Gated-SPECT myocardial perfusion imaging as a complementary technique to magnetic resonance imaging in chronic myocardial infarction patients.
Rev Esp Cardiol (Engl Ed)
; 66(9): 721-7, 2013 Sep.
Article
em En
| MEDLINE
| ID: mdl-24773678
ABSTRACT
INTRODUCTION AND OBJECTIVES:
The aim of this study was to compare magnetic resonance and gated-SPECT myocardial perfusion imaging in patients with chronic myocardial infarction.METHODS:
Magnetic resonance imaging and gated-SPECT were performed in 104 patients (mean age, 61 [12] years; 87.5% male) with a previous infarction. Left ventricular volumes and ejection fraction and classic late gadolinium enhancement viability criteria (<75% transmurality) were correlated with those of gated-SPECT (uptake >50%) in the 17 segments of the left ventricle. Motion, thickening, and ischemia on SPECT were analyzed in segments showing nonviable tissue or equivocal enhancement features (50%-75% transmurality).RESULTS:
A good correlation was observed between the 2 techniques for volumes, ejection fraction (P<.05), and estimated necrotic mass (P<.01). In total, 82 of 264 segments (31%) with >75% enhancement had >50% single SPECT uptake. Of the 106 equivocal segments on magnetic resonance imaging, 68 (64%) had >50% uptake, 41 (38.7%) had normal motion, 46 (43.4%) had normal thickening, and 17 (16%) had ischemic criteria on SPECT.CONCLUSIONS:
A third of nonviable segments on magnetic resonance imaging showed >50% uptake on SPECT. Gated-SPECT can be useful in the analysis of motion, thickening, and ischemic criteria in segments with questionable viability on magnetic resonance imaging.Palavras-chave
Gammagrafía; Hibernación; Hibernation; Infarto de miocardio; LGE; LV; LVEF; MRI; Magnetic resonance; Myocardial infarction; PET; Resonancia magnética; SPECT; Scintigraphy; late gadolinium enhancement; left ventricle; left ventricular ejection fraction; magnetic resonance imaging; positron emission tomography; single-photon emission computed tomography
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Imageamento por Ressonância Magnética
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Tomografia Computadorizada de Emissão de Fóton Único
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Imagem de Perfusão do Miocárdio
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Infarto do Miocárdio
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article