[Delayed myocardial enhancement: Optimizing the MR imaging protocol]. / Comment j'optimise la technique d'IRM à la recherche d'un rehaussement tardif?
J Radiol
; 91(5 Pt 2): 598-601, 2010 May.
Article
em Fr
| MEDLINE
| ID: mdl-20657364
ABSTRACT
The purpose of this article is to 1) review the basic models characterizing myocardial enhancement on MR and CT, 2) review the main characteristics of available iodinated and Gadolinium-based contrast agents and, 3) review the literature on emerging MR contrast agents to assess myocardial viability. The intensity of enhancement following infarction is the result of two processes 1) the increased interstitial space (15 + or - 2% in normal myocardium and 80 + or - 3% in necrotic tissue) secondary to cell necrosis and 2) perfusion abnormalities secondary to absent revascularization or impaired microvascularization. The equation described by Kety was used to create models of contrast material kinetics within myocardium or enhancement of the different components of the myocardium (viable myocardium, necrosed myocardium, fibrosis, with no-reflow zone, hibernating or stunned myocardium).
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Imageamento por Ressonância Magnética
/
Aumento da Imagem
/
Infarto do Miocárdio
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
Fr
Revista:
J Radiol
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
França