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On patient related factors and their impact on ultrasound-based shear wave elastography of the liver
Umeå University, Faculty of Medicine, Department of Nursing.ORCID iD: 0000-0001-9338-1639
Umeå University, Faculty of Medicine, Department of Nursing.ORCID iD: 0000-0002-1248-5581
2018 (English)In: Ultrasound in Medicine and Biology, ISSN 0301-5629, E-ISSN 1879-291X, Vol. 44, no 8, p. 1606-1615Article in journal (Refereed) Published
Abstract [en]

The aim of the study was to investigate patient-related factors associated with either reliable or poorly reliable measurement results of ultrasound-based shear wave elastography (SWE) of the liver. A total of 188 patients were analyzed prospectively with binary logistic regression using the interquartile range/median as cutoff to define two groups based on reliable and poorly reliable SWE results. SWE results correlated significantly with liver biopsy. Factors associated with reliable SWE results (i.e., no negative impact on measurements) were age, sex, cirrhosis, antiviral and/or cardiovascular medication, smoking habits and body mass index. Factors associated with poorly reliable SWE results were increased skin-to-liver capsule distance (odds ratio = 3.08, 95% confidence interval: 1.70-5.60) and steatosis (odds ratio =2.89, 95% confidence interval: 1.33-6.28). These findings indicate that the interquartile range/median as a quality parameter is useful in avoiding poorly reliable SWE results. How best to examine patients with increased skin-to-liver capsule distance is a matter of some controversy, as the incidences of obesity, diabetes and metabolic syndrome are increasing worldwide; however, our results indicate that reliable SWE results can be obtained in this group of patients by using ultrasound-based SWE. (Email: marie.byenfeldt@umu.se, Marie.byenfeldt@aleris.se ) 

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 44, no 8, p. 1606-1615
Keywords [en]
Shear wave elastography, Liver fibrosis, Skin-to-liver capsule distance, Interquartile range, Quality parameter, Reliability, Steatosis, Liver biopsy
National Category
Radiology, Nuclear Medicine and Medical Imaging Nursing
Identifiers
URN: urn:nbn:se:umu:diva-150663DOI: 10.1016/j.ultrasmedbio.2018.03.031ISI: 000436561500004PubMedID: 29735314Scopus ID: 2-s2.0-85046697393OAI: oai:DiVA.org:umu-150663DiVA, id: diva2:1242518
Available from: 2018-08-28 Created: 2018-08-28 Last updated: 2019-06-27Bibliographically approved

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Byenfeldt, MarieFransson, Per

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