After three years of operation,the Qinghai-Tibet Railway has brought great changes to Tibet and its people The Qinghai-Tibet Railway, the 1,956-km transportation link that began operations over the "roof of the w...After three years of operation,the Qinghai-Tibet Railway has brought great changes to Tibet and its people The Qinghai-Tibet Railway, the 1,956-km transportation link that began operations over the "roof of the world" in 2006, made it through severe tests to its展开更多
Recently, the enterprises which had joined Japanese textile standard of self-regulation standards(that is white list management system) had been officially announced. Including Qingdao GuiHua knitting limited company,...Recently, the enterprises which had joined Japanese textile standard of self-regulation standards(that is white list management system) had been officially announced. Including Qingdao GuiHua knitting limited company, there are 32 companies accessed to white list qualification.展开更多
Quantification of right ventricular(RV)volume and function remains a challenge because of RV complex geometry by conventional echocardiography.The purpose of this study was to assess RV global longitudinal function in...Quantification of right ventricular(RV)volume and function remains a challenge because of RV complex geometry by conventional echocardiography.The purpose of this study was to assess RV global longitudinal function in patients with tetralogy of Fallot(TOF)by 2-dimensional ultrasound speckle tracking imaging(STI).Thirty-eight patients with TOF were enrolled in this study and divided into child group(n=25)and adult group(n=13)according to age.Thirty-eight age-and sex-matched normal subjects were selected as c...展开更多
To assess fight ventficular free wall longitudinal myocardium deformation and examine the changes with normal age by speckle tracking imaging （STI）, myocardial systolic peak strain （ε）, systolic peak strain rate ...To assess fight ventficular free wall longitudinal myocardium deformation and examine the changes with normal age by speckle tracking imaging （STI）, myocardial systolic peak strain （ε）, systolic peak strain rate （SRs）, early diastolic peak strain rate （SRe）, late diastolic peak strain rate （SRa）, the ratio of SRe/SRa were measured in the basal, middle and apical segments of right ventficular free wall in 75 healthy volunteers （age range： 21-71 y） by STI from the apical 4-chamber view. RV longitudinal strain and strain rate were highest in the basal segment of the free wall. Older subjects had lower early diastolic strain rate （SRe） than younger subjects, but they had higher late diastolic strain rate （SRa）. A negative correlation between age and the ratio of SRe/SRa was found in all RV free wall segments （r=-4）.466 - -0.614, P〈0.01）. It is concluded that RV diastolic strain rate changes with age and STI can be used for the study of RV myocardial deformation.展开更多
THE transportation system in China has experienced monumen- tal development over the past decades as the country continues to accelerate into a new era. Over the past few months I have experienced every mode of transp...THE transportation system in China has experienced monumen- tal development over the past decades as the country continues to accelerate into a new era. Over the past few months I have experienced every mode of transportation possible in the world＇s most populous country： from taxi to plane, bicycle to tuc-tuc. subway to bus. All of these experiences left me impressed and satisfied.展开更多
目的利用四维自动右心室定量分析技术(4D Auto RV)评价肺切除术后患者的早期右心室容积和功能变化情况。方法选取2021年1月~2022年12月在中国科学技术大学附属第一医院行胸腔镜下肺结节肺切除术的患者51例,其中单纯肺段或肺楔形切除25例...目的利用四维自动右心室定量分析技术(4D Auto RV)评价肺切除术后患者的早期右心室容积和功能变化情况。方法选取2021年1月~2022年12月在中国科学技术大学附属第一医院行胸腔镜下肺结节肺切除术的患者51例,其中单纯肺段或肺楔形切除25例,肺叶切除26例。在进行肺切除的术前和术后1月内行超声心动图检查,利用4D Auto RV技术评估肺切除术后右心室容积和功能的变化,右心室容积参数包括右室舒张末期容积(EDV)、右室收缩末期容积(ESV)、每搏输出量等。右心室功能参数包括右心室射血分数(RVEF)、三尖瓣环纵向位移(TAPSE)、面积变化分数(FAC)及右心室整体纵向应变(RV-GPLS)、游离壁侧纵向应变(RV-FWPLS)。结果胸腔镜下肺切除术后早期右心室容积增加,具体表现为手术前后的EDV、ESV发生变化(P<0.05),每搏输出量在手术前后的变化无统计学意义(P>0.05)。右心室功能参数FAC、RV-GPLS、RV-FWPLS在手术前后的差异有统计学意义(P<0.05),其对手术引起的右心室功能改变较敏感,而RVEF和TAPSE在手术前后的变化差异无统计学意义(P>0.05)。单纯肺段/楔形切除术与肺叶切除术两种手术切除范围对患者术后右心容积和功能参数变化差异无统计学意义(P>0.05)。结论肺切除术后早期阶段,尽管患者可能未表现出明显的临床症状,但通过4D Auto RV技术发现术后右心室扩张,早期出现右心室轻度功能障碍,表现为FAC、RV-GPLS和RV-FWPLS减低。展开更多
文摘After three years of operation,the Qinghai-Tibet Railway has brought great changes to Tibet and its people The Qinghai-Tibet Railway, the 1,956-km transportation link that began operations over the "roof of the world" in 2006, made it through severe tests to its
文摘Recently, the enterprises which had joined Japanese textile standard of self-regulation standards(that is white list management system) had been officially announced. Including Qingdao GuiHua knitting limited company, there are 32 companies accessed to white list qualification.
