Abstract
Objectives
To assess the performance of gadoxetate dynamic contrast–enhanced (DCE) MRI of the liver and spleen for noninvasive diagnosis of portal hypertension (PH).
Methods
Thirty-five patients (M/F 22/13, mean age 55 years) with chronic liver disease who underwent hepatic venous pressure gradient (HVPG) measurements were prospectively enrolled in this IRB-approved study. All patients underwent multiparametric MRI including gadoxetate DCE-MRI acquisition. Model-based and model-free DCE-MRI analyses were performed. The correlation between DCE-MRI parameters and HVPG was assessed. ROC analysis was employed to determine the diagnostic performance of DCE-MRI parameters alone and in combination for prediction of PH and clinically significant (CS)PH (HVPG > 5 and ≥ 10 mmHg, respectively).
Results
Mean HVPG was 7.0 ± 5.0 mmHg (range 0–18 mmHg). Twenty-one (60%) patients had PH, of whom 9 had CSPH. Modeled liver uptake fraction fi and uptake rate ki and model-free parameters liver upslope and uptake were all significantly negatively correlated with HVPG (r range − 0.490 to − 0.398, p value range 0.003–0.018), while spleen interstitial fraction ve was significantly positively correlated with HVPG (r = 0.336, p = 0.048). For PH diagnosis, liver ki showed the best diagnostic performance with an AUC, sensitivity, and specificity of 0.74 (confidence interval (CI) 0.57–0.91), 71.4%, and 78.6%. The combination of liver ki and spleen ve was selected as the best classifier for diagnosis of CSPH with an AUC, sensitivity, and specificity of 0.87 (CI 0.75–0.99), 100%, and 73.1%.
Conclusions
Our results demonstrate the potential utility of hepatocyte uptake parameters and spleen interstitial fraction obtained with gadoxetate DCE-MRI for the diagnosis of PH and CSPH.
Key Points
• Liver uptake and spleen interstitial fraction estimates from gadoxetate DCE-MRI are significantly correlated with portal pressure measurements.
• Liver uptake rate shows good diagnostic performance for the diagnosis of portal hypertension.
• The combination of liver uptake rate with spleen interstitial fraction exhibits excellent diagnostic performance for the diagnosis of clinically significant portal hypertension.
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Abbreviations
- ART:
-
Arterial fraction
- CPA:
-
Collagen proportionate area
- CSPH:
-
Clinically significant portal hypertension
- DCE-MRI:
-
Dynamic contrast–enhanced MRI
- F a :
-
Arterial flow
- f i :
-
Uptake fraction
- F p :
-
Portal flow
- F t :
-
Total flow
- HVPG:
-
Hepatic venous pressure gradient
- k i :
-
Intracellular uptake rate
- MTT:
-
Mean transit time
- PH:
-
Portal hypertension
- ROI:
-
Region of interest
- SI:
-
Signal intensity
- TTP:
-
Time to peak
- v e :
-
Interstitial volume fraction
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This research was supported by NIDDK grant R01DK113272.
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The scientific guarantor of this publication is Bachir Taouli.
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The authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article.
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No complex statistical methods were necessary for this paper.
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Written informed consent was obtained from all subjects (patients) in this study.
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Institutional Review Board approval was obtained.
Study subjects or cohorts overlap
Twenty-five of the included patients have been previously reported in Hectors et al Splenic T1ρ as a noninvasive biomarker for portal hypertension. J Magn Reson Imaging. doi: 10.1002/jmri.27087.
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• observational
• performed at one institution
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Hectors, S.J., Bane, O., Kennedy, P. et al. Noninvasive diagnosis of portal hypertension using gadoxetate DCE-MRI of the liver and spleen. Eur Radiol 31, 4804–4812 (2021). https://doi.org/10.1007/s00330-020-07495-0
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DOI: https://doi.org/10.1007/s00330-020-07495-0