目的评价MRI 3D T2-SPACE诊断大脑中动脉及基底动脉狭窄的价值。方法选取2019年11月至2020年10月在南京医科大学附属淮安第一医院就诊的40例脑血管狭窄患者为研究对象,选取符合研究要求的大脑中动脉及基底动脉共120根。在入院1周内完成...目的评价MRI 3D T2-SPACE诊断大脑中动脉及基底动脉狭窄的价值。方法选取2019年11月至2020年10月在南京医科大学附属淮安第一医院就诊的40例脑血管狭窄患者为研究对象,选取符合研究要求的大脑中动脉及基底动脉共120根。在入院1周内完成颅颈动脉MRI 3D T2-SPACE和数字减影血管造影(DSA)检查,分别评估动脉狭窄程度。按狭窄程度分成轻度(1%~49%)、中度(50%~69%)、重度(70%~99%)和闭塞(100%),和金标准DSA检查对照,计算灵敏度、特异度,并分析MRI 3D T2-SPACE和DSA诊断结果的一致性。结果MRI 3D T2-SPACE诊断大脑中动脉及基底动脉狭窄/闭塞的灵敏度、特异度结果如下,轻度狭窄分别为90.0%、96.4%,中度狭窄分别为77.8%、98.2%,重度狭窄分别为96.7%、97.8%,闭塞分别为87.5%、100.0%。MRI 3D T2-SPACE与DSA检查诊断大脑中动脉及基底动脉轻、中、重度狭窄及闭塞的一致性分别为0.760、0.760、0.934、0.929。结论MRI 3D T2-SPACE能够较准确地评估大脑中动脉及基底动脉狭窄程度,特别是对重度狭窄及闭塞的诊断与DSA检查结果高度一致,作为血管检查的一种全新技术,其将会在临床发挥重要作用。展开更多
目的探讨T_2 star mapping、T_1 images与3D DESS融合伪彩图在关节软骨损伤中的诊断价值。方法对26例关节软骨损伤患者行T_2 star mapping、T_1 images和3D DESS扫描,并将T_1 images、T_2 star mapping与3D DESS图像融合,评价患者股骨...目的探讨T_2 star mapping、T_1 images与3D DESS融合伪彩图在关节软骨损伤中的诊断价值。方法对26例关节软骨损伤患者行T_2 star mapping、T_1 images和3D DESS扫描,并将T_1 images、T_2 star mapping与3D DESS图像融合,评价患者股骨、胫骨、髌骨关节软骨损伤程度并与关节镜结果对比,计算融合伪彩图诊断软骨损伤的特异性、敏感性及与关节镜诊断结果一致性。结果 T_1 images-3D DESS融合伪彩图诊断关节软骨损伤的敏感度、特异度及Kappa值分别为92.8%、93.0%、0.769,T_2 star mapping-3D DESS融合伪彩图诊断关节软骨损伤的敏感度、特异度及Kappa值分别为91.4%、94.2%、0.787。结论 T_2 star mapping、T_1 images与3D DESS融合伪彩图在关节软骨早期损伤评价上优于关节镜。展开更多
Objective Io evaluate changes in morphology of the cesarean scar and uterus between one and two years after cesarean section using high-resolution,three dimensional T2-weighted sampling perfection with application opt...Objective Io evaluate changes in morphology of the cesarean scar and uterus between one and two years after cesarean section using high-resolution,three dimensional T2-weighted sampling perfection with application optimized contrast using diflerent flip angle evolutions Magnetic Resonance Imaging(3DT2w SPACE MRI).Methods This prospective study was performed to investigate morphological changes in the cesarean scars and uterus from one to two years after cesarean section using high-resolution,3D T2w SPACE MRI.The healthy volunteers having no childbearing history were recruited as the controls.All data were measured by two experienced radiologists.All data with normal distribution between the one-year and two-year groups were compared using a paired-sample t test or independent t test.Results Finally,46 women took a pelvic MR examination one year after cesarean section,and a subset of 15 completed the same examination again after two years of cesarean section.Both the uterine length and the anterior wall thickness after two years of cesarean section(5.75±0.46 and 1.45±0.35 cm)were significantly greater than those measured at one year(5.33±0.59 and 1.25±0.27 cm)(t=-2.363 and-2.175,P=0.033 and 0.048).No significant difference was shown in myometrial thickness two years after cesarean section(1.45±0.35 cm)with respect to the control group(1.58±0.21 cm,P=0.170).Nine women