MIMICS OF HEMORRHAGE ON MRI

Mimics of Hemorrhage: Hyperintensity on T1W Images

Fat (biological or oil-based contrast agents) Very high nonparamagnetic protein content Paramagnetic or iodinated contrast agents Calcification Paramagnetic ions (associated with liver disease, hyperalimentation, calcification, necrosis) Mucinous material Intratumoral melanin Hypermyelination Ferromagnetic artifact Slow flow

Mimics of Hemorrhage: Hypointensity on T2W Images

Iron without hemorrhage Calcification or bone Air Very high nonparamagnetic protein content Deoxyhemoglobin in patent veins Mucinous material Rapid or turbulent flow Ferromagnetic artifact