Non-contrast renal magnetic resonance angiography (MRA) is particularly valuable since contrast agents increase the risk of the Nephrogenic Systemic Fibrosis for the patients with renal failure. NATIVE TrueFISP together with triggering technique is commonly used for free breathing renal MRA. Here, we use 2D-PACE (Prospective Acquisition CorrEction) for respiratory triggering, therefore no external gating devices are needed and the preparation time is saved. The result shows that the image quality achieved by 2D PACE is comparable or superior to the conventional triggering techniques, which promises to be an alternative triggering method for renal MRA in clinical routine.
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