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The effects of <jats:italic>B<\/jats:italic><jats:sub>1<\/jats:sub> non-uniformity on TSC measurements were corrected using the double-angle method. The long-component of <jats:sup>23<\/jats:sup>Na <jats:italic>T<\/jats:italic><jats:sub>2<\/jats:sub>* relaxation time was measured using a series of variable echo-times.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>The mean and standard deviation of TSC and long-component <jats:sup>23<\/jats:sup>Na <jats:italic>T<\/jats:italic><jats:sub>2<\/jats:sub>* values were calculated across the healthy volunteer group in the kidneys, cerebrospinal fluid (CSF), liver, gallbladder, spleen, aorta, and inferior vena cava.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Discussion<\/jats:title>\n                <jats:p>Mean TSC values in the kidneys, liver, and spleen were similar to those reported using <jats:sup>23<\/jats:sup>Na-MRI previously in the literature. Measurements in the CSF and gallbladder were lower, potentially due to the reduced spatial resolution achievable in a clinically acceptable scan time. Mean long-component <jats:sup>23<\/jats:sup>Na <jats:italic>T<\/jats:italic><jats:sub>2<\/jats:sub>* values were consistent with previous reports from the kidneys and CSF. Intra-population standard error was larger in smaller, fluid-filled structures due to fluid motion and partial volume effects.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s10334-024-01167-6","type":"journal-article","created":{"date-parts":[[2024,6,1]],"date-time":"2024-06-01T10:01:23Z","timestamp":1717236083000},"page":"737-748","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Quantitative 23Na magnetic resonance imaging in the abdomen at 3\u00a0T"],"prefix":"10.1007","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3920-4038","authenticated-orcid":false,"given":"Jonathan Richard","family":"Birchall","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ines","family":"Horvat-Menih","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joshua Daniel","family":"Kaggie","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Frank","family":"Riemer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Arnold Julian Vinoj","family":"Benjamin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin John","family":"Graves","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ian","family":"Wilkinson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ferdia Aidan","family":"Gallagher","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mary Anne","family":"McLean","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,6,1]]},"reference":[{"issue":"2","key":"1167_CR1","doi-asserted-by":"publisher","first-page":"641","DOI":"10.1016\/S0021-9258(17)30923-7","volume":"168","author":"RR Overman","year":"1947","unstructured":"Overman RR, Davis AK (1947) The application of flame photometry to sodium and potassium determinations in biological fluids. 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