✦ LIBER ✦

Iterative GRAPPA (iGRAPPA) for improved parallel imaging reconstruction

✍ Scribed by Tiejun Zhao; Xiaoping Hu

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 308 KB
Volume: 59
Category: Article
ISSN: 0740-3194
DOI: 10.1002/mrm.21370

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✦ Synopsis

Abstract

In this work an iterative reconstruction method based on generalized autocalibrating partially parallel acquisitions (GRAPPA) reconstruction is introduced. In the new method the reconstructed lines are used to reestimate and refine the weights from all the acquired data by applying the GRAPPA procedure iteratively with regularization. Both phantom and in vivo MRI experiments demonstrated that, compared to GRAPPA, the iterative approach reduces parallel imaging artifacts and permits high‐quality image reconstruction with a relatively small number of calibration lines and slight changes of GRAPPA weights. Magn Reson Med 59:903–907, 2008. © 2008 Wiley‐Liss, Inc.

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