文摘Quantification of right ventricular(RV)volume and function remains a challenge because of RV complex geometry by conventional echocardiography.The purpose of this study was to assess RV global longitudinal function in patients with tetralogy of Fallot(TOF)by 2-dimensional ultrasound speckle tracking imaging(STI).Thirty-eight patients with TOF were enrolled in this study and divided into child group(n=25)and adult group(n=13)according to age.Thirty-eight age-and sex-matched normal subjects were selected as c...
文摘To assess fight ventficular free wall longitudinal myocardium deformation and examine the changes with normal age by speckle tracking imaging （STI）, myocardial systolic peak strain （ε）, systolic peak strain rate （SRs）, early diastolic peak strain rate （SRe）, late diastolic peak strain rate （SRa）, the ratio of SRe/SRa were measured in the basal, middle and apical segments of right ventficular free wall in 75 healthy volunteers （age range： 21-71 y） by STI from the apical 4-chamber view. RV longitudinal strain and strain rate were highest in the basal segment of the free wall. Older subjects had lower early diastolic strain rate （SRe） than younger subjects, but they had higher late diastolic strain rate （SRa）. A negative correlation between age and the ratio of SRe/SRa was found in all RV free wall segments （r=-4）.466 - -0.614, P〈0.01）. It is concluded that RV diastolic strain rate changes with age and STI can be used for the study of RV myocardial deformation.
文摘THE transportation system in China has experienced monumen- tal development over the past decades as the country continues to accelerate into a new era. Over the past few months I have experienced every mode of transportation possible in the world＇s most populous country： from taxi to plane, bicycle to tuc-tuc. subway to bus. All of these experiences left me impressed and satisfied.
文摘目的利用四维自动右心室定量分析技术(4D Auto RV)评价肺切除术后患者的早期右心室容积和功能变化情况。方法选取2021年1月~2022年12月在中国科学技术大学附属第一医院行胸腔镜下肺结节肺切除术的患者51例,其中单纯肺段或肺楔形切除25例,肺叶切除26例。在进行肺切除的术前和术后1月内行超声心动图检查,利用4D Auto RV技术评估肺切除术后右心室容积和功能的变化,右心室容积参数包括右室舒张末期容积(EDV)、右室收缩末期容积(ESV)、每搏输出量等。右心室功能参数包括右心室射血分数(RVEF)、三尖瓣环纵向位移(TAPSE)、面积变化分数(FAC)及右心室整体纵向应变(RV-GPLS)、游离壁侧纵向应变(RV-FWPLS)。结果胸腔镜下肺切除术后早期右心室容积增加,具体表现为手术前后的EDV、ESV发生变化(P<0.05),每搏输出量在手术前后的变化无统计学意义(P>0.05)。右心室功能参数FAC、RV-GPLS、RV-FWPLS在手术前后的差异有统计学意义(P<0.05),其对手术引起的右心室功能改变较敏感,而RVEF和TAPSE在手术前后的变化差异无统计学意义(P>0.05)。单纯肺段/楔形切除术与肺叶切除术两种手术切除范围对患者术后右心容积和功能参数变化差异无统计学意义(P>0.05)。结论肺切除术后早期阶段,尽管患者可能未表现出明显的临床症状,但通过4D Auto RV技术发现术后右心室扩张,早期出现右心室轻度功能障碍,表现为FAC、RV-GPLS和RV-FWPLS减低。
