Clinical feasibility study for detection of myocardial oedema by a cine SSFP sequence in comparison to a conventional T2-weighted sequence

• Verfasst von: Steen, Henning [VerfasserIn]
• Verfasst von: Voss, Frederik [VerfasserIn]
• Verfasst von: André, Florian [VerfasserIn]
• Verfasst von: Lehrke, Stephanie [VerfasserIn]
• Verfasst von: Loßnitzer, Dirk [VerfasserIn]
• Verfasst von: Giannitsis, Evangelos [VerfasserIn]
• Verfasst von: Katus, Hugo [VerfasserIn]
• Titel: Clinical feasibility study for detection of myocardial oedema by a cine SSFP sequence in comparison to a conventional T2-weighted sequence
• Verf.angabe: Henning Steen, Frederik Voss, Florian André, Mirja Neizel, Tim Schäufele, Stephanie Lehrke, Dirk Lossnitzer, Evangelos Giannitsis, Hugo A. Katus
• Jahr: 2012
• Jahr des Originals: 2011
• Umfang: 7 S.
• Fussnoten: First Online: 30 October 2011 ; Gesehen am 20.09.2018
• Titel Quelle: Enthalten in: Clinical research in cardiology
• Ort Quelle: Berlin : Springer, 2006
• Jahr Quelle: 2012
• Band/Heft Quelle: 101(2012), 2, Seite 125-131
• ISSN Quelle: 1861-0692
• DOI: doi:10.1007/s00392-011-0373-5
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Magnetic resonance imaging
• Sach-SW: Myocardial infarction
• Sach-SW: Myocardial oedema
• Sach-SW: Steady-state free precession sequence
• K10plus-PPN: 1581137591

Abstract

Background: Cardiovascular magnetic resonance (CMR) T2-imaging is oedema-sensitive and can detect increased myocardial water content to potentially distinguish acute from chronic myocardial infarction (AMI/CMI). Currently applied conventional black-blood T2-weighted-turbo-spin-echo (T2-BB-TSE)-sequences cause various artefacts which limit their image quality and possibly hamper their interpretation. Image contrast of conventional cine steady-state free precession (SSFP)-sequences partly consists of T2 oedema-sensitive information. We therefore sought to prospectively evaluate SSFP cine-imaging to detect myocardial oedema and differentiate AMI from CMI. Methods: We examined 60 patients with AMI, 30 patients with CMI and 30 healthy volunteers using a 1.5 Tesla-MR whole body scanner. In a blinded fashion, myocardial oedema was assessed with T2-BB-TSE and SSFP-sequences, late gadolinium contrast-enhanced (LGE) CMR images being deemed as the standard reference for identification of infarcted myocardium. Assessment of presence of CMR detectable myocardial oedema was performed visually and quantitatively. P < 0.05 was considered statistically significant.ResultsThe contrast-to-noise ratio (CNR) in AMI patients was significantly higher (SSFP-STEMI and SSFP-NSTEMI: 19 ± 12 and 20 ± 14; T2-BB-TSE STEMI and T2-BB-TSE-NSTEMI: 33 ± 16 and 31 ± 13) than in CMI for both MR-sequences (SSFP-STEMI and NSTEMI: 3.5 ± 1.5 and T2-BB-TSE:9.3 ± 9.6, p for all <0.001). By visual analysis, SSFP images achieved a sensitivity of 96%, a specificity of 87%, positive and negative predictive values of 95 and 92% when compared to the existence of gadolinium contrast-enhanced scar imaging. Similarly, for T2-BB-TSE, sensitivity and specificity were 93 and 83% with positive and negative predictive values of 92 and 90%. Inter-observer variability was 0.90 for SSFP and 0.83 for T2-BB-TSE images. Conclusion: A standard clinical SSFP sequence is not inferior to T2-BB-TSE for the detection of myocardial oedema and can be used to reliably distinguish AMI from CMI. Especially in patients with insufficient T2-BB-TSE image quality, the SSFP sequence may be an alternative for the detection of myocardial oedema.