We prospectively evaluated the effect of injection rates on TIC analysis in free-breathing gadoxetic acid-enhanced MRI using radial sampling with KWIC reconstruction with different injection rate of 1, 2, and 3 mL/s in 48 patients. Time intensity curve analysis was performed and compared among the three injection rate groups. Time to peak in abdominal aorta was significantly shorter with higher injection rates, and the other parameters regarding portal vein, inferior vena cava, and liver parenchyma were not affected by the injection rates. Higher injection rate is recommended for the better discrimination on arterial input data.
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