Document Detail

Fetal lateral ventricles: reassessment of normal values for atrial diameter at US.
MedLine Citation:
PMID:  7972754     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To assess the normal range of cerebral ventricular atrial diameters during the second and third trimesters of pregnancy. MATERIALS AND METHODS: The transverse diameter of the atrium of the lateral ventricle was prospectively measured in 739 consecutive antenatal ultrasound examinations by positioning electronic calipers on the luminal margins of the ventricular wall, perpendicular to the long axis of the ventricle. RESULTS: The mean ventricular atrial diameter for the combined group of all 739 studies was 5.4 mm +/- 1.2 (standard deviation). The transverse diameter of the ventricular atrium did not progressively increase with advancing gestational age. All fetuses younger than 17 menstrual weeks had ventricular atrial diameters less than 8 mm. Four fetuses had ventricular diameters of 10 mm or greater. CONCLUSION: A reasonable upper limit of normal for transverse atrial diameter for gestational age of 25 weeks and above appears to be 10 mm. Prior to 25 weeks, diameters over 8 mm are unusual in the healthy fetus and signal the need for a detailed evaluation of fetal anatomy.
T A Farrell; B S Hertzberg; M A Kliewer; L Harris; S S Paine
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Radiology     Volume:  193     ISSN:  0033-8419     ISO Abbreviation:  Radiology     Publication Date:  1994 Nov 
Date Detail:
Created Date:  1994-11-28     Completed Date:  1994-11-28     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0401260     Medline TA:  Radiology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  409-11     Citation Subset:  AIM; IM    
Department of Radiology, Duke University Medical Center, Durham, NC 27710.
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MeSH Terms
Cerebral Ventricles / embryology,  ultrasonography*
Gestational Age
Prospective Studies
Reference Values
Ultrasonography, Prenatal*
Comment In:
Radiology. 1994 Nov;193(2):315-7   [PMID:  7972733 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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