MAGNETIC RESONANCE (MR) IMAGING WITH B1-IMAGE Russian patent published in 2017 - IPC G01R33/24 

FIELD: physics.

SUBSTANCE: invention can be used for magnetic resonance (MR) imaging. Summary of invention consists in fact that body part arranged in volume of investigation of MR-device, is subjected to viewing sequence of RF pulses and switched gradients of magnetic field. Imaging sequence is sequence of stimulated echo-signals, including i) two preparatory RF pulses (α), emitted towards body area during reparatory period (21), and ii) RF pulses of reading (β), emitted in direction of body area during obtaining period (22), next in time to preparatory period (21). Obtaining FID signals (I₁) and stimulated echo signals (I₂) is performed during obtaining period (22) with same T₂*-weight coefficient. From obtained FID (I₁) and stimulated echo (I₂) signals B₁-image is obtained indicating spatial distribution of RF-field preparatory of RF pulses within body.

EFFECT: technical result is possibility of accurate measurement of spatial distribution of transmitted alternating electromagnetic field (RF field, which is also referred to as B₁ field).

26 cl, 8 dwg