The proposed study will be a single centre, prospective trial comparing the sensitivity and specificity of using Gadofosveset Trisodium (Gdfos, Ablavar) as the MRI contrast agent as compared to gadobutrol (EcGd, Gadovist).~The study population will include cancer patient's referred for an MRI study of the liver to rule out metastases. Those who meet the inclusion/exclusion criteria will their routine (clinical) MRI of the liver with EcGd. They will also receive an additional MRI with Gdfos within 4 weeks of the original study.~The patient data will be anonymized and the imaging will be read by radiologists and radiology residents and comparison will be made between the diagnostic accuracy of the EcGd-enhanced study and the Gdfos-enhanced study.
The purpose of this study is to determine if Gadofosveset Trisodium (Gdfos, Ablavar) is a useful magnetic resonance imaging (MRI) contrast agent in accurately diagnosing liver metastases compared to the standard agent gadobutrol (EcGd, Gadovist).