Patent ID: 9572514
Date: 2017-02-21
CPC Classifications: A61B,G01R

Claim:
1. A method of acquiring time-resolved, three-dimensional, gradient echo magnetic resonance imaging data from a tissue, the method comprising: (a) defining, in a k (b) defining an ordered plurality of distinct k (c) for a first spiral trajectory in a first group of m different spiral trajectories associated with the first azimuthal angle, applying a radiofrequency pulse to the tissue and collecting k-space data sampled along the first spiral trajectory at a first of the plurality of k (d) repeating step (c) N (e) repeating step (d) for each remaining spiral trajectory in the first group of m different spiral trajectories and associating the data collected in steps (c)-(d) with a first of a plurality of n different times; and (f) repeating steps (c)-(e) for each of the n different groups of m spiral trajectories, thereby collecting data associated with n different times, respectively, and collecting data associated with all S spiral trajectories; wherein the data is sampled along the spiral trajectories so that the data is oversampled with constant density at the center of k-space and undersampled with variable density at the edge of k-space.