Safir-Mardanloo Azam, Khorsand Askari Mani, Lotfi Tokaldany Masoumeh-, Ashrafi Mohammad Moein, Sadeghian Hakimeh
Echocardiography Department, Tehran Heart Center, Tehran University of Medical Science, Tehran, Iran.
Research Department, Tehran Heart Center, Tehran University of Medical Science, Tehran, Iran.
Echocardiography. 2019 Mar;36(3):521-527. doi: 10.1111/echo.14261. Epub 2019 Feb 6.
To determine normal values for tissue velocity imaging (TVI) and strain rate imaging (SRI) in the left atrium (LA) and right atrium (RA) in normal subjects.
A total of 63 healthy volunteers (50.8% male, age: 20-50 years) prospectively underwent TVI and SRI. The peak systolic velocity (TVs), strain (STs) and strain rate (SRs), peak early and late diastolic velocities (TVe and TVa), strain (STe and STa), and strain rate (SRe and SRa) were measured in the base and mid of the LA and RA walls and roofs.
By TVI, TVs and TVe of LA walls decreased significantly from basal to mid-level and from mid to the roof. Mean Tva of LA walls reduced significantly from basal to mid-level and to the roof. By SRI, mean STs and STe of LA walls increased remarkably from basal to mid-level and to the roof and also mean SRs, SRe and SRa increased significantly from basal to mid-level and to the roof. For SRe, the changes were also significant from mid-LA wall to the roof. Mean Tvs, Tve, and Tva of the RA walls reduced significantly from base to mid and then to the RA roof. RA systolic, early, and late diastolic ST and SR increased from base to mid and to the roof.
Peak systolic and diastolic velocities of the LA and RA decreased from the base to the mid and to the roof, while systolic and diastolic ST and SR increased from the base to the mid to the roof.
确定正常受试者左心房（LA）和右心房（RA）组织速度成像（TVI）和应变率成像（SRI）的正常值。
共有63名健康志愿者（男性占50.8%，年龄20 - 50岁）前瞻性地接受了TVI和SRI检查。在LA和RA壁及顶部的基部和中部测量了收缩期峰值速度（TVs）、应变（STs）和应变率（SRs）、舒张早期和晚期峰值速度（TVe和TVa）、应变（STe和STa）以及应变率（SRe和SRa）。
通过TVI检查，LA壁的TVs和TVe从基部到中部以及从中部到顶部均显著降低。LA壁的平均Tva从基部到中部以及到顶部均显著降低。通过SRI检查，LA壁的平均STs和STe从基部到中部以及到顶部均显著增加，并且平均SRs、SRe和SRa从基部到中部以及到顶部也显著增加。对于SRe，从LA壁中部到顶部的变化也很显著。RA壁的平均Tvs、Tve和Tva从基部到中部再到RA顶部均显著降低。RA收缩期、舒张早期和晚期的ST和SR从基部到中部再到顶部均增加。
LA和RA的收缩期和舒张期峰值速度从基部到中部再到顶部降低，而收缩期和舒张期的ST和SR从基部到中部再到顶部增加。
