US 12,171,541 B2
Magnetic resonance imaging apparatus, hyperpolarization signal obtaining method, and non-volatile computer-readable storage medium storing therein hyperpolarization signal obtaining program
Ryohei Takayanagi, Otawara (JP); Takaya Mori, Nasushiobara (JP); Kagami Fujita, Otawara (JP); Akihiro Taguchi, Sakura (JP); and Masao Yui, Otawara (JP)
Assigned to CANON MEDICAL SYSTEMS CORPORATION, Otawara (JP)
Filed by CANON MEDICAL SYSTEMS CORPORATION, Otawara (JP)
Filed on Feb. 8, 2023, as Appl. No. 18/165,961.
Claims priority of application No. 2022-020436 (JP), filed on Feb. 14, 2022.
Prior Publication US 2023/0255507 A1, Aug. 17, 2023
Int. Cl. A61B 5/055 (2006.01); A61B 5/00 (2006.01)
CPC A61B 5/055 (2013.01) [A61B 5/72 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A magnetic resonance imaging apparatus comprising 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.