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SSFP and GRE phase contrast imaging using a three-echo readout

✍ Scribed by Jon-Fredrik Nielsen; Krishna S. Nayak

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
258 KB
Volume
58
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

A technique for rapid in‐plane phase‐contrast imaging with high signal‐to‐noise ratio (SNR) is described. Velocity‐encoding is achieved by oscillating the readout gradient, such that each 2DFT phase‐encode is acquired three times following a single RF slice‐selective excitation. Three images are reconstructed, from which both flow velocity and local resonance offset are calculated. This technique is compatible with both gradient‐recalled echo (GRE) and balanced steady‐state free precession (SSFP) imaging using a single steady‐state. The proposed technique enables 1D velocity mapping with 40% higher temporal resolution and 80% higher SNR, compared to conventional PC‐MRI using bipolar velocity‐encoding gradient pulses. Magn Reson Med, 2007. © 2007 Wiley‐Liss, Inc.

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