Imagion Biosystems Limited provides medical imaging technologies using magnetic resonance. It has activities in nanotechnology; biotechnology; cancer diagnostics; and superparamagnetic relaxometry. The company develops MagSense, which is in Phase I clinical trials for the treatment of HER2 breast cancers; and PrecisionMRX, an iron oxide nanoparticle to detect cancer. Imagion Biosystems Limited has a collaborative research program with Patrys Limited to use the MagSense nanoparticles for enhancing brain tumor imaging and diagnosis. The company was incorporated in 2016 and is based in San Diego, California.