{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,9]],"date-time":"2026-01-09T23:53:04Z","timestamp":1768002784762,"version":"3.49.0"},"reference-count":39,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2021,1,26]],"date-time":"2021-01-26T00:00:00Z","timestamp":1611619200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Clinical Ultrasound"],"published-print":{"date-parts":[[2021,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To establish consistent normal reference values for fetal anterior cerebral artery (ACA) and posterior cerebral artery (PCA) pulsatility index (PI) in prolonged pregnancy.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This prospective cross\u2010sectional observational study included singleton normal prolonged pregnancies into two study groups according to the gestational age: from 40\u2009+\u20090 to 40\u2009+\u20096 and from 41\u2009+\u20090 to 41\u2009+\u20096\u2009weeks. The PI was assessed in both anatomical segments of ACA (ACA\u2010S1 and ACA\u2010S2) and of PCA (PCA\u2010S1 and PCA\u2010S2) with color Doppler imaging and pulsed Doppler examination, and reference centiles charts were generated. PI values from the two investigated segments of each vessel were also compared.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Data were obtained in 771 patients: n = 448 in the 40\u2009+\u20090 and 40\u2009+\u20096\u2009weeks group, and n = 323 in the 41\u2009+\u20090 and 41\u2009+\u20096\u2009weeks group. A moderate decrease in PI was observed as pregnancy progressed. No differences in PI values were found between the two anatomical segments of ACA and PCA.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>This study provides Doppler reference values for the fetal ACA and PCA PI. It also shows that Doppler examination could be performed indifferently in one of the two anatomical segments of these arteries.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jcu.22979","type":"journal-article","created":{"date-parts":[[2021,1,27]],"date-time":"2021-01-27T05:09:59Z","timestamp":1611724199000},"page":"199-204","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Reference values for pulsatility index of fetal anterior and posterior cerebral arteries in prolonged pregnancy"],"prefix":"10.1002","volume":"49","author":[{"given":"Paolo","family":"Rosati","sequence":"first","affiliation":[{"name":"Department of \u201cScienze della Salute della Donna, del Bambino e di Sanit\u00e0 Pubblica\u201d della Fondazione Policlinico Universitario A Gemelli IRCCS  Rome Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Silvia","family":"Buongiorno","sequence":"additional","affiliation":[{"name":"Department of \u201cScienze della Salute della Donna, del Bambino e di Sanit\u00e0 Pubblica\u201d della Fondazione Policlinico Universitario A Gemelli IRCCS  Rome Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Silvia","family":"Salvi","sequence":"additional","affiliation":[{"name":"Department of \u201cScienze della Salute della Donna, del Bambino e di Sanit\u00e0 Pubblica\u201d della Fondazione Policlinico Universitario A Gemelli IRCCS  Rome Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Antonio","family":"Lanzone","sequence":"additional","affiliation":[{"name":"Department of \u201cScienze della Salute della Donna, del Bambino e di Sanit\u00e0 Pubblica\u201d della Fondazione Policlinico Universitario A Gemelli IRCCS  Rome Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6353-9383","authenticated-orcid":false,"given":"Alessandra","family":"Familiari","sequence":"additional","affiliation":[{"name":"Department of \u201cScienze della Salute della Donna, del Bambino e di Sanit\u00e0 Pubblica\u201d della Fondazione Policlinico Universitario A Gemelli IRCCS  Rome Italy"},{"name":"Department of Obstetrics and Gynecology \u201cL. 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