Abstract
Background Steady-state free precession (SSFP) results in larger volumes and lower ejection fraction for the left ventricle compared to fast gradient echo (fGRE) imaging. Similar comparisons for the left atrium (LA) are not available and may be relevant for 3T imaging and historical comparison to prior imaging datasets. As opposed to LV imaging, volumes in the LA are more commonly derived using biplane area measurements.
Highlights
Steady-state free precession (SSFP) results in larger volumes and lower ejection fraction for the left ventricle compared to fast gradient echo imaging
The mean left atrium (LA) volume measured by SSFP (65.1±21.2 ml) was 3 % larger than by fast gradient echo (fGRE) (63.2±21.9 ml), p < 0.001
There was an excellent agreement between two methods with intraclass correlation coefficient (ICC) of 0.933 (0.908 to 0.95), confirmed on the Bland-Altman analysis
Summary
Quantification of the relationship between two cardiac magnetic resonance techniques: fast gradient echo and steady-state free precession for determination of left atrial volumes. Filip Zemrak3*, Pierre-Jean Pintard, Elzbieta H Chamera, Saidi A Mohiddin, Saman Nazarian, Joao A Lima, Steffen E Petersen, David Bluemke
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