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Background: Global longitudinal strain (GLS) by 2D speckle tracking (2D-ST) improves diagnostic accuracy of wall motion analysis during dobutamine stress echocardiography (DSE), but limited by time consumption and expertise. 3D speckle tracking (3D-ST) is a new method that may improve diagnostic ...
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(LVEF) was assessed by Simpson's method.The level of serum MMP-9,TIMP-1 at different time points were determined and the correlation between MMP-9,TIMP-1,MMP-9/TIMP-1 and echo parameters were analysed.Results After chemotherapy,when cumulative epirubicin dose was at 150 mg/m~2,the GLS ...
To test this system, we simulated transgene flow using known quantities of GE and non-GE DNA and determined that 0.038% (38 pg) GE papaya DNA could be detected using real-time PCR. We also validated this system by extracting DNA from known ratios of GE seeds to non-GE seeds of papaya...
Besides supplying computer-generated images, VPL’s goggls contain a magnetic tracking mechanism that responds to movements of a person’s head, causing the field of vision to shift as it might in the real world. Moving the glove signals the computer to move objects in the artificial environmen...
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方法扩张型心肌病(DCM组)患者0例,体检健康者3 例为对照组,实时三维超声心动图采取心尖全容积成像,分别 测量左室舒张末容积(LVEDV)、收缩末容积(LVESV)及射血分数(LVEF);RT3D-STI测量左室整体长轴应变(GLS)、整体 轴向应变(G S)、整体径向应变(GRS)及整体面积应变(GAS)。测定血浆脑钠肽(BNP)水平,分析其与左...
In this article, a time-domain three-stage algorithm with computational efficiency is proposed for real-time tracking the onsets, locations, and extents of abrupt stiffness degradations of structural elements using measurements of structural acceleration responses. Structural dynamic parameters before damage...
METHODS. Deep learning networks were trained to identify apical views, identify timing of end-systole and end-diastole, conduct cardiac segmentation, estimate myocardial motion, assess LV length in each view for foreshortening detection, and present real-time visualization of tracking quality and GLS ...