Comparison of left atrial dimensions by transesophageal and transthoracic echocardiography

Multi-modality imaging to assess left atrial size, anatomy and function

“…Few studies have compared the assessment of LA size with transoesophageal echocardiography and transthoracic echocardiography. Block et al 26. assessed different LA dimensions with transoesophageal echocardiography and transthoracic echocardiography in 109 patients.…”

“…Several studies have compared the value of the different imaging modalities for the assessment of LA size and volumes 23–26 36. Two-dimensional transthoracic echocardiography (using the biplane methods) may underestimate true LA size, as compared with CT36 or MRI 25.…”

Thromboembolic events early after mitral valve repair: Incidence and predictive factors

“…The left ventricular ejection fraction (LVEF) was measured using Simpson's method [13]. Left atrial diameter (LAD) was measured during systole [14]. The mean transmitral gradient was measured by continuous Doppler.…”

The Role of Left Atrial Imaging in the Management of Atrial Fibrillation

“…Volumetric data from 3D TTE are comparable to data generated by CMR and CCT imaging, whilst maximum LA volumes are underestimated by 2-dimensional TTE by approximately 30mL. 10 Compared to TTE imaging there is less standardized data for transesophageal echo (TEE ; Fig 1), the results of which correlate well with TTE data 41,42 but do appear to systematically underestimate LA size 41 and therefore potentially to overestimate the likely efficacy of CA.…”