Patent ID: 8441257
Filing Date: 2013-05-14
Classification: G01R

Abstract:
1. A method for producing a series of image frames of a moving subject using a magnetic resonance imaging (MRI) system, the steps comprising: a) acquiring MR signals to form an image data set for each image frame by performing a pulse sequence with the MRI system, the pulse sequence including: a)i) a preparatory pulse sequence comprised of a non-selective RF inversion pulse that inverts spin magnetization throughout the field of view of the image frames and a selective RF inversion pulse that re-inverts spin magnetization in a pool of moving spins flowing into a region of interest within a field of view of each image frame; and a)ii) a plurality of image data acquisition pulse sequences performed in sequence after the preparatory pulse sequence to acquire the MR signals for the image data set for each image frame as the inverted spin magnetization in the field of view of each image frame recovers; b) reconstructing the image frames from the acquired image frame data sets; and c) displaying in sequence the reconstructed image frames to depict the flowing spins having re-inverted spin magnetization as they flow throughout the region of interest.