Keywords: Contrast Agent, Contrast Agent, red blood cells, Super Paramagnetic Iron Oxide NanoparticlesWe have developed a next generation, safe, personalised iron-based contrast agent (CA) for empowering functional Magnetic Resonance Imaging (fMRI). Our proprietary method uses state-of-the-art red blood cell (RBC) encapsulation technology to engineer biocompatible super-paramagnetic CAs able to withstand rapid clearance from the bloodstream by macrophages (as part of the mononuclear phagocytic/reticuloendothelial system). The agent is validated in a multi-modal (concurrent fMRI and intrinsic optical imaging) preclinical rat model as a novel CA for the mapping of cerebral blood volume (CBV) in response to somatosensory stimulation, providing a non-BOLD alternative for accurate, high-resolution mapping of brain function.
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