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MRI quantification of the cardiac ventricles is time-consuming, especially for the right ventricle due to its
complex geometry. Using a short axis MRI protocol, we tested if briefly coaching persons inexperienced in cardiac MRI
provides reliable right and left ventricular quantification.
22 healthy subjects (mean age 26 ± 4.2 years) underwent short-axis breath-hold SSFP sequence cardiac MRI. Two persons
inexperienced in cardiac MRI independently traced endocardial and epicardial contours of both ventricles with a predefined
contour tracing protocol. Measurements were repeated after visual correction of each two most basal slices of the
endocardial contours and epicardial contours in the learning curve. Five random short-axis cines were retraced for intraobserver
variability. Measurements were performed blinded within 4 months. Agreement was assessed with the Bland-
No systematic bias was observed and measurements were within acceptable limits of agreement after brief coaching. Repeat
measurements following visual correction significantly improved inter-observer differences, especially for mass calculations.
Maximum interobserver and intraobserver disagreement of the final protocol were respectively ≤ 8% and ≤ 5%.
Brief coaching of persons inexperienced in cardiac MRI, using the short axis MRI protocol, provides reliable volume,
function and mass quantification of both ventricles.