Assessment of the myocardial area at risk: comparing T2-weighted cardiovascular magnetic resonance imaging with contrast-enhanced cine (CE-SSFP) imaging-a DANAMI3 substudy.
Eur Heart J Cardiovasc Imaging
; 20(3): 361-366, 2019 03 01.
Article
em En
| MEDLINE
| ID: mdl-30085055
ABSTRACT
AIMS:
Myocardial salvage following treatment for ST-segment elevation myocardial infarction is prognostic for morbidity and mortality. Studies with myocardial salvage as endpoint rely on valid assessment of the myocardial area at risk (AAR). T2-weighted cardiovascular magnetic resonance (CMR) imaging is the preferred method to assess the AAR. However, T2-weighted imaging can be of poor image quality and uninterpretable. Contrast-enhanced (CE) cine imaging can also show AAR and our aim was to investigate if CE-cine can replace T2-weighted imaging. Cine imaging is part of a standard CMR-protocol and implementing CE-cine imaging for assessment of the AAR would mean shorter investigation time. METHODS ANDRESULTS:
As a DANAMI-3 substudy, we performed successful dual imaging of the AAR in 166 participants using both T2-weighted short tau inversion recovery (T2-STIR) and CE-cine imaging. T2-STIR imaging was non-diagnostic in nine and CE-cine in one scan during the period. CE-cine measured 4.7% of left ventricle (LV) [95% confidence interval 3.2-6.2%] smaller AAR compared with T2-STIR images (P < 0.001). Visual analysis of a plot of infarct size vs. AAR showed an overestimation of the AAR when measured with T2-STIR images. There was no difference in AAR with CE-cine in an interobserver analysis of 46 scans [1.2 g (standard deviation 9.5), P = 0.42].CONCLUSIONS:
CE-cine imaging shows good internal consistency in assessment of the AAR. A visual inspection reveals possible overestimation of AAR with T2-STIR images. There is good interobserver agreement in the analysis of CE-cine imaging. CE-cine can replace T2-STIR imaging resulting in a more valid assessment of the myocardial AAR.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Interpretação de Imagem Assistida por Computador
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Angioplastia Coronária com Balão
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Imagem Cinética por Ressonância Magnética
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Infarto do Miocárdio com Supradesnível do Segmento ST
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article