Patent ID: 6256526
Filing Date: 2001-07-03
Classification: G01R

Abstract:
A method for view-angle tilt magnetic resonance imaging of an object having a localized magnetic susceptibility variation, the method comprising the steps of:a) applying to the object an excitation RF pulse simultaneous with a first field gradient to select a slice and determine an excitation profile;b) applying to the object a refocusing RF pulse simultaneous with a second field gradient to refocus the slice and determine a refocusing profile, wherein the refocusing RF pulse bandwidth is selected and the second field gradient magnitude is selected such that the excitation profile and the refocusing profile are substantially overlapping in a region outside the magnetic susceptibility variation;c) applying to the object a tilted readout field gradient such that a spin echo signal is produced from a volume of interest within a region of the magnetic susceptibility variation; andd) capturing the spin echo signal during a detection time;wherein the first field gradient, the second field gradient, and the detection time are selected to more completely refocus nuclear spins in the region outside the magnetic susceptibility variation, thereby providing magnetic susceptibility contrast with respect to the region of the magnetic susceptibility variation.