<unk>  is a gadolinium-based MRI contrast agent that is FDA approved for the procedure of visualizing lesions with abnormal vascularity in the brain, spine, and associated tissues and facilitate the visualization of lesions with abnormal vascularity within the thoracic, abdominal, pelvic cavities, and the retroperitoneal space. There is a Black Box Warning for this drug as shown here.  Common adverse reactions include nausea, headache, dizziness.
Gadodiamide
Acetohexamide
Indoramin
Indapamide
Metahexamide
Phosphamidon
Iohexol
Iodixanol