PURPOSE: We compared 3-Tesla (3-T) and 1.5-Tesla (1.5-T) cardiac magnetic resonance imaging (MRI) for the assessment of myocardial viability in nearly identical experimental conditions. MATERIALS AND METHODS: Thirty-five patients (mean age 63+/-11; 94.2% men) submitted to primary coronary angioplasty underwent both 3-T and 1.5-T cardiac MRI, which was considered the gold standard. Comparison was performed on the basis of the same viability imaging protocol, which included resting cine-MR [balanced fast-field echo (B-FFE) sequence] followed by contrast-enhanced MR to evaluate perfusion and delayed enhancement (DE). We then performed functional index measurements and visual estimation of kinesis, perfusion and DE referring to a 5-point scale. Image quality was assessed on the basis of signal to noise ratio (SNR) and contrast to noise ratio (CNR). RESULTS: We found nonsignificant differences between the two scanners (P=NS) in measuring the functional and viability parameters. Myocardial SNR was significantly higher with 3-T MRI compared with 1.5-T MRI (61.3% gain). Even though a loss of CNR was recorded in B-FFE and in first-pass perfusion sequences (12.4% and 23.7%, respectively), on DE images, we quantified the increase of SNR and CNR of infarction of 387.8% and 330%, respectively. CONCLUSIONS: We found that 3-T MRI showed high concordance with 1.5-T MRI in the evaluation of functional and viability parameters and provided better evidence of damaged myocardium.
3-Tesla MRI for the evaluation of myocardial viability: a comparative study with 1.5-Tesla MRI / Ligabue, Guido; Fiocchi, F; Ferraresi, S; Barbieri, A; Rossi, Rosario; Modena, Maria Grazia; Romagnoli, R; Torricelli, Pietro. - In: LA RADIOLOGIA MEDICA. - ISSN 0033-8362. - ELETTRONICO. - 113:3(2008), pp. 347-362. [10.1007/s11547-008-0256-7]
Data di pubblicazione: | 2008 | |
Titolo: | 3-Tesla MRI for the evaluation of myocardial viability: a comparative study with 1.5-Tesla MRI | |
Autore/i: | Ligabue, Guido; Fiocchi, F; Ferraresi, S; Barbieri, A; Rossi, Rosario; Modena, Maria Grazia; Romagnoli, R; Torricelli, Pietro | |
Autore/i UNIMORE: | ||
Digital Object Identifier (DOI): | http://dx.doi.org/10.1007/s11547-008-0256-7 | |
Rivista: | ||
Volume: | 113 | |
Fascicolo: | 3 | |
Pagina iniziale: | 347 | |
Pagina finale: | 362 | |
Codice identificativo ISI: | WOS:000255469900004 | |
Codice identificativo Scopus: | 2-s2.0-44249091409 | |
Codice identificativo Pubmed: | 18493772 | |
Citazione: | 3-Tesla MRI for the evaluation of myocardial viability: a comparative study with 1.5-Tesla MRI / Ligabue, Guido; Fiocchi, F; Ferraresi, S; Barbieri, A; Rossi, Rosario; Modena, Maria Grazia; Romagnoli, R; Torricelli, Pietro. - In: LA RADIOLOGIA MEDICA. - ISSN 0033-8362. - ELETTRONICO. - 113:3(2008), pp. 347-362. [10.1007/s11547-008-0256-7] | |
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