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Korean Journal of Obstetrics & Gynecology 2002;45(9):1497-1504.
Published online September 1, 2002.
Estimation of Mean Fetal Biometry by Using Ultrasonography in Normal Pregnancy.
June Seek Choi, Jae Hyug Yang, Hyun Mee Ryu, Moon Young Kim, Jung Yeol Han, Hyun Kyung Ahn, Sang Hee Jung, Kyu Hong Choi, Jee Young Lee, Soo Young Lee, Jeong Yeon Cho, Young Ho Lee
1Department of Obstetrics and Gynecology, Samsung Cheil Hospital and Women's Healthcare Center, SungKyunKwan University, School of Medicine, Seoul, Korea.
2Department of Radiology, Samsung Cheil Hospital and Women's Healthcare Center, SungKyunKwan University, School of Medicine, Seoul, Korea.
Abstract
OBJECTIVE
The purpose of this study was to assess the mean fetal biometry and to create a formulae for estimation of gestational week using sonographic biometry measurement. METHODS: A total 271 women of singleton gestation were involved in this study of ultrasonographic fetal biometry. During the period from June 1996 to March 1998, the length of CRL (Crown Rump Length), BPD (Biparietal Diameter), HC (Head Circumference), AC (Abdominal Circumference), HL (Humerus Length) and TL (Tibia Length) of fetuses in normal pregnancy were measured by ultrasonography at Samsung Cheil Hospital and Women's Healthcare Center. The gestational age prediction equations were derived from sigletons with the use of liner regression analysis. RESULTS: We present the percentile ranks of fetal CRL, BPD, HC, AC, HL and TL measurement from 11 to 39 week's gestation and mean value of fetal size at each week. These data were analyzed and several second grade equations were derived from the data. CONCLUSION: We created these authentic equations and tables for mean value of fetal biometry in normal pregnancy at each gestation week with minimal intervariable errors.
Key Words: Fetal biometry, Ultrasonography, BPD, HC, AC, FL, HL


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