Method and apparatus for capturing magnetic resonance signals, recording medium and system for magnetic resonance imaging using the same
AssigneeGE Medical Systems Global Technology Company, LLC
InventorAki Yamazaki
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Abstract
The present invention provides selective excitation of a slab by RF signals of frequency compensated for in response to the error in the gradient magnetic field in the slice axis direction and phase encoding in the slice axis direction with the phase compensated for corresponding to the corrected frequency, in order to capture appropriate magnetic resonance signals in three dimensional scanning when there is an error in the slice gradient.
Claims8
A method for capturing magnetic resonance signals, using a three dimensional scanning to selectively excite a slab with a gradient magnetic field and RF signals applied in the slice axis and to phase encode in a slice axis direction, comprising the steps of:
- selectively exciting a slab by means of RF signals having a frequency compensated for in response to the error of the gradient magnetic field in the slice axis;
- and
- phase encoding in the slice axis in the compensated phase corresponding to the compensation for the frequency.
An apparatus for capturing magnetic resonance signals, using a three dimensional scanning by means of a static magnetic field, gradient magnetic field and high frequency magnetic field to selectively excite a slab with a gradient magnetic field and RF signals applied in the slice axis and to phase encode in a slice axis direction, comprising:
- a selectively exciting device for selectively exciting a slab by means of RF signals having a frequency compensated for in response to the error of the gradient magnetic field in the slice axis;
- and
- a phase encoding device for phase encoding in the slice axis in the compensated phase corresponding to the compensation for the frequency.
A computer-readable recording medium for storing a program to be executed on a computer, using a three dimensional scanning to selectively excite a slab with a gradient magnetic field and RF signals applied in the slice axis and to phase encode in a slice axis direction, said program comprising the steps of:
- selectively exciting a slab by means of RF signals having a frequency compensated for in response to the error of the gradient magnetic field in the slice axis;
- and
- phase encoding in the slice axis in the compensated phase corresponding to the compensation for the frequency.
A magnetic resonance imaging system, for capturing magnetic resonance imaging signals by using a three dimensional scanning by a device of a static magnetic field, gradient magnetic field and high frequency magnetic field to selectively excite a slab with a gradient magnetic field and RF signals applied in the slice axis and to phase encode in a slice axis direction, in order to reconstruct an image based on thus captured signals, the system for capturing magnetic resonance imaging signals comprising:
- a selectively exciting device for selectively exciting a slab by means of RF signals having a frequency compensated for in response to the error of the gradient magnetic field in the slice axis;
- and
- a phase encoding device for phase encoding in the slice axis in the compensated phase corresponding to the compensation for the frequency.
Dependencies are inferred from the claim text.