METHOD FOR DETERMINING MAGNETIC RESONANCE GRADIENT CORRECTION COMPENSATION FACTOR, MAGNETIC RESONANCE GRADIENT CORRECTION METHOD, AND APPARATUS
A method for determining a magnetic resonance gradient correction compensation factors, comprising: obtaining axial magnetic resonance signals when a mold applies a diffusion gradient to a gradient coil in different axial directions and a reference magnetic resonance signal when no diffusion gradien...
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| Format: | Patent |
| Sprache: | eng ; fre ; ger |
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| Zusammenfassung: | A method for determining a magnetic resonance gradient correction compensation factors, comprising: obtaining axial magnetic resonance signals when a mold applies a diffusion gradient to a gradient coil in different axial directions and a reference magnetic resonance signal when no diffusion gradient is applied to the gradient coil (S202); determining diffusion coefficient calculation values of a liquid in different axial directions according to the axial magnetic resonance signals and the reference magnetic resonance signal (S204); and determining, according to the diffusion coefficient calculation values of the liquid in different axial directions and a reference diffusion coefficient, gradient correction compensation factors of corresponding axes (S206). The mold is a mold filled with the liquid, and the liquid is isotropic. Also disclosed are a magnetic resonance gradient correction method and an apparatus. |
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