The role of first pass and delayed contrast-enhancement magnetic resonance imaging in patients with myocardial infarction / 中华心血管病杂志
Chinese Journal of Cardiology
; (12): 1027-1030, 2005.
Article
en Zh
| WPRIM
| ID: wpr-253016
Biblioteca responsable:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the role of contrast-enhancement magnetic resonance imaging (CeMRI) in patients with myocardial infarction (MI).</p><p><b>METHODS</b>There were twenty-three patients enrolled in this study. After dynamic observation, there were 20 patients who were diagnosed as MI. All those patients underwent coronary artery angiography and CeMRI. MRI was performed with a 1.5-T magnet (AVANTO, SIMENS). After tagged images were acquired, the patients received an intravenous bolus of 0.1 mmol/kg Gd-DTPA at a rate of 5 ml/s. A first-pass perfusion scan was acquired simultaneously with a bolus injection. A second bolus of 0.3 mmol/kg Gd-DTPA was given following the first-pass images. Delayed images were acquired 5 minutes after the second bolus by using an inversion-recovery prepared gated fast-gradient echo-pulse sequence.</p><p><b>RESULTS</b>Hypoenhancement was seen in 20 patients at the first-pass perfusion at the myocardial infarction site, while hyperenhancement was seen at delayed CeMRI. Myocardial infarction area in delayed CeMRI was 16.58% +/- 9.73%, which was correlated positively with peak CK and cTnT (r = 0.821, P < 0.01 and r = 0.565, P < 0.05), respectively. The ejection fraction (EF) detected by MRI was 0.46 +/- 0.13, while the left ventricular EF (LVEF) detected by left ventriculography was 0.49 +/- 0.16. There was no difference between two parameters.</p><p><b>CONCLUSIONS</b>CeMRI may play an important role in the diagnosis and prognosis of patients with MI.</p>
Texto completo:
1
Base de datos:
WPRIM
Asunto principal:
Imagen por Resonancia Magnética
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Aumento de la Imagen
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Medios de Contraste
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Gadolinio DTPA
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Diagnóstico
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Métodos
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Infarto del Miocardio
Tipo de estudio:
Diagnostic_studies
Límite:
Adult
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Aged
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Female
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Humans
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Male
Idioma:
Zh
Revista:
Chinese Journal of Cardiology
Año:
2005
Tipo del documento:
Article