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Figure 1 | Journal of Cardiovascular Magnetic Resonance

Figure 1

From: Comparing the accuracy and precision of SMART1Map, SASHA and MOLLI

Figure 1

Data sampling for SMAR1Map, MOLLI, and SASHA are illustrated for heart rates of 60 bmp (left) and 100 bpm (right). Sample points are shown on the saturation recovery curve ("SR" for SMART1Map and SASHA) or inversion recovery curve ("IR" for MOLLI) for a T1 (or T1*) of 1200 ms. SMART1Map and MOLLI obtain samples that are better distributed across the recovery curve, whereas SASHA is limited to many short sample times (<RR interval). At higher heart rates, the distribution of sample points for SASHA is further compressed. Note that both SMART1Map and SASHA acquire one "infitine" sample time with no preparation pulse, illustrated here at T1 = 6000 ms for convenience.

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