Johann Wolfgang Goethe-Universitat Frankfurt Am Main

Johann Wolfgang Goethe-Universitat

Thomas Prisner

Vasyl Denysenkov

Kerstin Münnemann

Jan Krummenacker

Laura Schreiber

A hyperpolarized liquid contrast agent is for use in a MRT device. The liquid contrast agent passes through a conduit of a MW resonator in the magnetic field of the MRT device. A microwave with a frequency of at least 40 GHz couples into the MW resonator for polarizing the liquid contrast agent upon passage through the conduit in the MW resonator using DNP. The contrast agent is polarized in a continuous passage in the MW resonator and administered immediately. A MW mode is formed in the MW resonator which has an antinode in the magnetic field strength and a node in the electric field strength. The power of the introduced microwave and coupling of the microwave into the resonator are adjusted such that in the area of the line, an amplitude of the MW magnetic field strength results, wherein Tis the relaxation time of the DNP-active electrons.

Hyperpolarization apparatus and method for administration of a hyperpolarized liquid contrast agent

A double-resonance structurefor DNP-NMR and/or ENDOR experiments is described. The double-resonance structurecomprises a microwave resonatorfor generating electromagnetic field suitable for EPR, and an HF resonatorfor generating electromagnetic fields suitable for NMR. The HF resonatorcomprises a plurality of electrically conductive strips, which are electrically connected so that an HF current can be generated in the plurality of stripssuch that the HF currents flow in the same direction in the individual stripsat the same time. A section of the HF resonatorat the same time forms a part of the microwave resonator

Dual-resonance structure and method for examining samples using a plurality of conductive strips

A double-resonance structure for DNP-NMR experiments and/or ENDOR experiments and methods using such a double-resonance structure. The double-resonance structure comprises a microwave resonator for generating electromagnetic fields suitable for EPR and an HF resonator for generating electromagnetic fields suitable for NMR. The HF resonator is formed by a strip resonator, a section of the strip resonator at the same time forming a portion of the microwave resonator.

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Bad Vilbel, Germany

Thomas Prisner