{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T04:06:42Z","timestamp":1787026002507,"version":"build-2736575974"},"reference-count":79,"publisher":"National Institute for Health and Care Research","license":[{"start":{"date-parts":[[2023,7,1]],"date-time":"2023-07-01T00:00:00Z","timestamp":1688169600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000664","name":"Health Technology Assessment programme","doi-asserted-by":"publisher","award":["NIHR135067"],"award-info":[{"award-number":["NIHR135067"]}],"id":[{"id":"10.13039\/501100000664","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journalslibrary.nihr.ac.uk"],"crossmark-restriction":false},"short-container-title":["Health Technol Assess"],"abstract":"<jats:sec id=\"abs1-1\">\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Magnetic resonance imaging-based technologies are non-invasive diagnostic tests that can be used to assess non-alcoholic fatty liver disease.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"abs1-2\">\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>The study objectives were to assess the diagnostic test accuracy, clinical impact and cost-effectiveness of two magnetic resonance imaging-based technologies (LiverMultiScan and magnetic resonance elastography) for patients with non-alcoholic fatty liver disease for whom advanced fibrosis or cirrhosis had not been diagnosed and who had indeterminate results from fibrosis testing, or for whom transient elastography or acoustic radiation force impulse was unsuitable, or who had discordant results from fibrosis testing.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"abs1-3\">\n                    <jats:title>Data sources<\/jats:title>\n                    <jats:p>The data sources searched were MEDLINE, MEDLINE Epub Ahead of Print, In-Process &amp; Other Non-Indexed Citations, Embase, Cochrane Database of Systematic Reviews, Cochrane Central Database of Controlled Trials, Database of Abstracts of Reviews of Effects and the Health Technology Assessment.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"abs1-4\">\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A systematic review was conducted using established methods. Diagnostic test accuracy estimates were calculated using bivariate models and a summary receiver operating characteristic curve was calculated using a hierarchical model. A simple decision-tree model was developed to generate cost-effectiveness results.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"abs1-5\">\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The diagnostic test accuracy review (13 studies) and the clinical impact review (11 studies) only included one study that provided evidence for patients who had indeterminate or discordant results from fibrosis testing. No studies of patients for whom transient elastography or acoustic radiation force impulse were unsuitable were identified.<\/jats:p>\n                    <jats:p>Depending on fibrosis level, relevant published LiverMultiScan diagnostic test accuracy results ranged from 50% to 88% (sensitivity) and from 42% to 75% (specificity). No magnetic resonance elastography diagnostic test accuracy data were available for the specific population of interest.<\/jats:p>\n                    <jats:p>Results from the clinical impact review suggested that acceptability of LiverMultiScan was generally positive.<\/jats:p>\n                    <jats:p>To explore how the decision to proceed to biopsy is influenced by magnetic resonance imaging-based technologies, the External Assessment Group presented cost-effectiveness analyses for LiverMultiScan plus biopsy versus biopsy only. Base-case incremental cost-effectiveness ratio per quality-adjusted life year gained results for seven of the eight diagnostic test strategies considered showed that LiverMultiScan plus biopsy was dominated by biopsy only; for the remaining strategy (Brunt grade \u22652), the incremental cost-effectiveness ratio per quality-adjusted life year gained was \u00a31,266,511. Results from threshold and scenario analyses demonstrated that External Assessment Group base-case results were robust to plausible variations in the magnitude of key parameters.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"abs1-6\">\n                    <jats:title>Limitations<\/jats:title>\n                    <jats:p>Diagnostic test accuracy, clinical impact and cost-effectiveness data for magnetic resonance imaging-based technologies for the population that is the focus of this assessment were limited.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"abs1-7\">\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Magnetic resonance imaging-based technologies may be useful to identify patients who may benefit from additional testing in the form of liver biopsy and those for whom this additional testing may not be necessary. However, there is a paucity of diagnostic test accuracy and clinical impact data for patients who have indeterminate results from fibrosis testing, for whom transient elastography or acoustic radiation force impulse are unsuitable or who had discordant results from fibrosis testing.<\/jats:p>\n                    <jats:p>Given the External Assessment Group cost-effectiveness analyses assumptions, the use of LiverMultiScan and magnetic resonance elastography for assessing non-alcoholic fatty liver disease for patients with inconclusive results from previous fibrosis testing is unlikely to be a cost-effective use of National Health Service resources compared with liver biopsy only.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"abs1-8\">\n                    <jats:title>Study registration<\/jats:title>\n                    <jats:p>This study is registered as PROSPERO CRD42021286891.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"abs1-9\">\n                    <jats:title>Funding<\/jats:title>\n                    <jats:p>\n                      Funding for this study was provided by the Evidence Synthesis Programme of the National Institute for Health and Care Research (NIHR) Health Technology Assessment programme and will be published in full in\n                      <jats:italic>Health Technology Assessment<\/jats:italic>\n                      ; Vol. 27, No. 10. See the NIHR Journals Library website for further project information.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.3310\/kgju3398","type":"journal-article","created":{"date-parts":[[2023,2,21]],"date-time":"2023-02-21T06:53:07Z","timestamp":1676962387000},"page":"1-115","update-policy":"https:\/\/doi.org\/10.3310\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":8,"title":["Diagnostic accuracy and clinical impact of MRI-based technologies for patients with non-alcoholic fatty liver disease: systematic review and economic evaluation"],"prefix":"10.3310","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5578-1535","authenticated-orcid":true,"given":"Rebecca","family":"Bresnahan","sequence":"first","affiliation":[{"name":"LRiG, Department of Health Data Science, University of Liverpool, Liverpool, 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