
Reference Manual 80
Age (wd)
Growth
(cm2)
±SD (cm2) Age (wd)
Growth
(cm2)
±SD (cm2)
22w5d 25.90 3.30 35w6d 72.70 8.40
22w6d 26.40 3.30 36w0d 73.20 8.40
23w0d 26.80 3.40 36w1d 73.70 8.50
23w1d 27.20 3.40 36w2d 74.20 8.60
23w2d 27.70 3.50 36w3d 74.70 8.60
23w3d 28.10 3.50 36w4d 75.20 8.70
23w4d 28.50 3.60 36w5d 75.70 8.80
23w5d 29.00 3.60 36w6d 76.20 8.80
23w6d 29.40 3.70 37w0d 76.80 8.90
24w0d 29.90 3.70 37w1d 77.30 9.00
24w1d 30.30 3.70 37w2d 77.70 9.10
24w2d 30.80 3.80 37w3d 78.20 9.10
24w3d 31.30 3.80 37w4d 78.70 9.20
24w4d 31.70 3.90 37w5d 79.20 9.30
24w5d 32.20 3.90 37w6d 79.70 9.30
24w6d 32.60 4.00 38w0d 80.20 9.40
25w0d 33.10 4.00 38w1d 80.70 9.50
25w1d 33.60 4.10 38w2d 81.10 9.60
25w2d 34.10 4.10 38w3d 81.60 9.60
25w3d 34.50 4.20 38w4d 82.10 9.70
25w4d 35.00 4.20 38w5d 82.60 9.80
Age (wd)
Growth
(cm2)
±SD (cm2) Age (wd)
Growth
(cm2)
±SD (cm2)
25w5d 35.50 4.30 38w6d 83.00 9.80
25w6d 36.00 4.30 39w0d 83.50 9.90
26w0d 36.50 4.40 39w1d 83.90 10.00
26w1d 36.90 4.40 39w2d 84.40 10.10
26w2d 37.40 4.50 39w3d 84.80 10.10
26w3d 37.90 4.50 39w4d 85.30 10.20
26w4d 38.40 4.60 39w5d 85.70 10.30
26w5d 38.90 4.60 39w6d 86.10 10.40
26w6d 39.40 4.70 40w0d 86.60 10.40
27w0d 39.90 4.70
Clavicle (CLAV) : YARKONI
GA Table
Yarkoni, S., et. al. “Clavicular Measurement: A New Biometric Parameter for Fetal Evaluation.”
Journal of Ultrasound in Medicine 4:467-470, September, 1985.
GA = 3.717731 + 8.272778 x CLAV
Output Unit : w (weeks)
Input Unit : cm
Min Range : 1.10 cm
Max Range : 4.50 cm
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