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. Author manuscript; available in PMC: 2013 Sep 4.
Published in final edited form as: Circulation. 2012 Jul 31;126(10):1206–1216. doi: 10.1161/CIRCULATIONAHA.111.089409

Figure 1.

Figure 1

Myocardial and blood pool T1 relaxation curves from a surviving individual who had a normal extracellular volume fraction (ECV). Signal intensity for myocardium and blood pool in the thumbnail images are plotted against inversion time, and T1 values are derived from a 3 parameter fit. The accumulation of Gd contrast is reflected by the (nonlinear) shift of T1 curves, i.e., ΔR1 (arrow). T1 data can be measured from regions of interest taken from individual thumbnail images or from a T1 map (inset) where the curve fitting occurs on a pixelwise basis from motion corrected, registered images27 (see text for details). With a hematocrit of 45.2%, the ECV was computed at 22.8%.