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Comparison of 1.5T and 3.0T diffusion-weighted imaging in the application of the complex adnexal masses in female patients / 实用放射学杂志
Journal of Practical Radiology ; (12): 792-796, 2015.
Artículo en Chino | WPRIM | ID: wpr-461749
ABSTRACT
Objective To compare signal characteristics and image qualities of MR diffusion-weighted imaging (DWI)at 1.5T and 3.0T in patients with the complex adnexal masses.Methods Magnetic resonance imaging including routine MRI and DWI(b=0 s/mm2 ,400 s/mm2 , 600 s/mm2 ,800 s/mm2 ,1 000 s/mm2 )of 1.5T (50 patients with 31 benign and 1 9 malignant lesions )and 3.0T (53 patients with 29 benign and 24 malignant lesions )were performed in 103 patients with histopathologically proved adnexal masses.The optimal b value was analyzed,and the apparent diffusion coefficient (ADC)value and signal intensity (SI)value and contrast to noise ratio (CNR)of solid and cystic components in adnexal masses from both 1.5T and 3.0T MR were respectively compared statistically.Results The 800 s/mm2 was the optimal b value in demonstrating adnexal masses at 1.5T and 3.0T.The CNR of solid and cystic components in adnexal masses were significantly higher at 3.0T than at 1.5T on all b values(all P =0.000).The difference in ADC value of solid lesions between 1.5T and 3.0T on all b values DWI had no statistically significant (all P >0.05),nor did the difference in SI value of solid lesions as well as ADC value of cystic lesions on b800 DWI(P >0.05).Conclusion MR diffusion-weighted imaging at 3.0T compared with 1.5T has quantitative and qualitative advantages of evaluating for adnexal masses,while the 800 s/mm2 is the optimal b value for both of them.

Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Tipo de estudio: Investigación cualitativa Idioma: Chino Revista: Journal of Practical Radiology Año: 2015 Tipo del documento: Artículo

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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Tipo de estudio: Investigación cualitativa Idioma: Chino Revista: Journal of Practical Radiology Año: 2015 Tipo del documento: Artículo