dc.contributor.author |
Dias, T. |
en_US |
dc.contributor.author |
Arcangeli, T. |
en_US |
dc.contributor.author |
Bhide, A. |
en_US |
dc.contributor.author |
Napolitano, R. |
en_US |
dc.contributor.author |
Mahsud-Dornan, S. |
en_US |
dc.contributor.author |
Thilaganathan, B. |
en_US |
dc.date.accessioned |
2014-10-29T09:33:11Z |
|
dc.date.available |
2014-10-29T09:33:11Z |
|
dc.date.issued |
2011 |
en_US |
dc.identifier.citation |
Ultrasound in Obstetrics and Gynecology. 2011; 38(5): pp.530-32 |
en_US |
dc.identifier.issn |
0960-7692 (Print) |
en_US |
dc.identifier.issn |
1469-0705 (Electronic) |
en_US |
dc.identifier.uri |
http://repository.kln.ac.lk/handle/123456789/2107 |
|
dc.description |
Indexed in MEDLINE |
|
dc.description.abstract |
OBJECTIVE: To determine the accuracy of ultrasound at 11-14 weeks' gestation in the diagnosis of chorionicity in twin pregnancy. METHODS:This was a retrospective observational study of data obtained between 1999 and 2010. At the first-trimester routine ultrasound scan,chorionicity was assigned according to the number of placental masses and T or λ-signs for a single placental mass. Chorionicity was confirmed by histology or discordant sex at birth. RESULTS: A total of 648 pregnancies were assigned chorionicity by first-trimester ultrasound during the study period. Chorionicity was ascertained in 613 cases, either by histology (n = 340) or discordant sex (n = 273). Chorionicity was correctly assigned by ultrasound at 11-14 weeks in 612 of 613 pregnancies (accuracy 99.8%). Sensitivity and specificity for determining monochorionicity were 100% and 99.8%, respectively.CONCLUSIONS:First-trimester ultrasound can be used to determine chorionicity reliably by noting the number of placental masses and T or λ-signs.Determination of twin chorionicity is important and should be completed in the first trimester. |
en_US |
dc.publisher |
Wiley |
en_US |
dc.subject |
Pregnancy, Twin |
en_US |
dc.title |
First-trimester ultrasound determination of chorionicity in twin pregnancy |
en_US |
dc.type |
Article |
en_US |
dc.identifier.department |
Obstetrics and Gynaecology |
en_US |
dc.creator.corporateauthor |
International Society of Ultrasound in Obstetrics and Gynecology |
en_US |