FIELD: measurement equipment.
SUBSTANCE: scope of application: to perform measurements by means of a nuclear magnetic resonance in a multi-core system. Essence of the invention consists in the fact that it describes a multi-core RF antenna assembly to be used in multi-core MRI system or MR scanner, for transfer of RF excitation signals (field B1) for excitation of nuclear magnetic resonances (NMR) and/or for reception of NMR relaxation signals for multi-core recovery of MR image (magnetic resonance), with that, RF antenna assembly is tuned to Larmor frequencies of at least two different types of cores, which have at least two different gyromagnetic ratios, such as 1H, 14N, 31P, 13C, 23Na, 39K, 17O and hyperpolarised gases, such as 129Xe, or other isotopes having a nuclear spin. Additionally, the invention describes a recovery method of multi-core MR image, especially by means of the above described RF antenna assembly. The method involves reduction of artefacts of turndown of types having higher gyromagnetic ratio by means of parallel MRI recovery.
EFFECT: providing a possibility of MR (magnetic-resonant) measurement or recovery of MR image of types of cores, which have different gyromagnetic ratios ("multi-nuclearity"), but preferably using one and the same gradient magnetic fields for all cores, without causing any undesired artefacts of turndown for any of the considered cores or other disturbance in a general MR image.
13 cl, 2 dwg