who underwent MRI twice were considered to have scar diverticula one year after cesarean section,and still had diverticula two years after cesarean section.The thickness,height,and width of the uterine scar showed no significant change from one to two years(all P>0.05).Conclusions 3D T2w SPACE MRI provides overall morphologic details and shows dynamic changes in the scar and the uterus between one and two years after cesarean section.Scar morphology after cesarean section reached relatively stable one year after cesarean section,and uterine morphology was closer to normal two years after cesarean section.展开更多
目的:研究MRI 3D CUBE T_(2)序列检查在踝关节外伤患者韧带损伤诊断中的价值。方法:选择2020年4月—2023年4月于白银市第一人民医院就诊的226例踝关节外伤拟行手术术前患者作为研究对象,按照不同检查方式将患者分为观察组(n=126)与对照...目的:研究MRI 3D CUBE T_(2)序列检查在踝关节外伤患者韧带损伤诊断中的价值。方法:选择2020年4月—2023年4月于白银市第一人民医院就诊的226例踝关节外伤拟行手术术前患者作为研究对象,按照不同检查方式将患者分为观察组(n=126)与对照组(n=100)。观察组采用MRI 3D CUBE T_(2)序列检查,对照组采取常规MRI检查。比较两组患侧、健侧距腓前韧带测量结果、诊断效能。结果:两组患侧、健侧距腓前韧带宽度及厚度比较,差异无统计学意义(P>0.05)。观察组Ⅰ级踝关节外伤患者韧带损伤诊断准确度、敏感度、特异度、阳性预测值、阴性预测值高于对照组,Ⅱ级患者准确度、敏感度、阴性预测值高于对照组,Ⅲ级患者准确度、特异度、阳性预测值高于对照组,差异有统计学意义(P<0.05)。结论:MRI 3D CUBE T_(2)序列检查踝关节外伤患者韧带损伤诊断效能高于常规MRI检查,可作为治疗效果评价及康复治疗的重要依据。展开更多
目的:探讨MRI 3D CUBE T2序列检查在踝关节外侧韧带损伤诊断中的应用价值。方法:选取2022年1月至2024年2月本院收治的81例疑似踝关节外侧韧带损伤患者,回顾性分析其临床资料,均接受MRI常规二维序列及MRI 3D CUBE T2序列扫描,以关节镜检...目的:探讨MRI 3D CUBE T2序列检查在踝关节外侧韧带损伤诊断中的应用价值。方法:选取2022年1月至2024年2月本院收治的81例疑似踝关节外侧韧带损伤患者,回顾性分析其临床资料,均接受MRI常规二维序列及MRI 3D CUBE T2序列扫描,以关节镜检查结果为金标准,计算两种检查方式的图像质量及诊断效能。结果:本组81例疑似患者,经关节镜检查证实阳性53例,阴性28例。以关节镜检查结果为金标准,MRI 3D CUBE T2序列检查对踝关节外侧韧带损伤的诊断敏感度、特异性、准确度、阳性预测值、阴性预测值及正确指数均高于常规二维序列,假阳性率、假阴性率低于常规二维序列(P<0.05)。一致性分析发现,MRI 3D CUBE T2序列检查结果与关节镜检查结果之间的一致性Kappa值为0.744,一致性处于较高水平,高于常规二维序列的Kappa值0.572。3D CUBE T2序列扫描图像的边缘清晰度评分高于常规二维序列,运动伪影及模糊程度评分低于常规二维序列(P<0.05)。结论:MRI 3D CUBE T2序列扫描可清晰显示踝关节外侧韧带损伤形态学改变,图像清晰,可有效提高诊断效能,减少漏诊、误诊发生,为临床诊疗提供客观的影像学依据。展开更多
文摘目的评价MRI 3D T2-SPACE诊断大脑中动脉及基底动脉狭窄的价值。方法选取2019年11月至2020年10月在南京医科大学附属淮安第一医院就诊的40例脑血管狭窄患者为研究对象,选取符合研究要求的大脑中动脉及基底动脉共120根。在入院1周内完成颅颈动脉MRI 3D T2-SPACE和数字减影血管造影(DSA)检查,分别评估动脉狭窄程度。按狭窄程度分成轻度(1%~49%)、中度(50%~69%)、重度(70%~99%)和闭塞(100%),和金标准DSA检查对照,计算灵敏度、特异度,并分析MRI 3D T2-SPACE和DSA诊断结果的一致性。结果MRI 3D T2-SPACE诊断大脑中动脉及基底动脉狭窄/闭塞的灵敏度、特异度结果如下,轻度狭窄分别为90.0%、96.4%,中度狭窄分别为77.8%、98.2%,重度狭窄分别为96.7%、97.8%,闭塞分别为87.5%、100.0%。MRI 3D T2-SPACE与DSA检查诊断大脑中动脉及基底动脉轻、中、重度狭窄及闭塞的一致性分别为0.760、0.760、0.934、0.929。结论MRI 3D T2-SPACE能够较准确地评估大脑中动脉及基底动脉狭窄程度,特别是对重度狭窄及闭塞的诊断与DSA检查结果高度一致,作为血管检查的一种全新技术,其将会在临床发挥重要作用。
文摘目的探讨T_2 star mapping、T_1 images与3D DESS融合伪彩图在关节软骨损伤中的诊断价值。方法对26例关节软骨损伤患者行T_2 star mapping、T_1 images和3D DESS扫描,并将T_1 images、T_2 star mapping与3D DESS图像融合,评价患者股骨、胫骨、髌骨关节软骨损伤程度并与关节镜结果对比,计算融合伪彩图诊断软骨损伤的特异性、敏感性及与关节镜诊断结果一致性。结果 T_1 images-3D DESS融合伪彩图诊断关节软骨损伤的敏感度、特异度及Kappa值分别为92.8%、93.0%、0.769,T_2 star mapping-3D DESS融合伪彩图诊断关节软骨损伤的敏感度、特异度及Kappa值分别为91.4%、94.2%、0.787。结论 T_2 star mapping、T_1 images与3D DESS融合伪彩图在关节软骨早期损伤评价上优于关节镜。
