Detection of tumors with ¹⁹F magnetic resonance imaging

Previous¹⁹F magnetic resonance imaging studies showed that the reticuloendothelial system can be imaged with an emulsion of perfluorooctyl bromide (PFOB). Similar techniques can be used to detect previously implanted RIF-1 tumors in mice after intravenous PFOB administration. Accumulation of PFOB within these neoplasms is due to egress of the emulsion through tumor capillary fenestrations. This is the first report in which ¹⁹F MRI and PFOB are used to detect tumors. This technique may allow clinical detection of cancer with ¹⁹F MRI.