Diffusion-Weighted MR Images for Hyperacute Cerebral Infarction: Design of a Quick Volume Estimation Method for Hyperintensities
Journal of the Korean Radiological Society
;
: 7-14, 2007.
Artigo
em Coreano
| WPRIM
| ID: wpr-161831
ABSTRACT
PURPOSE:
To design a reliable and quick lesion volume estimation method for hyperintensities on diffusion-weighted images (DWI) for the evaluation of hyperacute stroke. MATERIALS ANDMETHODS:
Twenty patients with obvious high signal lesions seen on DWI in the middle cerebral artery territory due to acute ischemia were enrolled to evaluate the performance of four tentatively designed semi-quantitativemethods:
the 25-area method, the 20-area method, the 10-area method, and the modified 10-area method. Two radiologists performed the volume analyses using these methods. Intraclass correlation coefficients were calculated to compare the correlation between the reference values and the measured values and to evaluate the interobserver agreement of each method.RESULTS:
For the correlation between the measured value and the reference value, the performance of the modified 10-area method was the most powerful, with a value of 0.8981 and 0.8090 for observer 1 and 2, respectively. The interobserver agreement was satisfactory for both the 25-area method and the modified 10-area method, with a value of 0.9212 (95% CI 0.8123-0.9681) and 0.9063 (95% CI 0.7790-0.9618), respectively.CONCLUSION:
The performance of the modified 10-area method was satisfactory for both lesion volume estimation and interobserver correlation in the evaluation of an acute cerebral infarction by the use of DWI.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Valores de Referência
/
Infarto Cerebral
/
Artéria Cerebral Média
/
Acidente Vascular Cerebral
/
Isquemia
Limite:
Humanos
Idioma:
Coreano
Revista:
Journal of the Korean Radiological Society
Ano de publicação:
2007
Tipo de documento:
Artigo
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