Premium
MRI cardiac tagging using a sinc‐modulated RF pulse train
Author(s) -
Wu Ed X.,
Towe Christopher W.,
Tang Haiying
Publication year - 2002
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.10190
Subject(s) - sinc function , imaging phantom , pulse (music) , nuclear magnetic resonance , pulse wave , materials science , pulse width modulation , bandwidth (computing) , saturation (graph theory) , radio frequency , computer science , physics , biomedical engineering , optics , chemistry , mathematics , laser , medicine , telecommunications , voltage , quantum mechanics , detector , computer vision , combinatorics
A method of spatial modulation of magnetization using the RF pulse train is described for improved cardiac tagging. The method is based on a sinc‐modulated RF pulse train in the presence of constant gradient. Such an RF pulse train yields a rectangular profile of saturated magnetization, and the bandwidth of the sinc envelope controls the width of the saturation tag. Compared to DANTE and SPAMM tagging techniques, this method offers sharper‐edged tags and the ability to change the ratio of tag width to tag separation. The approach was implemented on a 9.4 T vertical bore NMR system and demonstrated with both phantom and in vivo mouse heart studies. Magn Reson Med 48:389–393, 2002. © 2002 Wiley‐Liss, Inc.