Obstetrics 5-7
Types Tools Descriptions Methods or formulae
HrtA Heart area
Area in 2D General
Measurements
MV Diam Mitral Valve diameter
Distance in 2D General
Measurements
PV Diam Pulmonary valve Diameter
Ao Asc Diam Ascending Aorta Diameter
Ao Desc
Diam
Descending Aorta Diameter
Duct Art
Diam
Ductus Arteriosus Diameter
TV Diam Tricuspid valve Diameter
LPA Diam
Left pulmonary Artery
Diameter
RPA Diam
Right pulmonary Artery
Diameter
AV Diam Aorta Valve Diameter
IVC Diam Inferior vena cava Diameter
UT L Uterine Length
Distance, Trace and Spline in 2D
General Measurements
UT H Uterine Height
Distance in 2D General
Measurements
UT W Uterine Width
Endo Endometrium Thickness
Calculation
Mean Sac
Diam
Mean Gestational Sac
Diameter
The average value of three sac
diameters
AFI /
Measure the maximum AFs of
the four amniotic fluid pockets of
pregnant woman.
AFI = AF1+AF2+AF3+AF4
EFW Estimated Fetal Weight 1 EFW is calculated by the default
EFW formulae, based on multiple
measured parameters, See
“2.3.1 Obstetric Formula”. The
formulae can be reselected in the
OB report.
EFW2 Estimated Fetal Weight 2
HC/AC / HC/AC
FL/AC / FL/AC×100
FL/BPD / FL / BPD ×100%
AXT / APTD × TTD
CI / BPD / OFD ×100%
FL/HC / FL/AC×100
HC(c) / HC(c) = 2.325×(BPD
2
+ OFD
2
)
1/2
HrtC/TC / HrtC / TC
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