Rapid evaluation of left ventricular volume and mass without breath-holding using real-time interactive cardiac magnetic resonance imaging system.
J Am Coll Cardiol
; 38(2): 527-33, 2001 Aug.
Article
em En
| MEDLINE
| ID: mdl-11499748
ABSTRACT
OBJECTIVES:
The purpose of this study was to validate cardiac measurements derived from real-time cardiac magnetic resonance imaging (MRI) as compared with well-validated conventional cine MRI.BACKGROUND:
Although cardiac MRI provides accurate assessment of left ventricular (LV) volume and mass, most techniques have been relatively slow and required electrocardiogram (ECG) gating over many heart beats. A newly developed real-time MRI system allows continuous real-time dynamic acquisition and display without cardiac gating or breath-holding.METHODS:
Fourteen healthy volunteers and nine patients with heart failure underwent real-time and cine MRI in the standard short-axis orientation with a 1.5T MRI scanner. Nonbreath-holding cine MRI was performed with ECG gating and respiratory compensation. Left ventricular end-diastolic volume (LVEDV), left ventricular endsystolic volume (LVESV), ejection fraction (EF) and LV mass calculated from the images obtained by real-time MRI were compared to those obtained by cine MRI.RESULTS:
The total study time including localization for real-time MRI was significantly shorter than cine MRI (8.6 +/- 2.3 vs. 24.7 +/- 3.5 min, p < 0.001). Both imaging techniques yielded good quality images allowing cardiac measurements. The measurements of LVEDV, LVESV, EF and LV mass obtained with real-time MRI showed close correlation with those obtained with cine MRI (LVEDV r = 0.985, p < 0.001; LVESV r = 0.994, p < 0.001; EF r = 0.975, p < 0.001; LV mass r = 0.977, p < 0.001).CONCLUSIONS:
Real-time MRI provides accurate measurements of LV volume and mass in a time-efficient manner with respect to image acquisition.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Imageamento por Ressonância Magnética
/
Hipertrofia Ventricular Esquerda
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Disfunção Ventricular Esquerda
Tipo de estudo:
Diagnostic_studies
Limite:
Adult
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Aged
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Female
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Humans
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Male
/
Middle aged
Idioma:
En
Ano de publicação:
2001
Tipo de documento:
Article