Diffusion tensor imaging of skeletal muscle--correlation of fractional anisotropy to muscle power.
Rofo
; 185(9): 857-61, 2013 Sep.
Article
em En
| MEDLINE
| ID: mdl-23888473
ABSTRACT
PURPOSE:
Recent DTI studies demonstrated the possibility of fiber geometry visualization in skeletal muscle. We tested for an association between muscle power and standard DTI parameters, e. g. fractional anisotropy. MATERIALS ANDMETHODS:
Maximal muscle power (Lmax) of the soleus muscle was determined in 11 healthy subjects. Subsequently DTI was performed and standard parameters (fractional anisotropy - FA, mean diffusivity - MD, parallel diffusivity - PD, radial diffusivity - RD) were extracted in an ROI of the soleus muscle.RESULTS:
We found a signficant association of Lmax with FA (neg. correlation r = -0.85, p = 0.0015) and RD (pos. correlation r = 0.80, p = 0.047). There was no signficant association of MD or PD.CONCLUSION:
Maximum muscle power is an indirect measure of fiber type distribution. The correlation between muscle power and DTI parameters can be explained by differences in fiber diameter and differences in the intracellular microstructure of type-1 and type-2 fibers. DTI should be evaluated as a tool for non-invasive quantification of fiber type distribution in skeletal muscle.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Interpretação de Imagem Assistida por Computador
/
Músculo Esquelético
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Imagem de Difusão por Ressonância Magnética
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Força Muscular
Limite:
Adult
/
Humans
/
Male
Idioma:
En
Revista:
Rofo
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Alemanha