注射方案研究 被引量:3
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作者 陈旭辉 薛蕴菁 《中国卫生标准管理》 2017年第6期92-94,共3页
目的评价Revolution CT不同对比剂注射方案肺动脉与胸腹主动脉一站式联合扫描的图像质量、辐射剂量,寻求最优化注射方案。方法按身体质量指数(BMI)分4组:将80例D-二聚体升高的不典型胸痛症状行肺动脉与胸腹主动脉CT血管造影的患者按身... 目的评价Revolution CT不同对比剂注射方案肺动脉与胸腹主动脉一站式联合扫描的图像质量、辐射剂量,寻求最优化注射方案。方法按身体质量指数(BMI)分4组:将80例D-二聚体升高的不典型胸痛症状行肺动脉与胸腹主动脉CT血管造影的患者按身体质量指数随机入组,A组BMI<23 kg/m^2,注射速率4 ml/s,对比剂剂量1 ml/kg,B组BMI<23 kg/m^2,注射速率4 ml/s,对比剂剂量0.8 ml/kg,C组BMI>23 kg/m^2,注射速率5 ml/s,对比剂剂量1 ml/kg,D组BMI>23 kg/m^2,注射速率5 ml/s,对比剂剂量0.8 ml/kg,每组各20例,评价各组肺动脉、胸腹主动脉各点客观图像评价指标CT值、噪声、SNR、CNR、CTDI、DLP及ED。并以4分法行图像主观质量评分。结果各组在CT值、噪声、CNR、SNR、CTDI、DLP及ED和主观评分上差异均无统计学意义(P>0.05)。结论对于BMI≤23 kg/m^2的患者注射速度4 ml/s,BMI>23 kg/m^2的患者注射速度5 ml/s,对比剂剂量0.8 ml/kg就可以满足诊断要求,降低对比剂用量,该检查方法具有临床可行性。 展开更多
关键词 revolution CT X线计算机 图像质量 对比剂
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