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- Crown-rump length (CRL)
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- Biparietal diameter (BPD) & Head circumference (HC)
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- Abdominal circumference (AC)
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- Femoral length (FL)
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- Nomogram of CRL vs Gestation weeks
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- Nomogram of HC vs Gestation weeks
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- Nomogram of BPD, AC and FL vs Gestation weeks
The reference for the CRL chart for Hong Kong Chinese:
Sahota DS, Leung TY, Leung TN, Chan OK, Lau TK. Fetal crown-rump length and estimation of gestational age in an ethnic Chinese population. Ultrasound Obs Gynecol 2009;33:157-60
The reference for the fetal biometry for Hong Kong Chinese:
Leung TN, Pang MW, Daljit SS, Leung TY, Poon CF, Wong SM, Lau TK. Fetal biometry in ethnic Chinese: biparietal diameter, head circumference, abdominal circumference and femur length. Ultrasound Obstet Gynecol. 2008;31:321-7
