TY - JOUR TI - Diagnostic accuracy of elastography and magnetic resonance imaging in patients with NAFLD: A systematic review and meta-analysis AU - Selvaraj, E.A. AU - Mózes, F.E. AU - Jayaswal, A.N.A. AU - Zafarmand, M.H. AU - Vali, Y. AU - Lee, J.A. AU - Levick, C.K. AU - Young, L.A.J. AU - Palaniyappan, N. AU - Liu, C.-H. AU - Aithal, G.P. AU - Romero-Gómez, M. AU - Brosnan, M.J. AU - Tuthill, T.A. AU - Anstee, Q.M. AU - Neubauer, S. AU - Harrison, S.A. AU - Bossuyt, P.M. AU - Pavlides, M. AU - Daly, A. AU - Johnson, K. AU - Govaere, O. AU - Cockell, S. AU - Tiniakos, D. AU - Bedossa, P. AU - Oakley, F. AU - Cordell, H. AU - Day, C. AU - Wonders, K. AU - Bossuyt, P. AU - Zafarmand, H. AU - Lee, J. AU - Ratziu, V. AU - Clement, K. AU - Pais, R. AU - Schuppan, D. AU - Schattenberg, J. AU - Vidal-Puig, T. AU - Vacca, M. AU - Rodrigues-Cuenca, S. AU - Allison, M. AU - Kamzolas, I. AU - Petsalaki, E. AU - Oresic, M. AU - Hyötyläinen, T. AU - McGlinchey, A. AU - Mato, J.M. AU - Millet, O. AU - Dufour, J.-F. AU - Berzigotti, A. AU - Harrison, S. AU - Cobbold, J. AU - Mozes, F. AU - Akhtar, S. AU - Banerjee, R. AU - Kelly, M. AU - Shumbayawonda, E. AU - Dennis, A. AU - Erpicum, C. AU - Gómez-González, E. AU - Ampuero, J. AU - Castell, J. AU - Gallego-Durán, R. AU - Fernández, I. AU - Montero-Vallejo, R. AU - Karsdal, M. AU - Erhardtsen, E. AU - Rasmussen, D. AU - Leeming, D.J. AU - Fisker, M.J. AU - Sinisi, A. AU - Musa, K. AU - Betsou, F. AU - Sandt, E. AU - Tonini, M. AU - Bugianesi, E. AU - Rosso, C. AU - Armandi, A. AU - Marra, F. AU - Gastaldelli, A. AU - Svegliati, G. AU - Boursier, J. AU - Francque, S. AU - Vonghia, L. AU - Ekstedt, M. AU - Kechagias, S. AU - Yki-Jarvinen, H. AU - Luukkonen, P. AU - van Mil, S. AU - Papatheodoridis, G. AU - Cortez-Pinto, H. AU - Valenti, L. AU - Petta, S. AU - Miele, L. AU - Geier, A. AU - Trautwein, C. AU - Aithal, G. AU - Hockings, P. AU - Newsome, P. AU - Wenn, D. AU - Pereira Rodrigues, C.M. AU - Chaumat, P. AU - Hanf, R. AU - Trylesinski, A. AU - Ortiz, P. AU - Duffin, K. AU - Brosnan, J. AU - Tuthill, T. AU - McLeod, E. AU - Ertle, J. AU - Younes, R. AU - Ostroff, R. AU - Alexander, L. AU - Kjær, M.S. AU - Mikkelsen, L.F. AU - Balp, M.-M. AU - Brass, C. AU - Jennings, L. AU - Martic, M. AU - Loeffler, J. AU - Hanauer, G. AU - Shankar, S. AU - Fournier, C. AU - Pepin, K. AU - Ehman, R. AU - Myers, J. AU - Ho, G. AU - Torstenson, R. AU - Myers, R. AU - Doward, L. AU - LITMUS Investigators JO - WORLD JOURNAL OF HEPATOLOGY PY - 2021 VL - 75 TODO - 4 SP - 770-785 PB - Elsevier B.V. SN - null TODO - 10.1016/j.jhep.2021.04.044 TODO - adult; aged; area under the curve; Article; cohort analysis; diagnostic accuracy; diagnostic test accuracy study; false positive result; female; human; liver biopsy; liver cirrhosis; liver fibrosis; magnetic resonance elastography; male; meta analysis; non invasive procedure; nonalcoholic fatty liver; nonalcoholic steatohepatitis; nuclear magnetic resonance imaging; predictive value; prevalence; Quality Assessment of Diagnostic Accuracy Studies; radiodiagnosis; receiver operating characteristic; sensitivity and specificity; shear wave elastography; standard; systematic review; diagnostic imaging; elastography; nonalcoholic fatty liver; nuclear magnetic resonance imaging; procedures, Adult; Area Under Curve; Elasticity Imaging Techniques; Humans; Magnetic Resonance Imaging; Non-alcoholic Fatty Liver Disease; ROC Curve TODO - Background and Aims: Vibration-controlled transient elastography (VCTE), point shear wave elastography (pSWE), 2-dimensional shear wave elastography (2DSWE), magnetic resonance elastography (MRE), and magnetic resonance imaging (MRI) have been proposed as non-invasive tests for patients with non-alcoholic fatty liver disease (NAFLD). This study evaluated their diagnostic accuracy for liver fibrosis and non-alcoholic steatohepatitis (NASH). Methods: PubMED/MEDLINE, EMBASE and the Cochrane Library were searched for studies examining the diagnostic accuracy of these index tests, against histology as the reference standard, in adult patients with NAFLD. Two authors independently screened and assessed methodological quality of studies and extracted data. Summary estimates of sensitivity, specificity and area under the curve (sAUC) were calculated for fibrosis stages and NASH, using a random effects bivariate logit-normal model. Results: We included 82 studies (14,609 patients). Meta-analysis for diagnosing fibrosis stages was possible in 53 VCTE, 11 MRE, 12 pSWE and 4 2DSWE studies, and for diagnosing NASH in 4 MRE studies. sAUC for diagnosis of significant fibrosis were: 0.83 for VCTE, 0.91 for MRE, 0.86 for pSWE and 0.75 for 2DSWE. sAUC for diagnosis of advanced fibrosis were: 0.85 for VCTE, 0.92 for MRE, 0.89 for pSWE and 0.72 for 2DSWE. sAUC for diagnosis of cirrhosis were: 0.89 for VCTE, 0.90 for MRE, 0.90 for pSWE and 0.88 for 2DSWE. MRE had sAUC of 0.83 for diagnosis of NASH. Three (4%) studies reported intention-to-diagnose analyses and 15 (18%) studies reported diagnostic accuracy against pre-specified cut-offs. Conclusions: When elastography index tests are acquired successfully, they have acceptable diagnostic accuracy for advanced fibrosis and cirrhosis. The potential clinical impact of these index tests cannot be assessed fully as intention-to-diagnose analyses and validation of pre-specified thresholds are lacking. Lay summary: Non-invasive tests that measure liver stiffness or use magnetic resonance imaging (MRI) have been suggested as alternatives to liver biopsy for assessing the severity of liver scarring (fibrosis) and fatty inflammation (steatohepatitis) in patients with non-alcoholic fatty liver disease (NAFLD). In this study, we summarise the results of previously published studies on how accurately these non-invasive tests can diagnose liver fibrosis and inflammation, using liver biopsy as the reference. We found that some techniques that measure liver stiffness had a good performance for the diagnosis of severe liver scarring. © 2021 The Author(s) ER -