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Comparison of magnetic resonance elastography and diffusion-weighted imaging for staging hepatic fibrosis.

Zou LQ, Chen J, Pan L, Jiang JZ, Xing W - Chin. Med. J. (2015)

Bottom Line: The area under the receiver operating characteristic curve values of LS were significantly larger than those of DWI were for discriminating two stages of HF (0.979 vs. 0.712 for ≥ S1, 0.922 vs. 0.699 for ≥ S2).MRE showed higher specificity for predicting all stages of HF compared to DWI.MRE more strongly correlated with the HF stages than DWI and is more specific in predicting all HF stages.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Affiliated Third Hospital of Suzhou University, Changzhou, Jiangsu 213003, China.

ABSTRACT

Background: To compare the diagnostic values of magnetic resonance elastography (MRE) and diffusion-weighted imaging (DWI) in staging hepatic fibrosis (HF) in an animal model.

Methods: This study consisted of 44 rabbits served as HF group and 9 normal rabbits. HF group was divided into two subgroups: Group A (n = 32) and Group B (n = 12). Rabbits in Group B were served as a complementary group when rabbits in Group A suddenly died during the study. Rabbits from control and Group A underwent abdominal MR imaging (MRI), MRE, and DWI. In Group A, random eight rabbits underwent MRI examinations at 4, 5, 6, 10 weeks after carbon tetrachloride oil subcutaneous injection. Liver stiffness (LS) and apparent diffusion coefficient (ADC) values of liver parenchyma were measured. The diagnostic performance of MRE and DWI for staging HF was compared using the receiver operating characteristic curve analysis on the basis of the histopathological analysis of HF.

Results: Significant differences of LS and DWI values were present among HF stages (P < 0.005). The LS values measured on MRE (r = 0.838, P < 0.001) were more strongly correlated with the HF stages than with ADC values (r = -0.527, P < 0.001). The area under the receiver operating characteristic curve values of LS were significantly larger than those of DWI were for discriminating two stages of HF (0.979 vs. 0.712 for ≥ S1, 0.922 vs. 0.699 for ≥ S2). MRE showed higher specificity for predicting all stages of HF compared to DWI.

Conclusions: MRE more strongly correlated with the HF stages than DWI and is more specific in predicting all HF stages.

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Related in: MedlinePlus

The receiver operating characteristic (ROC) analysis on evaluating the diagnostic value of magnetic resonance elastography and diffusion-weighted imaging (≥S1, A;≥S2, B;≥S3, C;S4, D). The areas under ROC curve for liver stiffness values were greater than those for the apparent diffusion coefficient values in all hepatic fibrosis stages (≥S1, 0.922 vs. 0.699 for ≥S2, 0.949 vs. 0.867 for ≥S3, and 0.843 vs. 0.795 for S4).
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Figure 7: The receiver operating characteristic (ROC) analysis on evaluating the diagnostic value of magnetic resonance elastography and diffusion-weighted imaging (≥S1, A;≥S2, B;≥S3, C;S4, D). The areas under ROC curve for liver stiffness values were greater than those for the apparent diffusion coefficient values in all hepatic fibrosis stages (≥S1, 0.922 vs. 0.699 for ≥S2, 0.949 vs. 0.867 for ≥S3, and 0.843 vs. 0.795 for S4).

Mentions: The areas under ROC curve for LS values were greater than those for the ADC values in all HF stages (0.979 vs. 0.712 for ≥ S1, 0.922 vs. 0.699 for ≥ S2, 0.949 vs. 0.867 for ≥ S3, and 0.843 vs. 0.795 for S4) [Figure 7]. But no significant differences of AUCs for LS values and ADC values were present in two groups (≥S3 and S4). The cut-off values of LS and ADC values in all stage grouping were listed in Tables 1 and 2.


Comparison of magnetic resonance elastography and diffusion-weighted imaging for staging hepatic fibrosis.

Zou LQ, Chen J, Pan L, Jiang JZ, Xing W - Chin. Med. J. (2015)

The receiver operating characteristic (ROC) analysis on evaluating the diagnostic value of magnetic resonance elastography and diffusion-weighted imaging (≥S1, A;≥S2, B;≥S3, C;S4, D). The areas under ROC curve for liver stiffness values were greater than those for the apparent diffusion coefficient values in all hepatic fibrosis stages (≥S1, 0.922 vs. 0.699 for ≥S2, 0.949 vs. 0.867 for ≥S3, and 0.843 vs. 0.795 for S4).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4834772&req=5

Figure 7: The receiver operating characteristic (ROC) analysis on evaluating the diagnostic value of magnetic resonance elastography and diffusion-weighted imaging (≥S1, A;≥S2, B;≥S3, C;S4, D). The areas under ROC curve for liver stiffness values were greater than those for the apparent diffusion coefficient values in all hepatic fibrosis stages (≥S1, 0.922 vs. 0.699 for ≥S2, 0.949 vs. 0.867 for ≥S3, and 0.843 vs. 0.795 for S4).
Mentions: The areas under ROC curve for LS values were greater than those for the ADC values in all HF stages (0.979 vs. 0.712 for ≥ S1, 0.922 vs. 0.699 for ≥ S2, 0.949 vs. 0.867 for ≥ S3, and 0.843 vs. 0.795 for S4) [Figure 7]. But no significant differences of AUCs for LS values and ADC values were present in two groups (≥S3 and S4). The cut-off values of LS and ADC values in all stage grouping were listed in Tables 1 and 2.

Bottom Line: The area under the receiver operating characteristic curve values of LS were significantly larger than those of DWI were for discriminating two stages of HF (0.979 vs. 0.712 for ≥ S1, 0.922 vs. 0.699 for ≥ S2).MRE showed higher specificity for predicting all stages of HF compared to DWI.MRE more strongly correlated with the HF stages than DWI and is more specific in predicting all HF stages.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Affiliated Third Hospital of Suzhou University, Changzhou, Jiangsu 213003, China.

ABSTRACT

Background: To compare the diagnostic values of magnetic resonance elastography (MRE) and diffusion-weighted imaging (DWI) in staging hepatic fibrosis (HF) in an animal model.

Methods: This study consisted of 44 rabbits served as HF group and 9 normal rabbits. HF group was divided into two subgroups: Group A (n = 32) and Group B (n = 12). Rabbits in Group B were served as a complementary group when rabbits in Group A suddenly died during the study. Rabbits from control and Group A underwent abdominal MR imaging (MRI), MRE, and DWI. In Group A, random eight rabbits underwent MRI examinations at 4, 5, 6, 10 weeks after carbon tetrachloride oil subcutaneous injection. Liver stiffness (LS) and apparent diffusion coefficient (ADC) values of liver parenchyma were measured. The diagnostic performance of MRE and DWI for staging HF was compared using the receiver operating characteristic curve analysis on the basis of the histopathological analysis of HF.

Results: Significant differences of LS and DWI values were present among HF stages (P < 0.005). The LS values measured on MRE (r = 0.838, P < 0.001) were more strongly correlated with the HF stages than with ADC values (r = -0.527, P < 0.001). The area under the receiver operating characteristic curve values of LS were significantly larger than those of DWI were for discriminating two stages of HF (0.979 vs. 0.712 for ≥ S1, 0.922 vs. 0.699 for ≥ S2). MRE showed higher specificity for predicting all stages of HF compared to DWI.

Conclusions: MRE more strongly correlated with the HF stages than DWI and is more specific in predicting all HF stages.

Show MeSH
Related in: MedlinePlus