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Titolo:
A MAGNETIZATION-DRIVEN GRADIENT-ECHO PULSE SEQUENCE FOR THE STUDY OF MYOCARDIAL PERFUSION
Autore:
JUDD RM; REEDER SB; ATALAR E; MCVEIGH ER; ZERHOUNI EA;
Indirizzi:
JOHNS HOPKINS UNIV,143 MRI BLDG,600 N WOLFE ST BALTIMORE MD 21205 JOHNS HOPKINS MED INST BALTIMORE MD 21205
Titolo Testata:
Magnetic resonance in medicine
fascicolo: 2, volume: 34, anno: 1995,
pagine: 276 - 282
SICI:
0740-3194(1995)34:2<276:AMGPSF>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
CONTRAST AGENTS; BLOOD-VOLUME; SUSCEPTIBILITY; RELAXATION; MRI; TISSUES;
Keywords:
MYOCARDIAL PERFUSION; MAGNETIC RESONANCE IMAGING; CONTRAST AGENTS;
Tipo documento:
Note
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
30
Recensione:
Indirizzi per estratti:
Citazione:
R.M. Judd et al., "A MAGNETIZATION-DRIVEN GRADIENT-ECHO PULSE SEQUENCE FOR THE STUDY OF MYOCARDIAL PERFUSION", Magnetic resonance in medicine, 34(2), 1995, pp. 276-282

Abstract

A T-1-weighted imaging pulse sequence for contrast-based studies of myocardial perfusion is presented and evaluated in phantoms and in vivo. The sequence is similar to spoiled gradient-recalled echo equences except that nonselective preparatory RF pulses drive magnetization to steady state prior to image acquisition. Steady state is thus obtained in both tissue and blood resulting in a stable, homogeneous, and dark pre-contrast baseline. Tip angles and timings are chosen so that pixelintensity approximates a linear relation to 1/T-1. The dynamic range of signal response to contrast agent concentration is greater than that of an inversion-recovery fast low angle shot sequence. The sequence proposed should be useful for myocardial perfusion studies.

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Documento generato il 24/11/20 alle ore 08:28:04