ACCELERATED B FIELD MAPPING Russian patent published in 2014 - IPC G01R33/48 A61B5/55 

FIELD: instrumentation.

SUBSTANCE: invention relates to instrumentation and represents a method for magnetic-resonant shaping of images and a system for its implementation. At implementation of the method using a set of radio-frequency transmission coils, some number of B₁ field mapping sequences, which is less than the number of coils of the set, is performed; a set of B₁ field mapping data is obtained and sensitivities of coils in a basis of the obtained set of B₁ field mapping data are determined; with that, the determined coil sensitivities are used for B₁ shimming. As per some versions, the performed sequences of B₁ field mapping are set by linear conversion as per a set of radio-frequency transmission coils for formation of a set of orthogonal virtual radio-frequency transmission coils and for selection of a sub-set from a set of orthogonal virtual radio-frequency transmission coils, which sets the performed B₁ field mapping sequences.

EFFECT: increasing degree of homogeneity of transmitted field B₁ either in a non-filled or in a filled state.

14 cl, 7 dwg