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- The energy centrobaric method is made use of correcting the Doppler spectrum, the simulation predicted value of the target velocity is obtained. 用能量重心校正法对多普勒频移校正,进而得到物体的运动速度的模拟计算值。
- Conclusions:The Doppler spectrum of CFV in moderate and severe TR group is characteristic with high atrial reversal velocity and long duration. 中、重度 TR组 CFV血流频谱受呼吸运动的影响减低 ; Va与 TR程度显著正相关 (r=0 .;92 3;P<0
- Results:The blood flow was abundant around the cancer tissue.The color signal of blood flow showed garland-like or punctate.The feature of its Doppler spectrum was o... 结果:前列腺癌周边血流丰富,彩色血流信号呈花环状或点棒状,多普勒频谱测值为高阻力指数特征。
- Objective:To detect the characteristics of Doppler flow spectrum of common femoral veins(CFV) in patients with tricuspid regurgitation(TR) and to determine the relation between Doppler spectrum and the degree of TR. 目的 应用多普勒超声技术检测三尖瓣返流 (TR)患者的股总静脉 (CFV)血流频谱 ,探讨频谱形态与 TR程度的关系。 方法 TR患者 6 5例 ,轻度 2 8例 ,中度 2 0例 ,重度 17例。
- In PAH group, the mitral valve orifice blood streams, the AV of Doppler spectrum,the velocity-time integra and AV/EV, AVI/EVI were all increased significantly compared with the control group (P<0?01). PAH组与对照组比较;二尖瓣口血流多普勒频谱A峰流速(AV)、速率时间积分(AVI)及肺动脉压与二尖瓣口血流频谱比值(AV/EV);AVI/EVI均逐渐明显增大;差异均有显著意义(P<0.;01);
- Methods Left ventricular stroke volume (LVSV) in 36 healthy volunteers were measured by RT-3PE, M-mode Teichholz, two-dimensional echocardiography (2DE) simpson method and the product of aortic flow Doppler spectrum integral and aortic valvular area. 方法应用RT-3PE测量36例正常人的左室每搏量(LVSV),并分别与M型Teichholz法、二维超声心动图Simpson法、多普勒主动脉瓣环血流量法所测的LVSV进行比较。
- Missile acceleration dominates echo Doppler spectrum broadening, hereby a single/multiple target discrimination method using the super?resolution spectrum estimation after signal de?chirping is put forward. 导弹加速度对目标回波多普勒频谱展宽起主要作用,据此提出了去斜率后进行超分辨谱估计的单/多目标鉴别方法;
- The NIMA Method for Improved Moment Estimation from Doppler Spectra. 从多普勒光谱进行的改进瞬时评估的NIMA方法。
- By analyzing the relationship between basis expansion model (BEM) and Doppler spectrum, the authors propose a scheme based on fractional BEM for the estimation of doubly selective channel parameters. 摘要通过分析复指数基扩展模型(BEM)与多普勒扩展频谱之间的关系,提出一种基于分数倍基扩展模型的双选信道估计方法。
- Methods The HVF Doppler spectra of 30 patients with CP,31 normals and 20 cases with pulmonary hypertension(HP) were examined with colour Doppler echocardiography. 方法 应用彩色多普勒超声心动图检测了 30例缩窄性心包炎患者肝静脉血流多普勒频谱变化 ,并与 31例正常人及 2 0例肺动脉高压者对比观察。 结果 缩窄性心包炎组肝静脉血流多普勒频谱 s波较正常组及肺动脉高压组明显降低 ;
- Beam Broadening Effect on Oblique MST Radar Doppler Spectrum 光束变宽对倾斜MST雷达多谱勒光谱的影响
- The survey covered a broad spectrum of topic. 这本简史涉及的话题范围很广。
- Long duration meteor echoes characterized by Doppler spectrum bifurcation 由多谱勒光谱分叉点表现的长期流星回波特征
- Research on estimating missile miss distance using fuze Doppler spectrum 利用引信多普勒频率估计导弹脱靶量方法研究
- The Compensation for the Doppler Spectrum Centroid Deviation of the SAR 合成孔径雷达多普勒频谱偏移误差的补偿
- Red and violet are at opposite ends of the spectrum. 红色和紫色位于光谱相对的两端。
- There's a wide spectrum of opinions on this problem. 对这个问题的说法众说纷纭,莫衷一是。
- In the spectrum, distinct colours shade into each other. 在光谱中,截然不同的颜色相互融合起来。
- There is a wide spectrum of opinions on this question. 在这个问题上有著各种不同的意见。
- Effects of ionosphere on HF sea echo Doppler spectra 高频海洋回波谱电离层污染及实验研究