目的分析并探索剪切波弹性成像技术在冻结肩疾病中诊断价值。方法采用回顾性病例对照研究方法,选择2019年1月至2020年1月在宝鸡高新医院就诊的临床诊断为冻结肩患者80例(病例组),以及同期无肩关节疼痛的并行肩关节超声检查、排除冻结肩...目的分析并探索剪切波弹性成像技术在冻结肩疾病中诊断价值。方法采用回顾性病例对照研究方法,选择2019年1月至2020年1月在宝鸡高新医院就诊的临床诊断为冻结肩患者80例(病例组),以及同期无肩关节疼痛的并行肩关节超声检查、排除冻结肩的患者356例,采用倾向性得分匹配方法得到80例患者(对照组)。病例组中男性23例,女性57例;年龄40~70岁,平均年龄54.89岁;体质量指数19.68~27.78 kg/m^(2),平均体质量指数24.20 kg/m^(2);有慢性病(包括糖尿病、高血压、冠心病在内的一种或几种)34例。对照组中其中男性23例,女性57例;年龄37~73岁,平均年龄53.17岁;体质量指数17.24~28.33kg/m^(2),平均体质量指数22.80kg/m^(2);有慢性病(包括糖尿病、高血压、冠心病在内的一种或几种)33例。采用单因素及多因素分析影响冻结肩发病的危险因素,并选择其中有统计学意义的因素进行受试者操作特性(ROC)曲线分析。结果病例组和对照组患者的临床资料具有可比性(P=0.727、0.724、1.000、0.873)。病例组肱二头肌长头肌腱、冈上肌腱、冈下肌腱、肩胛下肌腱、喙肱韧带和盂肱关节囊弹性模量均显著高于对照组(102.17kPa vs 86.20 kPa、124.96 kPa vs 84.98 kPa、168.28 kPa vs 100.29 kPa、91.67 kPa vs 72.07 kPa、118.76 kPa vs 102.58 kPa、66.64 kPa vs 34.66 kPa)(P<0.05)。病例组冈上肌腱(χ^(2)_(单因素)=16.450,P<0.001;χ^(2)_(多因素)=13.438,P<0.001)、冈下肌腱(χ^(2)_(单因素)=8.829,P=0.003;χ^(2)_(多因素)=6.829,P=0.013)和盂肱关节囊(χ^(2)_(单因素)=21.249,P<0.001;χ^(2)_(多因素)=18.381,P<0.001)的弹性模量值在单因素和多因素分析中均明显高于其对照组数值,而肱二头肌长头肌腱、肩胛下肌腱和喙肱韧带的弹性模量值在两组间未见明显差异。对冈上肌腱诊断、冈下肌腱诊断和盂肱关节囊诊断进行ROC曲线分析结果显示,冈上肌腱诊断[曲线下面积(AUC)_(网上肌健诊断)=0展开更多
Freeze-thaw damage is one of the main threats to the long time performance of the concrete pavement in the cold regions. This project aims to evaluate the influence of the freeze-thaw damages on pavement distresses un...Freeze-thaw damage is one of the main threats to the long time performance of the concrete pavement in the cold regions. This project aims to evaluate the influence of the freeze-thaw damages on pavement distresses under different climate conditions. Based on the Long-Term Pavement Performance （LTPP） data base, the freeze-thaw damage generated by four different kinds of climate conditions are considered in this project： wet-freeze, wet-non freeze, dry- freeze and dry-non freeze. The amount of the transverse crack and the joint spalling, along with the International Roughness Index （IR/） are compared among the test sections located in these four different climate conditions. The back calculation with the Falling Weight Deflectometer （FWD） test results based on the ERES and the Estimation of Concrete Pavement Parameters （ECOPP） methods are conducted to obtain concrete slab elastic modulus and the subgrade k-value. These two parameters both decrease with service time under freeze condition. Finally, MEPDG simulation is conducted to simulate the IR/development with service year. These results showed the reasonable freeze-thaw damage development with pavement service life and under different climate conditions.展开更多
文摘目的分析并探索剪切波弹性成像技术在冻结肩疾病中诊断价值。方法采用回顾性病例对照研究方法,选择2019年1月至2020年1月在宝鸡高新医院就诊的临床诊断为冻结肩患者80例(病例组),以及同期无肩关节疼痛的并行肩关节超声检查、排除冻结肩的患者356例,采用倾向性得分匹配方法得到80例患者(对照组)。病例组中男性23例,女性57例;年龄40~70岁,平均年龄54.89岁;体质量指数19.68~27.78 kg/m^(2),平均体质量指数24.20 kg/m^(2);有慢性病(包括糖尿病、高血压、冠心病在内的一种或几种)34例。对照组中其中男性23例,女性57例;年龄37~73岁,平均年龄53.17岁;体质量指数17.24~28.33kg/m^(2),平均体质量指数22.80kg/m^(2);有慢性病(包括糖尿病、高血压、冠心病在内的一种或几种)33例。采用单因素及多因素分析影响冻结肩发病的危险因素,并选择其中有统计学意义的因素进行受试者操作特性(ROC)曲线分析。结果病例组和对照组患者的临床资料具有可比性(P=0.727、0.724、1.000、0.873)。病例组肱二头肌长头肌腱、冈上肌腱、冈下肌腱、肩胛下肌腱、喙肱韧带和盂肱关节囊弹性模量均显著高于对照组(102.17kPa vs 86.20 kPa、124.96 kPa vs 84.98 kPa、168.28 kPa vs 100.29 kPa、91.67 kPa vs 72.07 kPa、118.76 kPa vs 102.58 kPa、66.64 kPa vs 34.66 kPa)(P<0.05)。病例组冈上肌腱(χ^(2)_(单因素)=16.450,P<0.001;χ^(2)_(多因素)=13.438,P<0.001)、冈下肌腱(χ^(2)_(单因素)=8.829,P=0.003;χ^(2)_(多因素)=6.829,P=0.013)和盂肱关节囊(χ^(2)_(单因素)=21.249,P<0.001;χ^(2)_(多因素)=18.381,P<0.001)的弹性模量值在单因素和多因素分析中均明显高于其对照组数值,而肱二头肌长头肌腱、肩胛下肌腱和喙肱韧带的弹性模量值在两组间未见明显差异。对冈上肌腱诊断、冈下肌腱诊断和盂肱关节囊诊断进行ROC曲线分析结果显示,冈上肌腱诊断[曲线下面积(AUC)_(网上肌健诊断)=0
文摘Freeze-thaw damage is one of the main threats to the long time performance of the concrete pavement in the cold regions. This project aims to evaluate the influence of the freeze-thaw damages on pavement distresses under different climate conditions. Based on the Long-Term Pavement Performance （LTPP） data base, the freeze-thaw damage generated by four different kinds of climate conditions are considered in this project： wet-freeze, wet-non freeze, dry- freeze and dry-non freeze. The amount of the transverse crack and the joint spalling, along with the International Roughness Index （IR/） are compared among the test sections located in these four different climate conditions. The back calculation with the Falling Weight Deflectometer （FWD） test results based on the ERES and the Estimation of Concrete Pavement Parameters （ECOPP） methods are conducted to obtain concrete slab elastic modulus and the subgrade k-value. These two parameters both decrease with service time under freeze condition. Finally, MEPDG simulation is conducted to simulate the IR/development with service year. These results showed the reasonable freeze-thaw damage development with pavement service life and under different climate conditions.
