title: Reference charts and equations of Korean fetal biometry.
abstract: OBJECTIVE
  To construct new reference charts and equations for fetal biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC) and femur diaphysis length (FDL) from Korean fetuses at 12-40 weeks.
  
  
  METHODS
  Prospective cross-sectional data obtained in one center for 5 years from a population of pregnant women undergoing ultrasound examination between the 12th and 40th week of gestation. Exclusion criteria comprised all maternal and fetal conditions possibly affecting fetal biometry. No fetuses were excluded on the basis of abnormal biometry. For each measurement, regression models were fitted to estimate both the mean and the standard deviation at each menstrual age.
  
  
  RESULTS
  Biometric measurements were obtained for 10 455 fetuses. New charts and reference equations are reported for BPD, HC, AC and FDL. Reference equations are cubic models.
  
  
  CONCLUSIONS
  We present new Korean reference charts and equations for fetal biometry. They can be easily used in obstetric ultrasound studies for the Korean population.
authors: Department of Radiology, Cheil General Hospital and Women's Healthcare Center, Sungkyunkwan University School of Medicine, Jung-Gu, Seoul, Korea. radsijung@radiol.snu.ac.kr
authors: Sung Il
authors: SI
authors: Jung
authors: Young Ho
authors: YH
authors: Lee
authors: Min Hoan
authors: MH
authors: Moon
authors: Mi Jin
authors: MJ
authors: Song
authors: Jee Yeon
authors: JY
authors: Min
authors: Jeong-Ah
authors: JA
authors: Kim
authors: Ju Hyun
authors: JH
authors: Park
authors: Jae Hyug
authors: JH
authors: Yang
authors: Moon Young
authors: MY
authors: Kim
authors: Jin Hoon
authors: JH
authors: Chung
authors: Jeong Yeon
authors: JY
authors: Cho
authors: Kwang Gi
authors: KG
authors: Kim
mesh_terms: D000005:Abdomen / Q000196:embryology; D001699:Biometry / Q000379:methods*; D005260:Female; D005269:Femur / Q000196:embryology; D005333:Fetus / Q000033:anatomy & histology*; D006257:Head / Q000196:embryology; D006801:Humans; D007231:Infant, Newborn; D007723:Korea; D010294:Parietal Bone / Q000196:embryology; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third; D012016:Reference Values; D016216:Ultrasonography, Prenatal