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Figure 1 | Journal of Cardiovascular Magnetic Resonance

Figure 1

From: Electromechanical analysis of optimal trigger delays for cardiac MRI

Figure 1

Left ventricular volume graphs from Wiggers diagram demonstrating optimal trigger delays for single-phase cardiac MRI. (a) Minimal systolic motion begins during the last 1/6 of LVET, when the left ventricular volume change is small. Tsys = IVC + 5/6 LVET, where LVET = QS2 - QonsetRpeak - IVC. (b) Minimal diastolic motion begins slightly before the end of the rapid filling phase. Tdias = QS2 - QonsetRpeak + IVR + Trapid - 50.

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