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The aim of the study was to investigate the impact of different body positions on acoustic radiation force impulse (ARFI) \u2013 SWE measurements, skin-to liver capsule distance (SCD) and ARFI-SWE reliability, also stratified for sex.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>In this prospective study, ten ARFI-SWE and ten SCD measurements were obtained from chronic liver disease patients in three body positions: supine, 30\u00b0 and 90\u00ba left decubitus. The study group was stratified into subgroups; increased sagittal abdominal diameter (SAD) (\u2265\u200923\u00a0cm) and advanced fibrosis (\u2265\u20099\u00a0kPa). Less reliable ARFI-SWE exams were defined as inter-quartile range \/median kPa\u2009&gt;\u200930%. Analysis included Friedman\u2019s test, Spearman\u2019s \u03c1 and binary logistic regression.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Analysis of 200 patients showed ARFI-SWE median results 5.5\u00a0kPa in supine, 5.8\u00a0kPa in 30\u00ba and 5.8\u00a0kPa in 90\u00ba left decubitus (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.023). Patients with increased SAD showed no difference in ARFI-SWE results across body positions (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200980;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.182), which was seen among patients with no increased SAD (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u2009120;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.020). Among advanced fibrosis cases (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200921), results decreased from 12.2\u00a0kPa (supine) to 9.6\u00a0kPa (90\u00b0 left decubitus,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.015). The amount of reliable ARFI-SWE exams increased from supine to left decubitus (84.7% -92.6%,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.014). The SCD value varied across the supine, 30\u00ba and 90\u00ba left decubitus body positions (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001; 1.9\u00a0cm, 1.8\u00a0cm, 1.9\u00a0cm, respectively). Only SAD associated with less reliable ARFI-SWE exams (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.011; odds ratio\u2009=\u20091.2), and SAD showed a positive correlation to ARFI-SWE result (Spearman\u2019s \u03c1\u2009=\u20090.515,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>SAD appears to influence ARFI-SWE examinations. Adjusting body positioning from supine to left decubitus in patients with higher SAD increases the number of reliable exams and decreases SCD, without increasing ARFI-SWE results, regardless of sex.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s12880-026-02330-2","type":"journal-article","created":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T12:55:01Z","timestamp":1775134501000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Impact of body position on liver stiffness measurements in men and women with chronic liver disease: liver fibrosis assessed with shear wave elastography comb-push technology"],"prefix":"10.1186","volume":"26","author":[{"given":"Marie","family":"Byenfeldt","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anders","family":"Elvin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Per","family":"Fransson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2026,4,2]]},"reference":[{"key":"2330_CR1","doi-asserted-by":"publisher","first-page":"1170","DOI":"10.1016\/j.jhep.2020.08.018","volume":"73","author":"EASL","year":"2020","unstructured":"EASL. 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