| Ultrasound investigation of the fetal cerebral ventricles. | |
| | |
MedLine Citation:
|
PMID: 3891957 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Significant recent advances in ultrasonic technology have now made possible detailed evaluation of normal and abnormal fetal intracranial anatomy. Accurate knowledge of fetal intracranial anatomy is important for accurate and reproducible cephalometry as well as in antenatal diagnosis of dilated brain ventricles. High resolution real-time ultrasonic investigation was performed in 280 normal obstetric patients from the 14th to the 41st weeks of pregnancy. Eight patients with antenatally detected hydrocephalic fetuses were also included in the study. Measurements of the ratio between lateral ventricular width and cerebral hemispheric width (LVW/HW) showed value at 0.61 of the 14th week to 0.29 at about the 27th week. This value then remains unchanged until term. Accordingly the LVW/HW ratio decreases as the fetus grows reflecting the developmental changes. Due to this simple measurement technique, it is possible to diagnose hydrocephaly much earlier than by means of the identification of an abnormal BPD growth or a discrepancy between head and abdomen circumferences. Although the earliest reported cases of prenatal ultrasound detection of hydrocephaly have been at 17-18 weeks, one must be very careful when making the diagnosis prior to 20 weeks because the lateral ventricles are usually disproportionally large at this time and the LVW/HW ratio is, therefore, high. Moreover, the normal range is rather wide at this age. For this reason it is useful to repeat the ultrasound examination after one week; if the ratio increases, the diagnosis of hydrocephaly can be made without any doubt. |
| | |
Authors:
|
V D'Addario; A Kurjak |
Related Documents
:
|
22652047 - Arterio-arterial vascular anastomoses in monochorionic placentas with and without twin-... 11169357 - Sonographic markers of exencephaly at 9 + 3 weeks of gestation. 7117917 - Correlation between hormonal levels and ultrasound in patients with threatened abortion. 16866797 - Longitudinal ultrasound assessment of fetal presentation: a review of 1010 consecutive ... 9363217 - Microalbuminuria in early pregnancy in normal and high-risk patients. 16698717 - Ectopic uterine ovarian tissue in cynomolgus monkeys. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Journal of perinatal medicine Volume: 13 ISSN: 0300-5577 ISO Abbreviation: J Perinat Med Publication Date: 1985 |
Date Detail:
|
Created Date: 1985-08-12 Completed Date: 1985-08-12 Revised Date: 2004-11-17 |
Medline Journal Info:
|
Nlm Unique ID: 0361031 Medline TA: J Perinat Med Country: GERMANY, WEST |
Other Details:
|
Languages: eng Pagination: 67-77 Citation Subset: IM |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Cerebral Ventricles
/
embryology* Female Gestational Age Humans Hydrocephalus / diagnosis, embryology Pregnancy Ultrasonics* Ultrasonography |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Plasma oxytocin in human pregnancy and parturition.
Next Document: The role of prenatal diagnosis in the perinatal management of urinary tract abnormalities.