Surface coil cardiac tagging and 31P spectroscopic localization with B1-insensitive adiabatic pulses.
Magn Reson Med
; 31(5): 541-5, 1994 May.
Article
em En
| MEDLINE
| ID: mdl-8015408
ABSTRACT
A technique is presented for MRI tagging in the presence of inhomogeneous B1 fields. A rectangular tagging grid is produced with B1-insensitive adiabatic pulses in a magnetization preparation period that precedes image acquisition. Phantom results demonstrate that the method is well-suited to surface coil experiments. The technique is applied to a canine model of myocardial ischemia to track the spatially dependent wall motion of the left ventricle during the cardiac cycle. Transmural 31P spectra are acquired from the same double-tuned surface coil, with tagging and spectroscopy performed for the first time, during normal, ischemic, and recovery conditions for the same animal.
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Base de dados:
MEDLINE
Assunto principal:
Imageamento por Ressonância Magnética
/
Aumento da Imagem
/
Espectroscopia de Ressonância Magnética
/
Reperfusão Miocárdica
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Isquemia Miocárdica
/
Miocárdio
Limite:
Animals
Idioma:
En
Ano de publicação:
1994
Tipo de documento:
Article