{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,12]],"date-time":"2025-11-12T03:06:28Z","timestamp":1762916788815},"reference-count":0,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2002,12,12]],"date-time":"2002-12-12T00:00:00Z","timestamp":1039651200000},"content-version":"vor","delay-in-days":498,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Ultrasound in Obstet &amp;amp; Gyne"],"published-print":{"date-parts":[[2001,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To obtain a nomogram of the clivus\u2013supraocciput angle as a basis for the diagnosis of Chiari II malformation in fetuses with ventriculomegaly.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A cross\u2010sectional study was undertaken on 310 normal pregnant women of 16\u201334 weeks' gestation. A mid\u2010sagittal section of the fetal skull was obtained and the angle between the clivus and the supraocciput was measured. Forty\u2010four fetuses with ventriculomegaly due to various causes (13 Chiari II malformation, 12 dysgenesis of the corpus callosum, 7 aqueductal stenosis, 6 borderline ventriculomegaly, 3 Dandy\u2013Walker malformation, 2 porencephaly, 1 schizencephaly) were also included in the study and the values of the angle found in the pathological cases were compared with those found in the normal population.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The clivus\u2013supraocciput angle did not change during gestation and was almost constant with an average value of 79.3 \u00b1 6\u00b0. All cases of Chiari II malformation showed a value below the 5th centile of our nomogram.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The evaluation of the posterior fossa and particularly the measurement of the clivus\u2013supraocciput angle is a useful parameter to differentiate the various causes of fetal ventriculomegaly and particularly to recognize Chiari II malformation. Copyright \u00a9 2001 International Society of Ultrasound in Obstetrics and Gynecology<\/jats:p><\/jats:sec>","DOI":"10.1046\/j.1469-0705.2001.00409.x","type":"journal-article","created":{"date-parts":[[2003,3,12]],"date-time":"2003-03-12T23:17:53Z","timestamp":1047511073000},"page":"146-149","update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":49,"title":["The clivus\u2013supraocciput angle: a useful measurement to evaluate the shape and size of the fetal posterior fossa and to diagnose Chiari II malformation"],"prefix":"10.1002","volume":"18","author":[{"given":"V.","family":"D'Addario","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"V.","family":"Pinto","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A.","family":"Del Bianco","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"E.","family":"Di Naro","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M.","family":"Tartagni","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"G.","family":"Miniello","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"G.","family":"Serio","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2002,12,12]]},"container-title":["Ultrasound in Obstetrics &amp; Gynecology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1046%2Fj.1469-0705.2001.00409.x","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1046%2Fj.1469-0705.2001.00409.x","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/pdf\/10.1046\/j.1469-0705.2001.00409.x","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,11,19]],"date-time":"2023-11-19T15:00:42Z","timestamp":1700406042000},"score":1,"resource":{"primary":{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/10.1046\/j.1469-0705.2001.00409.x"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2001,8]]},"references-count":0,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2001,8]]}},"alternative-id":["10.1046\/j.1469-0705.2001.00409.x"],"URL":"https:\/\/doi.org\/10.1046\/j.1469-0705.2001.00409.x","archive":["Portico"],"relation":{},"ISSN":["0960-7692","1469-0705"],"issn-type":[{"value":"0960-7692","type":"print"},{"value":"1469-0705","type":"electronic"}],"subject":[],"published":{"date-parts":[[2001,8]]},"assertion":[{"value":"2000-06-09","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2001-02-21","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2002-12-12","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}