Reference Normal Absolute and Indexed Values From ECG-Gated MDCT: Left Atrial Volume, Function, and Diameter

Abstract

Left atrial volume, function, and diameter normalized to age, sex, and body surface area can be reported from CTA datasets and may provide information important for patient care.

Comparison of end-diastolic versus end-systolic cardiac-computed tomography reconstruction interval in patient’s prior to pulmonary vein isolation

“…The Simpsons method is recommended while it does not rely on geometric assumptions and LAA as well as the ostia of the pulmonary veins are excluded from analysis (Christiaens et al 2009). Absolute as well as indexed values of mean LA volume and diameter for all ages were in line with previous published echocardiographic, computed tomography and cardiac MRI data (Stojanovska et al 2011; Christiaens et al 2009; Mahabadi et al 2009; Hudsmith et al 2007) when the exact method of analysis was applied. Main differences to the study were the method to evaluate the LA and LAA.…”

“…Evaluation of LA volume and diameter is crucial prior to PVI to adequately assess patients eligible for the procedure as well as after ablation procedure to observe or exclude post-procedural complications (Hur et al 2009; Stojanovska et al 2011). Larger LA volumes and/or diameters due to AF and LA/LAA thrombi are associated with an increased risk of stroke and other embolic events (Hur et al 2009; Gage et al 2004; Stojanovska et al 2011).…”

“…Larger LA volumes and/or diameters due to AF and LA/LAA thrombi are associated with an increased risk of stroke and other embolic events (Hur et al 2009; Gage et al 2004; Stojanovska et al 2011). The American Society of Echocardiography and the European Association for Echocardiography proposed the Simpsons method or the biplane area length method for evaluation of LA volume and diameter (Calkins et al 2012).…”

“…The left atrial appendage (LAA) was evaluated separately. LAV was quantified according to a modified Simpson’s method (Stojanovska et al 2011). For quantifying LA diameters in sagittal, coronal and axial direction, reformatted images were obtained at the level of the aortic valve parallel to the LV outflow tract in LVES for maximum LA diameters and in LVED for minimum LA diameters.…”

EHRA/HRS/APHRS/SOLAECE expert consensus on atrial cardiomyopathies: definition, characterization, and clinical implication

“…329,331,[333][334][335][336][337][338][339]345,[347][348][349][350][351][352][353][354][355][356][357][358][359][360] Two-dimensional echocardiographic LA volumes are typically smaller than those reported from computed tomography or cardiac magnetic resonance imaging (CMR). [361][362][363][364][365] Left atrium volume from 2D images is best measured using the disk summation algorithm because it includes fewer geometric assumptions. 366,367 The advent of 3-D ECHO has improved the accuracy of ECHO volume measurements which correlate well with cardiac computed tomography 368,369 and magnetic resonance imaging.…”