Multiparametric FDG-PETMRI of Hepatocellular Carcinoma: Initial Experience
Joint Authors
Hectors, Stefanie J.
Wagner, Mathilde
Besa, Cecilia
Huang, Wei
Taouli, Bachir
Source
Contrast Media & Molecular Imaging
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-03
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Purpose.
To compare multiparametric (mp)FDG-PET/MRI metrics between hepatocellular carcinoma (HCC) and liver parenchyma and to assess the correlation between mpMRI and FDG-PET standard uptake values (SUVs) in liver parenchyma and HCC.
Methods.
This prospective, institutional review board-approved study enrolled 15 patients (M/F 12/3; mean age 61 y) with HCC.
mpMRI including blood-oxygen-level-dependent (BOLD) MRI, intravoxel incoherent motion diffusion-weighted imaging (IVIM-DWI), and dynamic contrast-enhanced-(DCE-) MRI was performed simultaneously with 18F-FDG-PET on a 3T PET/MRI hybrid system.
Quantitative BOLD, IVIM and DCE-MRI parameters (Tofts model (TM) and shutter-speed model (SSM)), and PET parameters (SUVmean and SUVmax) were quantified and compared between HCC lesions and liver parenchyma using Wilcoxon signed-rank tests.
SUV ratios between HCCs and liver were also calculated (SUVmean T/L and SUVmax T/L).
Diagnostic performance of (combined) mp-PET/MRI parameters for characterization of HCC was assessed using ROC analysis.
Spearman correlations between PET and mpMRI parameters in HCC tumors and liver parenchyma were evaluated.
Results.
21 HCC lesions (mean size 4.0 ± 2.4 cm; range 2–13 cm) were analyzed.
HCCs exhibited significantly higher arterial fraction (from DCE-MRI) and lower R2∗ pre-O2 and post-O2 (from BOLD-MRI) versus liver parenchyma (P<0.032).
The highest diagnostic performance for differentiation between HCC and liver parenchyma was achieved for combined ART SSM and R2∗ post-O2 (AUC = 0.91).
SUVmax showed reasonable performance for differentiation of HCC versus liver (AUC = 0.75).
In HCC, DCE-MRI parameters Ktrans (TM and SSM) and ve TM exhibited significant negative correlations with SUVmax T/L (r ranges from −0.624 to −0.566; FDR-adjusted P<0.050).
Conclusions.
Despite the observed reasonable diagnostic performance of FDG-PET SUVmax for HCC detection and several significant correlations between FDG-PET SUV and DCE-MRI parameters, FDG-PET did not provide clear additional value for HCC characterization compared to mpMRI in this pilot study.
American Psychological Association (APA)
Hectors, Stefanie J.& Wagner, Mathilde& Besa, Cecilia& Huang, Wei& Taouli, Bachir. 2018. Multiparametric FDG-PETMRI of Hepatocellular Carcinoma: Initial Experience. Contrast Media & Molecular Imaging،Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1131456
Modern Language Association (MLA)
Hectors, Stefanie J.…[et al.]. Multiparametric FDG-PETMRI of Hepatocellular Carcinoma: Initial Experience. Contrast Media & Molecular Imaging No. 2018 (2018), pp.1-10.
https://search.emarefa.net/detail/BIM-1131456
American Medical Association (AMA)
Hectors, Stefanie J.& Wagner, Mathilde& Besa, Cecilia& Huang, Wei& Taouli, Bachir. Multiparametric FDG-PETMRI of Hepatocellular Carcinoma: Initial Experience. Contrast Media & Molecular Imaging. 2018. Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1131456
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1131456