A new pulse sequence to visualize slow flow

Magma
K-I GjesdalJ-T Geitung

Abstract

The purpose of this paper is to present a new pulse sequence for visualizing slow flow. The new sequence consists of an initial Stejskal-Tanner flow sensitization part followed by a DEFT pulse and a spoiler gradient. A single-shot TSE readout train is then applied to sample the NMR signal. The sequence was initially tested using a simple flow phantom. To verify potential clinical use, both flow-sensitive MRCP and cerebrospinal fluid (CSF) images were produced. The phantom study proved the sequence sensitivity to flow in the range 0-1 cm/s. bVE-factors 1.5, 3, 6 and 12 were chosen. Within this flow velocity range, the signal dropped as predicted theoretically. This indicates that the method can be used to quantify flow. All anatomical features seen in a standard MRCP sequence were identified and the methods sensitivity to CSF flow was demonstrated by sagital images of the head. A new pulse sequence sensitive to slow flow has been developed.

References

Sep 1, 1992·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·D G NorrisD Leibfritz
Jan 1, 1989·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·C L DumoulinW Wagle
Dec 1, 1984·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·C M van Uijen, J H den Boef
Nov 5, 1997·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·D C Alsop
Nov 5, 1997·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·F Schick
Jan 5, 2002·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·James G PipeKirsten P Forbes
May 31, 2002·Journal of Magnetic Resonance·Patrick Le Roux
Jul 12, 2002·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Mark E Bastin, Patrick Le Roux
Oct 3, 2003·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·M MarklN J Pelc
Jul 30, 2004·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Mary T DraneyCharles A Taylor

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