公开(公告)号：US20230255507A1

公开(公告)日：2023-08-17

申请号：US18165961

申请日：2023-02-08

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Ryohei TAKAYANAGI ,  Takaya MORI ,  Kagami FUJITA ,  Akihiro TAGUCHI ,  Masao YUI

IPC: A61B5/055 ,  A61B5/00

CPC classification number: A61B5/055 ,  A61B5/72

Abstract: A magnetic resonance imaging apparatus includes sequence controlling circuitry configured: to obtain, during a time period after excitation of a first nuclide in a hyperpolarized state but no later than before obtainment of a first magnetic resonance signal from the first nuclide, a second magnetic resonance signal from a second nuclide that is different from the first nuclide and is in a non-hyperpolarized state, by exciting the second nuclide; and to control each of gradient magnetic field waveforms so as to cause both a first sum indicating a sum of application amounts of a gradient magnetic field related to the excitation of the second nuclide and a second sum indicating a sum of application amounts of a gradient magnetic field related to the obtainment of the second magnetic resonance signal to be close to zero, no later than before the obtainment of the first magnetic resonance signal.