EDAN U60 - EFW Calculation

U60 Diagnostic Ultrasound System User Manual Obstetric Measurements and Calculations
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4. Select OK and press Set to do the calculation automatically, or Cancel to give up the
calculation.
NOTE:
1. For EDC calculation, make sure that the system date is correct. The standard
pregnancy period in the system can be set to 40 or 41 weeks. For the BBT
method calculation, if the interval between the input date and the current system
date exceeds 286 days, the system will not accept it.
2. The date format of EDC here accords with what you have set in the General
Preset window.
8.1.18. EFW Calculation
This system can calculate EFW according to the measured data corresponding to different
formulas.
Select a Formula in Preset
This system provides eleven types of EFW formula, as shown below.
Options
Formula
Tokyo
EFW = 1.07* (BPD
3
)+3.42*APTD*TTD*FL
EFW: g; Others: cm
Osaka
EFW = 1.25674* (BPD
3
)+3.50665*FTA*FL+6.3
EFW: g; FTA: cm
2
; Others: cm
HADLOCK1
EFW = 10^{1.304+ (0.05281*AC)+ (0.1938*FL)- (0.004*FL*AC)}
EFW: g;
Others: cm
HADLOCK2
EFW = 10^{1.335- (0.0034*AC*FL)+ (0.0316*BPD)+ (0.0457*AC) +
(0.1623*FL) }
EFW: g;
Others: cm
HADLOCK3
EFW = 10^{1.326- (0.00326*AC*FL)+ (0.0107*HC)+ (0.0438*AC) +
(0.158*FL) }
EFW: g;
Others: cm
HADLOCK4
EFW = 10^{1.3596- (0.00386*AC*FL)+ (0.0064*HC)+
(0.00061*BPD*AC) + (0.0424*AC)+ (0.174*FL) }
Shepard
EFW = 10^{-1.7492+ (0.166*BPD)+ (0.046*AC) - (2.646*AC*BPD/1000)}
EFW: kg; Others: cm
Merz1
EFW = (-3200.40479+ (157.07186*AC)+{15.90391* (BPD
2
)}
EFW: g;
Others: cm
Merz2
EFW = 0.1* (AC
3
)}
EFW: g;
Others: cm
Hansmann
EFW = (-1.05775*BPD+0.0930707* (BPD
2
) + {0.649145*THD) -
0.020562* (THD
2
) +0.515263
EFW: kg;
Others: cm
Campbell
EFW = EXP{-4.564+ (0.282*AC)-[0.00331* (AC
2
)]}
Table 8-3 Obstetric Calculation Formula