Patent ID: 6683453
Filing Date: 2004-01-27
Classification: G01R

Abstract:
A magnetic resonance imaging apparatus comprising:an RF system for emitting radio frequency excitation pulses into an examination subject and for receiving magnetic resonance signals resulting therefrom; a gradient system for generating a plurality of gradients; and a system computer connected to said RF system and to said gradient system for producing an EPI pulse sequence having an excitation pulse for exciting nuclear spins with a flip angle of less than 90Â°, a slice selection gradient in slice selection direction, a phase encoding gradient, and an oscillating read out gradient for reading out a plurality of gradient echoes after said excitation pulse, and for obtaining a spatially resolved navigator rod for correcting motion artifacts in subsequently obtained magnetic resonance images of said subject, by reading out signals from a single slice produced by excitation of said nuclear spins which is made selective by said slice selection gradient and said flip angle, with phase encoding in a direction perpendicular to said slice selection direction and perpendicular to said read out direction.