Comparison of magnetic resonance feature tracking for systolic and diastolic strain and strain rate calculation with spatial modulation of magnetization imaging analysis.
J Magn Reson Imaging
; 41(4): 1000-12, 2015 Apr.
Article
en En
| MEDLINE
| ID: mdl-24677420
ABSTRACT
PURPOSE:
To compare cardiovascular magnetic resonance-feature tracking (CMR-FT) with spatial modulation of magnetization (SPAMM) tagged imaging for the calculation of short and long axis Lagrangian strain measures in systole and diastole. MATERIALS ANDMETHODS:
Healthy controls (n = 35) and patients with dilated cardiomyopathy (n = 10) were identified prospectively and underwent steady-state free precession (SSFP) cine imaging and SPAMM imaging using a gradient-echo sequence. A timed offline analysis of images acquired at identical horizontal long and short axis slice positions was performed using CMR-FT and dynamic tissue-tagging (CIMTag2D). Agreement between strain and strain rate (SR) values calculated using these two different methods was assessed using the Bland-Altman technique.RESULTS:
Across all participants, there was good agreement between CMR-FT and CIMTag for calculation of peak systolic global circumferential strain (-22.7 ± 6.2% vs. -22.5 ± 6.9%, bias 0.2 ± 4.0%) and SR (-1.35 ± 0.42 1/s vs. -1.22 ± 0.42 1/s, bias 0.13 ± 0.33 1/s) and early diastolic global circumferential SR (1.21 ± 0.44 1/s vs. 1.07 ± 0.30 1/s, bias -0.14 ± 0.34 1/s) at the subendocardium. There was satisfactory agreement for derivation of peak systolic global longitudinal strain (-18.1 ± 5.0% vs. -16.7 ± 4.8%, bias 1.3 ± 3.8%) and SR (-1.04 ± 0.29 1/s vs. -0.95 ± 0.32 1/s, bias 0.09 ± 0.26 1/s). The weakest agreement was for early diastolic global longitudinal SR (1.10 ± 0.40 1/s vs. 0.67 ± 0.32 1/s, bias -0.42 ± 0.40 1/s), although the correlation remained significant (r = 0.42, P < 0.01). CMR-FT generated these data over four times quicker than CIMTag.CONCLUSION:
There is sufficient agreement between systolic and diastolic strain measures calculated using CMR-FT and myocardial tagging for CMR-FT to be considered as a potentially feasible and rapid alternative.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Interpretación de Imagen Asistida por Computador
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Cardiomiopatía Dilatada
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Disfunción Ventricular
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Imagen por Resonancia Cinemagnética
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Diagnóstico por Imagen de Elasticidad
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Ventrículos Cardíacos
Tipo de estudio:
Diagnostic_studies
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Etiology_studies
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Prognostic_studies
Límite:
Adult
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Humans
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Middle aged
Idioma:
En
Revista:
J Magn Reson Imaging
Asunto de la revista:
DIAGNOSTICO POR IMAGEM
Año:
2015
Tipo del documento:
Article
País de afiliación:
Reino Unido