Typical ROI delineation in interventricular septum (left) and the corresponding multi-echo fast spin-echo (FSE) signal decays of repeated scans (right), demonstrating excellent reproducibility among five trials or breath-hold measurements during a single MRI exam. Note that, with turbo factor of 2 and odd echoes occupying the central k-space lines, the first effective TE was equal to the inter-echo time and while the subsequent effective inter-echo spacing of echo images was twice the actual inter-echo time. The signal intensities at the first TE in repeated measurements were normalized to unity for comparison.
