Quantitative evaluation of non-ischemic dilated cardiomyopathy by late iodine enhancement using rapid kV switching dual-energy computed tomography: A feasibility study.
J Cardiovasc Comput Tomogr
; 13(2): 148-156, 2019.
Article
en En
| MEDLINE
| ID: mdl-30392925
ABSTRACT
OBJECTIVES:
The aim of this study was to evaluate the feasibility of myocardial iodine density and extracellular volume fraction (ECV) from delayed iodine density images using dual-energy computed tomography (DECT) for differentiation between non-ischemic dilated cardiomyopathy (NIDCM) patients and normal subjects.METHODS:
Forty-six subjects were imaged, including 35 normal subjects and 11 patients with NIDCM. All subjects underwent myocardial delayed enhancement (MDE) imaging on rapid-kVp switching DECT. Global and segmental iodine density and ECV were calculated from MDE images. Histogram analysis was also performed. Receiver-operator characteristic (ROC) analysis was used to determine the cut-off value and diagnostic performances in differentiating NIDCM patients from normal subjects.RESULTS:
Global iodine density and ECV were significantly higher in NIDCM compared with normal controls (iodine 14.19⯱â¯3.90 vs. 10.69⯱â¯1.88 in 100⯵g/cm3, pâ¯=â¯0.015; ECV 31.35⯱â¯2.53% vs. 26.62⯱â¯2.69%, pâ¯<â¯0.001). In histogram analyses, kurtosis was higher in NIDCM than in controls (0.47⯱â¯0.46 vs. 1.26⯱â¯0.88, pâ¯<â¯0.001). On segmental analysis, ECV showed higher values in NIDCM than in controls for all segments. ECV could differentiate between normal myocardium and NIDCM with 91.0% sensitivity and 86.0% specificity at a cut-off of 28.82% (area under the curve of ROC, 0.906). Iodine density could differentiate between normal myocardium and NIDCM with 91% sensitivity and 60% specificity at a cut-off of 11.18 (area under the curve of ROC, 0.812).CONCLUSIONS:
Iodine density and ECV values from DECT may provide indices offering high diagnostic accuracy for discriminating between NIDCM and normal myocardium.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Yopamidol
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Cardiomiopatía Dilatada
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Medios de Contraste
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Tomografía Computarizada Multidetector
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Miocardio
Tipo de estudio:
Evaluation_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Límite:
Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
J Cardiovasc Comput Tomogr
Asunto de la revista:
ANGIOLOGIA
/
CARDIOLOGIA
/
RADIOLOGIA
Año:
2019
Tipo del documento:
Article