|ECR 2019 / C-1761|
|Which number of b-value is better for accurate calculation of virtual MR elastography?|
The results of this study are indicated in Figure 2 and 3.
The signal attenuation derived from the three b-values, ADC0-1500 and D* against the measured shear stiffness, showed good correlation in comparison to that from the use of five b-values. In the fast diffusion component of three b-value, D* resulted in good correlation while there was no correlation on the ADC0-200. There was no correlation between the measured shear stiffness and the slow diffusion component, the ADC200-1500, and D.
In each of the results from the linear regression of the estimated parameter maps calculated from the five b-value, a significant correlation, (R< ‒0.67), was observed between ADC0‒200, D, and α, and the measured shear stiffness.
In addition, the relationship between the D and the measured shear stiffness had the best correlation for five b-value in this study (R=-0.8).
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Moreover, the comparison between conventional shear stiffness and virtual shear stiffness is shown in Figure 4 and 5, demonstrating a correlation on each of the estimated parameters.
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