GE LOGIQ A100 Technical Publication page 198

OB Report Page
U.S. Version Report Page (cont'd)
Calc
Mnemonic Calc. Name
HR Heart Rate
(Beats/minute)
GS Gestational Sac
CRL Crown Rump
Length
FL Femur Length
BPD Biparietal
Diameter
AC Abdominal
Circumference
HC Head
Circumference
182
Input
Measurements Formula
one 2 beat time HR[BPM]=120
(Measure [sec]/2beat
manually or time[sec]
automatically)
three distances GS=(d1+d2+d3)/
3+3.6225
one distance CRL=1.684969+
0.315646xd1+
0.049306xd1^2
+0.004057xd1^3
+0.000120456
xd1^4
one distance FL=10.38+0.225
6x d1+
0.001948xd1^2
one distance BPD=6.8954+
2.6345xd1+0.008
771xd1^3
Circumference AC=7.607+0.764
by trace, ellipse, 5 x C+0.00393 x
circle or two C^2
distances
Circumference HC=8.8+0.55xC
by trace, ellipse, + 0.00028xC^3
circle or two
distances
Table 13.. U.S. Version Formulas
Author
Reference
n/a
Hellman, A/OG,
103:789/1969
Hadlock, AJR,
138:875, 1982
Hadlock, JUM
1:97, 1982
Hadlock, AJR
139:367, 1982
Hadlock, AJR,
138:649, 1982
t
α 100 User Manual
LOGIQ
2211157–100 Rev 0