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ECR 2019 / C-1761
Which number of b-value is better for accurate calculation of virtual MR elastography?
Congress: ECR 2019
Poster No.: C-1761
Type: Scientific Exhibit
Keywords: Technical aspects, Physics, MR-Diffusion/Perfusion, MR, Elastography, MR physics, Liver, Abdomen, Cirrhosis
Authors: Y. Matsumoto1, M. Harada2, Y. Kanazawa2, M. Otomo2, D. E. Amgalan1, G. ariunbold1, S. takamastu3, Y. Yamashita3; 1Tokushima-shi/JP, 2Tokushima/JP, 3Otawara-shi/JP


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.

Fig. 7
References: - Tokushima-shi/JP
Fig. 8
References: - Tokushima-shi/JP


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.


Fig. 9
References: - Tokushima-shi/JP


Fig. 10
References: - Tokushima-shi/JP
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