Whole-body MRI-based fat quantification: a comparison to air displacement plethysmography.
J Magn Reson Imaging
; 40(6): 1437-44, 2014 Dec.
Article
en En
| MEDLINE
| ID: mdl-24449401
ABSTRACT
PURPOSE:
To demonstrate the feasibility of an algorithm for MRI whole-body quantification of internal and subcutaneous fat and quantitative comparison of total adipose tissue to air displacement plethysmography (ADP). MATERIALS ANDMETHODS:
For comparison with ADP, whole-body MR data of 11 volunteers were obtained using a continuously moving table Dixon sequence. Resulting fat images were corrected for B1 related intensity inhomogeneities before fat segmentation.RESULTS:
The performed MR measurements of the whole body provided a direct comparison to ADP measurements. The segmentation of subcutaneous and internal fat in the abdomen worked reliably with an accuracy of 98%. Depending on the underlying model for fat quantification, the resultant MR fat masses represent an upper and a lower limit for the true fat masses. In comparison to ADP, the results were in good agreement with ρ ≥ 0.97, P < 0.0001.CONCLUSION:
Whole-body fat quantities derived noninvasively by using a continuously moving table Dixon acquisition were directly compared with ADP. The accuracy of the method and the high reproducibility of results indicate its potential for clinical applications.Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Pletismografía Total
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Imagen por Resonancia Magnética
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Tejido Adiposo
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Imagenología Tridimensional
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Imagen de Cuerpo Entero
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Adiposidad
Tipo de estudio:
Diagnostic_studies
/
Evaluation_studies
/
Prognostic_studies
Límite:
Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
J Magn Reson Imaging
Asunto de la revista:
DIAGNOSTICO POR IMAGEM
Año:
2014
Tipo del documento:
Article
País de afiliación:
Alemania