Jun 11, 2018 · Right ventricular function is associated with long-term outcomes of heart failure (HF), particularly with atrial fibrillation (AF). The aim of this study was to evaluate the prognostic value of Doppler tissue imaging at the mitral and tricuspid annuli in patients with HF and AF.

MV E/A = E-wave / A-wave MV E/A is the ratio of the early (E-wave) to late (A-wave) ventricular filling velocities. It is a first generation test for diastolic performance of the heart.

Pulsed wave DTI provides the capability of recording the low velocities of the moving wall structure with a high sampling rate. In this study we measured mitral annulus velocity at the septal side.

Mar 14, 2006 · Doppler echocardiography relies on detection of the shift in frequency of ultrasound signals reflected from moving objects. With this principle, conventional Doppler techniques assess the velocity of blood flow by measuring high-frequency, low-amplitude signals from small, fast-moving blood cells.

Aug 1, 1997 · Mitral annulus motion is less load dependent than conventional mitral inflow variables. Its assessment by DTI appears to be useful for evaluating diastolic function, especially in the detecting a pseudonormalization pattern of mitral inflow.

The aim of this study was to construct normal z-score tables for longitudinal directed Doppler tissue imaging (DTI) systolic wave (S), DTI early diastolic wave (E'), and DTI late diastolic wave (A') at the mitral valve annulus (MV), superior ventricular …

Oct 15, 2014 · Tissue Doppler imaging (TDI) is a useful echocardiographic technique to evaluate global and regional myocardial systolic as well as diastolic function. It can also be used to quantify right ventricular and left atrial function.

Dec 5, 2022 · As part of a comprehensive left ventricular (LV) diastolic assessment, doppler tissue imaging (DTI) of the medial and lateral aspects of the mitral valve (MV) annulus should be performed. In the image below, I have labeled a DTI of the lateral aspect of the MV derived from a mid-esophageal 4-chamber TEE view.

Objective: To evaluate the characteristics of wall motion in cases of dilated cardiomyopathy (DCM) by the use of Doppler tissue imaging (DTI). Methods: We observed 30 DCM patients and 30 normal volunteers. For the assessment of short axis motion, the myocardial velocities (MV) and transmural myocardial velocity gradients (MVG) of the middle ...

Aug 9, 2017 · 这部分一般包括：彩色多普勒血流成像（color doppler flow imaging,CDFI）、频谱多普勒成像、组织多普勒成像 (doppler tissue image,DTI )，三大指标。 其中频谱多普勒成像视不同要求可采用脉冲多普勒（pulsed wave doppler, PWD）或连续多普勒（continuous wave doppler, CWD）两种方法，前者更常用。 （1）CDFI 观测瓣膜反流程度. CDFI 显示经二尖瓣口至左房侧以蓝色为主的反流束，将二尖瓣口到左房底部距离分为四等分，根据返流束到达部位 I、II、III …