Method for k-Space Reconstruction in Magnetic Resonance Inverse Imaging
OwnerFa-Hsuan Lininventor
Life of this patent
Estimating the term…
Abstract
A method for parallel magnetic resonance imaging (“pMRI”) that does not require the explicit estimation of a coil sensitivity map is provided. Individual coil images are reconstructed from undersampled scan data that is acquired with a radio frequency (RF) coil array having multiple coil channels. An inverse operator is formed from autocalibration scan (ACS) data, and is applied to the acquired scan data in order to produce reconstruction coefficients. Missing k-space lines in the undersampled scan data are synthesized by interpolating k-space lines in the acquired scan data using the reconstruction coefficients. From the acquired scan data and the synthesized missing k-space lines, individual coil images are reconstructed and combined to form an image of the subject.
Claims19
A method for reconstructing an image of a subject with a magnetic resonance imaging (MRI) system that includes a radio frequency (RF) coil array having multiple coil channels, the steps of the method comprising:
- a) acquiring, with the MRI system and from the subject, undersampled scan data in which certain k-space lines are not sampled;
- b) acquiring, with the MRI system and from the subject, auto-calibration scan (ACS) data;
- c) estimating the k-space lines not sampled from an under-determined linear system that includes the ACS data and the undersampled scan data;
- and
- d) reconstructing an image of the subject using the synthesized k-space lines and the acquired scan data.
Dependencies are inferred from the claim text.