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Titolo:
Three-dimensional gadolinium-enhanced coronary magnetic resonance angiography: Initial experience
Autore:
Zheng, J; Li, DB; Bae, KT; Haacke, EM;
Indirizzi:
Washington Univ, Sch Med, Mallinckrodt Inst Radiol, St Louis, MO 63130 USAWashington Univ St Louis MO USA 63130 Inst Radiol, St Louis, MO 63130 USA
Titolo Testata:
JOURNAL OF CARDIOVASCULAR MAGNETIC RESONANCE
fascicolo: 1, volume: 1, anno: 1999,
pagine: 33 - 41
SICI:
1097-6647(1999)1:1<33:TGCMRA>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
3-DIMENSIONAL MR-ANGIOGRAPHY; BREATH-HOLD; RENAL-ARTERIES; CONTRAST; TIME; OPTIMIZATION; ACQUISITION; REDUCTION; ORDER; AORTA;
Keywords:
contrast agents; coronary artery; MR angiography;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Zheng, J Washington Univ, Sch Med, Mallinckrodt Inst Radiol, St Louis, MO 63130 USA Washington Univ St Louis MO USA 63130 ol, St Louis, MO 63130 USA
Citazione:
J. Zheng et al., "Three-dimensional gadolinium-enhanced coronary magnetic resonance angiography: Initial experience", J CARD M RE, 1(1), 1999, pp. 33-41

Abstract

We present our initial experience on first-pass gadolinium-enhanced corollary artery magnetic resonance angiography (MRA). Three-dimensional segmented gradient-echo sequences were developed to image coronary arteries within a single breathhold during the injection of a double-dose contrast agent. Comparisons were made between a short TR of 2.7-msec (n = 5) and a long TR of 5.0-msec (n = 3) sequences in terms of the signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR). An in-plane resolution of roughly I X I mm(2) was achieved. Dramatic vascular signal enhancement by a factor of 3-5 was obtained in volunteers following the contrast agent injection, allowing for clear visualization of proximal corollary arteries. The longer TR scansgenerally performed better in terms of SNR and CNR improvement (approximately 50%) but allowed for less covet-age. These preliminary results suggest that gadolinium-enhanced MRA is a useful tool to study proximal coronary arteries with breathhold, but for a larger coverage, a multiple close approach may be necessary.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 22:36:42