Gadofosveset Trisodium (Ablavar, Gdfos) in Distinguishing Hemangiomas and Metastases: A Prospective Trial

Participants will receive Gdfos at a dose of 10 mL of 0.25mmol/mL. This will be administered automatically using an MRI-compatible power injector, as a bolus through an intravenous line placed in an antecubital vein at a rate of 1.5 mL/s followed by 25 mL of 0.9% saline flush. Participants will be imaged using a 3.0 T MRI scanner with an 8 channel body phased array coil utilized covering the entire liver. Images of the liver will be obtained including: axial precontrast phase, axial arterial phase, axial portovenous phase, axial 5 minute delayed phase, axial 10 minute delayed phase, axial 20 minute delayed phase. This study will be performed within 4 weeks of the MRI study with EcGd.

Participants will receive a liver MRI with EcGd as per clinical institutional protocol. Participants will receive EcGd at a dose of 0.1 mL/kg body mass up to 10 mL. This will be administered automatically using an MRI-compatible power injector, as a bolus through an intravenous line placed in an antecubital vein at a rate of 1.5 mL/s followed by 25 mL of 0.9% saline flush. Participants will be imaged using a 3.0 T MRI scanner with an 8 channel body phased array coil utilized covering the entire liver. Images of the liver will be obtained including: axial precontrast phase, axial arterial phase, axial portovenous phase, axial 5 minute delayed phase, axial 10 minute delayed phase, axial 20 minute delayed phase. Additional noncontrast images will be obtained as per institutional protocol, including diffusion weighted imaging, in/out of phase imaging, and T2 weighted imaging.