Nomogram of Intracranial Translucency in the First Trimester Ultrasound of Pregnant Women at Thammasat University Hospital
Nanthakomon, T.; Pongrojpaw, D.; Chanthasenannont, A.; Somprasit, C.; Tanprasertkul, C.; Suwannarurk, K.
Journal of the Medical Association of Thailand 99 Suppl. 4: S32-S36
2016
ISSN/ISBN: 0125-2208 PMID: 29916673 Document Number: 17431
The aim of the study was to determine normative values of intracranial translucency (IT) by ultrasonography in singleton pregnant women patient at Thammasat University Hospital during the first trimester. The first trimester singleton pregnant women (11-13 weeks) underwent routine ultrasonography One hundred and ninety one singleton pregnant women were examined by an ultrasonography to measure CRL, GA and IT. The average age was 29.71±5.09 years (16-39 years). All participants were healthy without a history of anomaly in previous pregnancies. Half of cases were nulliparity. Participants were followed until birth. There was no open neural tube defect baby in this study. Median GA, CRL and IT in this study were 12.6+0.7 weeks, 64.0±10.2 (40.0-80.9) and 1.3±0.3 (0.5-2.5) mm, respectively. IT measurement value increased in correlation with increasing CRL and advancing GA (p<0.05). IT values increased significantly with CRL and GA increasing.