Reference charts and equations of Korean fetal biometry.
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.
Jung
Sung Il
SI
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
Lee
Young Ho
YH
Moon
Min Hoan
MH
Song
Mi Jin
MJ
Min
Jee Yeon
JY
Kim
Jeong-Ah
JA
Park
Ju Hyun
JH
Yang
Jae Hyug
JH
Kim
Moon Young
MY
Chung
Jin Hoon
JH
Cho
Jeong Yeon
JY
Kim
Kwang Gi
KG
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