{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,13]],"date-time":"2026-04-13T20:22:50Z","timestamp":1776111770616,"version":"3.50.1"},"reference-count":24,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2017,10,24]],"date-time":"2017-10-24T00:00:00Z","timestamp":1508803200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Ultrasound Medicine"],"published-print":{"date-parts":[[2018,5]]},"abstract":"<jats:sec><jats:title>Objectives<\/jats:title><jats:p>The aim of this study was to assess the correlation between the thymic\u2010thoracic ratio and cardiac axis in healthy fetuses.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The fetal thymic\u2010thoracic ratio and cardiac axis were measured in 220 healthy fetuses. The normal ranges of the fetal thymic\u2010thoracic ratio and cardiac axis for each gestational week were established. The Pearson correlation coefficient was calculated to analyze the relationship between the thymic\u2010thoracic ratio and cardiac axis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The mean fetal thymic\u2010thoracic ratio increased slightly throughout the pregnancy, from 0.33 at 17 weeks' gestation to 0.37 at 37 weeks. No statistically significant correlation was found between the thymic\u2010thoracic ratio and cardiac axis in healthy fetuses.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>In healthy fetuses, the thymus occupies an increasingly larger portion of the upper mediastinum when the pregnancy advances. The cardiac axis is not affected by the thymic\u2010thoracic ratio in healthy fetuses.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jum.14463","type":"journal-article","created":{"date-parts":[[2017,10,24]],"date-time":"2017-10-24T10:48:41Z","timestamp":1508842121000},"page":"1173-1178","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Correlation Between the Thymic\u2010Thoracic Ratio and Cardiac Axis in Healthy Fetuses"],"prefix":"10.1002","volume":"37","author":[{"given":"Ge","family":"Zhao","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology First Affiliated Hospital of China Medical University Shenyang China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jing","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology First Affiliated Hospital of China Medical University Shenyang 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