| Diameter of the normal fetal thymus on ultrasound. | |
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MedLine Citation:
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PMID: 17385216 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To present the normative data of the transverse diameter of the developing fetal thymus. METHODS: In this prospective study, the maximum transverse diameter of the thymus was measured by one sonologist in 376 normal fetuses between 19 and 38 weeks of gestation. We assessed the relationship of the transverse thymic diameter with gestational age (GA), biparietal diameter, femur length and abdominal circumference using general linear regression modeling. The predicted mean and 95% reference range of thymic diameter at each GA were calculated from the regression equation. RESULTS: Measurements of the transverse diameter were possible in 352 of the 376 (94%) fetuses. The transverse diameter of the fetal thymus increased with increasing GA and fetal size parameters in a linear manner. The regression equation for transverse diameter of the thymus as a function of GA was: thymic diameter (cm) = 0.15 x GA (weeks) - 1.59 (r(2) = 0.86, P < 0.001). CONCLUSION: The transverse diameter of the fetal thymus is easy to measure; this study presents normative data. |
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Authors:
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J Y Cho; J Y Min; Y-H Lee; B McCrindle; L K Hornberger; S-J Yoo |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology Volume: 29 ISSN: 0960-7692 ISO Abbreviation: Ultrasound Obstet Gynecol Publication Date: 2007 Jun |
Date Detail:
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Created Date: 2007-05-30 Completed Date: 2008-02-19 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9108340 Medline TA: Ultrasound Obstet Gynecol Country: England |
Other Details:
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Languages: eng Pagination: 634-8 Citation Subset: IM |
Affiliation:
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Department of Radiology and Institute of Radiation Medicine, Seoul National University College of Medicine, Seoul, Korea. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Abdomen
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embryology,
ultrasonography Female Femur / embryology, ultrasonography Gestational Age Head / embryology, ultrasonography Humans Pregnancy Pregnancy Trimester, Second Pregnancy Trimester, Third Prospective Studies Reference Values Thymus Gland / embryology*, ultrasonography Ultrasonography, Prenatal |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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