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This study used multi-dynamic-multi-echo (MDME)-based relaxometry for the quantitative determination of pituitary tumor consistency, with the aim of predicting lesion resectability.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Seventy-two patients with suspected pituitary adenomas, who underwent preoperative 3\u202fT MRI between January 2020 and January 2022, were included in this prospective study. Lesion-specific T1-\/T2-relaxation times (T1R\/T2R) and proton density (PD) metrics were determined. During surgery, data about tumor resectability were collected. A\u00a0Receiver Operating Characteristic (ROC) curve analysis was performed to investigate the diagnostic performance (sensitivity\/specificity) for discriminating between easy- and hard-to-remove by aspiration (eRAsp and hRAsp) lesions. A\u00a0Mann-Whitney-U-test was done for group comparison.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      A\u00a0total of 65\u00a0participants (mean age, 54\u00a0years\u202f\u00b1\u200915, 33\u00a0women) were enrolled in the quantitative analysis. Twenty-four lesions were classified as hRAsp, while 41\u00a0lesions were assessed as eRAsp. There were significant differences in T1R (hRAsp: 1221.0\u202fms\u202f\u00b1\u2009211.9; eRAsp: 1500.2\u202fms \u00b1\u202f496.4;\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u20090.003) and T2R (hRAsp: 88.8\u202fms\u202f\u00b1\u200914.5; eRAsp: 137.2\u202fms\u202f\u00b1\u2009166.6;\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u20090.03) between both groups. The ROC analysis revealed an area under the curve of 0.72 (95% CI: 0.60\u20130.85) at\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u20090.003 for T1R (cutoff value: 1248\u202fms; sensitivity\/specificity: 78%\/58%) and 0.66 (95% CI: 0.53\u20130.79) at\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u20090.03 for T2R (cutoff value: 110\u202fms; sensitivity\/specificity: 39%\/96%).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>MDME-based relaxometry enables a\u00a0non-invasive, pre-surgical characterization of lesion consistency and, therefore, provides a\u00a0modality with which to predict tumor resectability.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00062-024-01407-1","type":"journal-article","created":{"date-parts":[[2024,4,19]],"date-time":"2024-04-19T05:02:01Z","timestamp":1713502921000},"page":"663-673","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Multi-Dynamic-Multi-Echo-based MRI for the Pre-Surgical Determination of Sellar Tumor Consistency: a\u00a0Quantitative Approach for Predicting Lesion Resectability"],"prefix":"10.1007","volume":"34","author":[{"given":"Mehmet Salih","family":"Yildirim","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Victor Ulrich","family":"Schmidbauer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexander","family":"Micko","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lisa","family":"Lechner","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Weber","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Julia","family":"Furtner","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefan","family":"Wolfsberger","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Intesar-Victoria","family":"Malla Houech","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna","family":"Cho","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gregor","family":"Dovjak","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gregor","family":"Kasprian","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniela","family":"Prayer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1193-0970","authenticated-orcid":false,"given":"Wolfgang","family":"Marik","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,4,19]]},"reference":[{"issue":"10","key":"1407_CR1","doi-asserted-by":"publisher","first-page":"937","DOI":"10.1056\/NEJMra1810772","volume":"382","author":"S Melmed","year":"2020","unstructured":"Melmed\u00a0S. 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