Flip Angle Optimization for Hepatobiliary Phase MRI at 0.55 T in Patients With Metastatic Neuroendocrine Tumors: A Prospective Study

AJR Am J Roentgenol. 2025 Jul;225(1):e2532888. doi: 10.2214/AJR.25.32888. Epub 2025 Apr 16.
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Plain language summary

In patients with metastatic neuroendocrine tumors who underwent MRI at 0.55 T using gadoxetate disodium, hepatobiliary phase images showed optimal liver-lesion contrast and liver-vessel contrast at a flip angle of 30° and optimal liver signal intensity at 20°. These results will help inform protocol development for midfield hepatobiliary phase imaging.