Evaluation of Regional Variability and Measurement Reproducibility of Intravoxel Incoherent Motion Diffusion Weighted Imaging Using a Cardiac Stationary Phase Based ECG Trigger Method

Figure 1

(a) Schematic of the proposed cardiac stationary phase based ECG trigger (CapsECG) technique. The yellow circles represented the motion phase before the cardiac relative stationary, the red circles represented the cardiac relative stationary phase, and the green circles represented the motion phase after the cardiac relative stationary. The trigger delay time and data acquisition window were decided according to each subject’s cardiac relative stationary states, making sure images were collected during ventricular diastolic phases. (b) Intravoxel incoherent motion diffusion MR in normal liver lobe by CapsECG technique with = 0, 50, 100, 150, 300, and 600 sec/mm².

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