文摘Objective Io evaluate changes in morphology of the cesarean scar and uterus between one and two years after cesarean section using high-resolution,three dimensional T2-weighted sampling perfection with application optimized contrast using diflerent flip angle evolutions Magnetic Resonance Imaging(3DT2w SPACE MRI).Methods This prospective study was performed to investigate morphological changes in the cesarean scars and uterus from one to two years after cesarean section using high-resolution,3D T2w SPACE MRI.The healthy volunteers having no childbearing history were recruited as the controls.All data were measured by two experienced radiologists.All data with normal distribution between the one-year and two-year groups were compared using a paired-sample t test or independent t test.Results Finally,46 women took a pelvic MR examination one year after cesarean section,and a subset of 15 completed the same examination again after two years of cesarean section.Both the uterine length and the anterior wall thickness after two years of cesarean section(5.75±0.46 and 1.45±0.35 cm)were significantly greater than those measured at one year(5.33±0.59 and 1.25±0.27 cm)(t=-2.363 and-2.175,P=0.033 and 0.048).No significant difference was shown in myometrial thickness two years after cesarean section(1.45±0.35 cm)with respect to the control group(1.58±0.21 cm,P=0.170).Nine women who underwent MRI twice were considered to have scar diverticula one year after cesarean section,and still had diverticula two years after cesarean section.The thickness,height,and width of the uterine scar showed no significant change from one to two years(all P>0.05).Conclusions 3D T2w SPACE MRI provides overall morphologic details and shows dynamic changes in the scar and the uterus between one and two years after cesarean section.Scar morphology after cesarean section reached relatively stable one year after cesarean section,and uterine morphology was closer to normal two years after cesarean section.
文摘目的:研究MRI 3D CUBE T_(2)序列检查在踝关节外伤患者韧带损伤诊断中的价值。方法:选择2020年4月—2023年4月于白银市第一人民医院就诊的226例踝关节外伤拟行手术术前患者作为研究对象,按照不同检查方式将患者分为观察组(n=126)与对照组(n=100)。观察组采用MRI 3D CUBE T_(2)序列检查,对照组采取常规MRI检查。比较两组患侧、健侧距腓前韧带测量结果、诊断效能。结果:两组患侧、健侧距腓前韧带宽度及厚度比较,差异无统计学意义(P>0.05)。观察组Ⅰ级踝关节外伤患者韧带损伤诊断准确度、敏感度、特异度、阳性预测值、阴性预测值高于对照组,Ⅱ级患者准确度、敏感度、阴性预测值高于对照组,Ⅲ级患者准确度、特异度、阳性预测值高于对照组,差异有统计学意义(P<0.05)。结论:MRI 3D CUBE T_(2)序列检查踝关节外伤患者韧带损伤诊断效能高于常规MRI检查,可作为治疗效果评价及康复治疗的重要依据。
文摘目的:探讨MRI 3D CUBE T2序列检查在踝关节外侧韧带损伤诊断中的应用价值。方法:选取2022年1月至2024年2月本院收治的81例疑似踝关节外侧韧带损伤患者,回顾性分析其临床资料,均接受MRI常规二维序列及MRI 3D CUBE T2序列扫描,以关节镜检查结果为金标准,计算两种检查方式的图像质量及诊断效能。结果:本组81例疑似患者,经关节镜检查证实阳性53例,阴性28例。以关节镜检查结果为金标准,MRI 3D CUBE T2序列检查对踝关节外侧韧带损伤的诊断敏感度、特异性、准确度、阳性预测值、阴性预测值及正确指数均高于常规二维序列,假阳性率、假阴性率低于常规二维序列(P<0.05)。一致性分析发现,MRI 3D CUBE T2序列检查结果与关节镜检查结果之间的一致性Kappa值为0.744,一致性处于较高水平,高于常规二维序列的Kappa值0.572。3D CUBE T2序列扫描图像的边缘清晰度评分高于常规二维序列,运动伪影及模糊程度评分低于常规二维序列(P<0.05)。结论:MRI 3D CUBE T2序列扫描可清晰显示踝关节外侧韧带损伤形态学改变,图像清晰,可有效提高诊断效能,减少漏诊、误诊发生,为临床诊疗提供客观的影像学依据。
