LORAKS makes better SENSE: Phase-constrained partial fourier SENSE reconstruction without phase calibration.

ABSTRACT:

Purpose

Parallel imaging and partial Fourier acquisition are two classical approaches for accelerated MRI. Methods that combine these approaches often rely on prior knowledge of the image phase, but the need to obtain this prior information can place practical restrictions on the data acquisition strategy. In this work, we propose and evaluate SENSE-LORAKS, which enables combined parallel imaging and partial Fourier reconstruction without requiring prior phase information.

Theory and methods

The proposed formulation is based on combining the classical SENSE model for parallel imaging data with the more recent LORAKS framework for MR image reconstruction using low-rank matrix modeling. Previous LORAKS-based methods have successfully enabled calibrationless partial Fourier par

SUBMITTER: Kim TH 

PROVIDER: S-EPMC5045741 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature