Applications of reduced‐encoding MR imaging with generalized‐series reconstruction (RIGR)

Abstract

The RIGR (reduced‐encoding imaging by generalized‐series reconstruction) technique for magnetic resonance imaging uses a high‐resolution reference image as the basis set for the reconstruction of subsequent images acquired with a reduced number of phase‐encoding steps. The technique allows increased temporal resolution in applications requiring repeated acquisitions, such as the dynamic imaging of contrast agent biodistribution, and in intrinsically time‐consuming protocols such as the acquisition of a series of T2‐weighted images. Several examples are presented to demonstrate that a four‐ to eightfold improvement in spatial or temporal resolution can be achieved with this technique. Copyright © 1993 Wiley‐Liss, Inc., A Wiley Company