Fetal 4D flow MRI of the great thoracic vessels at 3 Tesla using Doppler-ultrasound gating: a feasibility study.

For peak and mean velocities, significantly worse results were achieved (Table 3 ). The results from the Bland-Altman plots were confirmed by a highly significant correlation between 4D and 2D stroke volumes ( r = 0.96, p < 0.001) (Fig. 4a ).

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