Patent ID: 6472873
Filing Date: 2002-10-29
Classification: G01R

Abstract:
A method of capturing magnetic resonance signals, said method comprising the steps of:using a three dimensional scanning by selectively exciting a slab with a gradient magnetic field and RF signals applied in a slice axis, said RF signals having a frequency compensated for in response to an error of said gradient magnetic field; and phase encoding in said slice axis in a compensated phase corresponding to said frequency compensation; wherein said compensated phase is given by the following: Pâ€²=(1-2&it;â€ƒ&it;Î”&it;â€ƒ&it;zS)&it;Pwherein: Pâ€² is the phase after compensation; &Dgr;z is the apparent positional displacement of slab caused by frequency compensation; S is the slab thickness; and P is the phase before compensation.