{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,17]],"date-time":"2025-09-17T15:11:00Z","timestamp":1758121860273},"reference-count":15,"publisher":"Cambridge University Press (CUP)","issue":"3","license":[{"start":{"date-parts":[[2014,8,1]],"date-time":"2014-08-01T00:00:00Z","timestamp":1406851200000},"content-version":"unspecified","delay-in-days":6240,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Acta genet. med. gemellol.: twin res."],"published-print":{"date-parts":[[1997,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:italic>Objective<\/jats:italic>. The aim was to determine the chorionic and amniotic types in multifetal pregnancies with transvaginal ultrasonography at very early stage of gestation.<\/jats:p><jats:p><jats:italic>Study design<\/jats:italic>. Twenty-one spontaneous multifetal pregnancies were scanned transvaginally before 8 weeks' gestation (four of them from 4th week). The chorionic and amniotic type was determined ultrasonographically. All twin gestations had postpartum pathologic evaluation of the placenta and histologic determination of the chorionic and amniotic type.<\/jats:p><jats:p><jats:italic>Results<\/jats:italic>. Ultrasonographic evaluation of the 21 pregnancies demonstrated 20 twin and 1 triplet gestation. Four of the twin pregnancies were monochorionic-diamniotic. Triplet was monochorionic-triamniotic (spontaneously aborted in 8th week of gestation). In all 20 twin pregnancies, transvaginal ultrasonography correctly predicted the chorionic and amniotic type before 8 weeks of gestation.<\/jats:p><jats:p><jats:italic>Conclusion<\/jats:italic>. Transvaginal ultrasonography allows a reliable, simple and rapid determination; the dichorionic twin pregnancy in 4 weeks, monochorionic in 5 weeks, and differentiation of mono-or diamniotic in 7 weeks of gestation.<\/jats:p>","DOI":"10.1017\/s0001566000000581","type":"journal-article","created":{"date-parts":[[2016,7,27]],"date-time":"2016-07-27T06:04:21Z","timestamp":1469599461000},"page":"167-173","source":"Crossref","is-referenced-by-count":5,"title":["Very Early and Simple Determination of Chorionic and Amniotic Type in Twin Gestations by High-Frequency Transvaginal Ultrasonography"],"prefix":"10.1017","volume":"46","author":[{"given":"W.","family":"Malinowski","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2014,8,1]]},"reference":[{"key":"S0001566000000581_ref007","first-page":"200","article-title":"Very early pregnancy detection with endovaginal ultrasound","volume":"72","author":"Goldstein","year":"1988","journal-title":"Obstet Gynecol"},{"key":"S0001566000000581_ref010","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.155.1.3883418"},{"key":"S0001566000000581_ref002","doi-asserted-by":"publisher","DOI":"10.1097\/00003081-199003000-00006"},{"key":"S0001566000000581_ref004","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9378(89)80025-0"},{"key":"S0001566000000581_ref015","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9378(89)90921-6"},{"key":"S0001566000000581_ref011","first-page":"41","article-title":"Evaluation of dividing septum in multiple pregnancies with ultrasound for diagnosis of monochorionic pregnancy","volume":"2","author":"Malinowski","year":"1992","journal-title":"Ultrason Pol"},{"key":"S0001566000000581_ref009","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.185.3.1438758"},{"key":"S0001566000000581_ref008","first-page":"151","article-title":"Significance of membrane thickness in the sonographic evaluation of twin gestations","volume":"148","author":"Hertzberg","year":"1987","journal-title":"Radiology"},{"key":"S0001566000000581_ref003","first-page":"30","article-title":"Ultrasound in the antenatal management of twin gestation","volume":"10","author":"D'Alton","year":"1986","journal-title":"Semin Perinatol"},{"key":"S0001566000000581_ref014","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9378(89)90394-3"},{"key":"S0001566000000581_ref001","doi-asserted-by":"publisher","DOI":"10.1007\/978-1-4613-9514-0"},{"key":"S0001566000000581_ref006","first-page":"54","article-title":"Early pregnancy scanning with the endovaginal probe","volume":"31","author":"Goldstein","year":"1988","journal-title":"Contemp Ob Gyn"},{"key":"S0001566000000581_ref012","first-page":"71","article-title":"\u201cLambda\u201d sign in the ultrasonographic prediction of chorionicity in twin gestation","volume":"4","author":"Malinowski","year":"1994","journal-title":"Ultrason Pol"},{"key":"S0001566000000581_ref013","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9378(94)70291-8"},{"key":"S0001566000000581_ref005","doi-asserted-by":"publisher","DOI":"10.7863\/jum.1992.11.11.571"}],"container-title":["Acta geneticae medicae et gemellologiae: twin research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0001566000000581","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,5,11]],"date-time":"2019-05-11T16:41:50Z","timestamp":1557592910000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0001566000000581\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1997,7]]},"references-count":15,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1997,7]]}},"alternative-id":["S0001566000000581"],"URL":"https:\/\/doi.org\/10.1017\/s0001566000000581","relation":{},"ISSN":["0001-5660","2059-6324"],"issn-type":[{"value":"0001-5660","type":"print"},{"value":"2059-6324","type":"electronic"}],"subject":[],"published":{"date-parts":[[1997,7]]}}}