Patent ID: 8368398
Filing Date: 2013-02-05
Classification: G01R

Abstract:
1. A non-transitory computer-readable medium storing computer executable instructions that when executed by a computer cause the computer to perform a method, the method comprising: controlling a parallel magnetic resonance imaging (pMRI) apparatus to produce a pulse sequence having an extended acquisition window, where the pulse sequence has overlapping, phase-encoding gradients and read gradients, and where the pulse sequence controls the pMRI apparatus to produce a trajectory having both Cartesian and non-Cartesian segments; controlling the pMRI apparatus to apply radio frequency (RF) energy to a volume to be imaged according to the pulse sequence and following the trajectory; controlling the pMRI apparatus to acquire magnetic resonance (MR) signal from the volume in response to the application of the RF energy, where the MR signal includes a first component associated with the Cartesian segment of the trajectory and where the MR signal includes a second component associated with the non-Cartesian segment of the trajectory, and where the MR signal satisfies the Nyquist criteria in at least one region of the volume; calibrating a partially parallel acquisition reconstruction process using Nyquist-satisfying data from the second component, where the Nyquist-satisfying data is acquired from the at least one region; reconstructing an image from the MR signal using the calibrated reconstruction process; and providing the image.