Evans Blue Dye Derivatives for Serum Albumin Labeling

The invention is an imaging agent and method of use for imaging blood pools and the lymphatic system. The imaging agent binds with high affinity to serum albumin, the most abundant serum protein, and can be tagged with several isotopes making it suitable for magnetic resonance imaging or positron emission tomographic imaging. To date, only very few blood-pool tracers have been introduced for positron emission tomography. The existing ones have short half-lives (20.4 min for 11C and 2.05 min for 15O) and thus can only be used in centers with an in-house cyclotron.