Williams Manual of Pregnancy Complications, 23 ed.

APPENDIX B. Ultrasound Reference Tables

TABLE B-1. Combined Data Comparing Menstrual Age with Mean Gestational Sac Diameter, Crown-Rump Length, and hCG Levelsa

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TABLE B-2. Reference Values for Abdominal Circumference (AC), Head Circumference (HC), Biparietal Diameter (BPD), and Femur Length (FL)

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TABLE B-3. Amnionic Fluid Index Values in Normal Pregnancy

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TABLE B-4. Fetal Weight Percentiles by Gestational Age

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TABLE B-5. Smoothed Birth Weight Percentiles for Twins with Monochorionic Placentation

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TABLE B-6. Smoothed Birth Weight Percentiles for Twins with Dichorionic Placentation

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TABLE B-7. Normal Fetal Body Ratios According to Gestational Age (14–40 Weeks)

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TABLE B-8. Length of Fetal Long Bones (mm) According to Gestational Age

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TABLE B-9. Fetal Thoracic Circumference Measurements According to Gestational Agea

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TABLE B-10. Ocular Parameters According to Gestational Age

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TABLE B-11. Transverse Cerebellar Diameter Measurements According to Gestational Age

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TABLE B-12. Reference Values for Umbilical Artery Doppler

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TABLE B-13. Reference Values for Middle Cerebral Artery Peak Systolic Velocity

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