Page 69 of 101
HD
GA=HD(cm)
×
45.23+37.7,50 days ater(contain 50
days)
GSD-H
GA=(GSD-H(cm)+0.55)/0.15
Horse
GSD-V
Refer to Section
8.5.1.1 Distance
GA=(GSD-V(cm)+0.10)/0.14
CRL
GA=14.05+1.16
×
CRL(cm)-0.012
×
CRL
,
20~40days(contain 20 days)
Sheep
BPD
Refer to Section
8.5.1.1 Distance
GA=21.4+1.85
×
BPD(mm),
40days after(contain 40 days)
Others
Same as dog
Same as dog
Same as dog
8.5.2.2 EDD
Standard of pregnancy varies with different animal species, combining gestational age and the
corresponding standard of pregnancy to calculate expected date of confinement.Standard of pregnancy for
different animal species are as follows:
Animal species
Standard of pregnancy
Cat
64 days
Dog
58 days
Cattle
330 days
Horse
285 days
Sheep
145 days
Others
Same as dog
8.5.2.3 Obstetrics Measurements in the PW Mode
1.
Press the Measure key in the frozen PW mode, and the measurement menu displays on the top
left of the
screen.
2.
Select a measurement item, such as [UmbA], on the menu by moving the trackball and press Set
to confirm.
3.
Follow the methods in the following table to perform the measurement, and the measurement
results display in the result box.
Measurement Item
Description
Measurement Method
UmbA
Umbilical Artery
MCA
Middle Cerebral Artery
FetalAO
Fetal Aorta
Desc.AO
Descending Aorta
Placent A
Placent Aorta
Ductus V
Ductus Vein
Refer to Section 8.4.3.6
Spectrum Trace.
8.5.3 Cardiology Measurements
Cardiology measurement can be performed in the 2D (B/Color/PDI) mode or M mode.