Gadoxetic Acid-Enhanced MRI of Liver: Can 5 Min-Delayed Hepatocyte-Phase Imaging with High Flip Angle (30) Replace 20 Min-Delayed Hepatocyte-Phase Imaging with Low Flip Angle (10)?

Eun-Suk Cho¹, Jeong-Sik Yu¹

In gadoxetic acid-enhanced MRI of liver, 5 min-delayed hepatocyte phase imaging (HPI) using 30° flip angle (FA) has higher or similar lesion-to-liver CNR and detection rate for focal hepatic lesions, compared to 20 min HPI using 10° FA. This indicates that 5 min-delayed HPI using high FA (30°) could replace 20 min delayed HPI using standard low FA (10°) with 15 min time-saving, because the former provides higher or similar diagnostic performance compared to the latter.