MRI of hyperpolarized direct transverse using light given orbital angular momentum

摘要

Magnetic resonance system has' "main magnets 12 and 12 for generating a static magnetic field _{B 0} in, 14 ', 12' 14, 14 and the inspection area. Hyperpolarization apparatus 26, 26 ', 26 ", in order to induce magnetic resonance, by electromagnetic radiation given orbital angular momentum OAM, and hyperpolarized direct nuclear spins in a transverse direction to the static magnetic field B _0. Over The. orientation changes 104 with determining orientation tracking unit 100 the direction of the photon beam to the external coordinate system defined previously, given the OAM, according to the relative orientation that is determined, polariser gives an OAM I adjusted to the optimum orientation the direction of the photon beam was.