title: Ultrasound fetal biometry charts for a North American Caucasian population.
abstract: OBJECTIVE
  This study was done to produce enhanced fetal biometry charts and graphs presenting percentile values as a function of fetal age.
  
  
  METHODS
  The relationships between the ultrasound measurements of 10 fetal parameters and menstrual age were determined by a cross-sectional study. Data were obtained from 508 to 790 fetuses. Anatomic structures were scanned and measured 3 times during 1 routine sonographic examination. The study group consisted of 1,396 Caucasian women who had normal singleton fetuses with confirmation of menstrual dates by sonography before 14 weeks and for whom complete pregnancy outcome information was available. For each of the 10 parameters, percentile curves were derived for the 5th, 10th, 25th, 50th, 75th, 90th, and 95th percentiles.
  
  
  RESULTS
  Ready-to-use fetal measurement charts and graphs are presented in a format giving the percentile values as a function of fetal age. There were no significant differences between male and female fetuses.
  
  
  CONCLUSIONS
  These fetal biometry charts and graphs, obtained from a North American Caucasian population, enhance previously published data.
authors.affiliation: Children's and Women's Health Centre of British Colucambia, Vancouver, Canada.
authors.forename: V A
authors.initials: VA
authors.lastname: Lessoway
authors.forename: M
authors.initials: M
authors.lastname: Schulzer
authors.forename: B K
authors.initials: BK
authors.lastname: Wittmann
authors.forename: F A
authors.initials: FA
authors.lastname: Gagnon
authors.forename: R D
authors.initials: RD
authors.lastname: Wilson
mesh_terms: D000005:Abdomen / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D000328:Adult; D000886:Anthropometry / Q000379:methods*; D005314:Embryonic and Fetal Development; D005260:Female; D005269:Femur / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D005333:Fetus / Q000033:anatomy & histology*; D005865:Gestational Age; D006257:Head / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008598:Menstruation; D009656:North America; D011247:Pregnancy; D012189:Retrospective Studies; D013909:Thorax / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D016216:Ultrasonography, Prenatal; D044465:White People