
84
Measurement
menu
Submenu
Unit
Measurement method/
Measurement formula
Comments
Flow volume
Diameter
cm
See B distance measurement.
TVI
cm
Time
s
See M time measurement.
HR(Single wave)
bpm
SV
ml
Formula
:
0.785* diam.* di-
am.*|TVI|
CO
l/min
Formula
:
SV*HR
(Single
wave)/1000
6.25
PW abdomen measurement
See PW general measurement.
6.26
PW OB measurement
Press the
[CALC]
button to enter PW measurement in PW OB mode. Or press the corresponding P
arameter control button
to change the OB measurement point.
Measurement
menu
Submenu
Unit
Measurement method/
Measurement formula
Comments
Umb A
Aorta
Descending
aorta
Arteria Uteri-
na(Lt)
Arteria Uteri-
na(Rt)
Pulmonary
arteries
MCA
Vs
cm/s
See M speed measurement
Pressure
mmHg
Formula
:
Pressure
=
4×Vs×Vs/10000
Vd
cm/s
See M speed measurement
Under pressure
mmHg
Formula
:
Pressure
=
4 × Vd × Vd
/10000
VMid
cm/s
See M speed measurement
Pressure (VMid)
mmHg
Formula
:
Pressure = 4 × VMid x
VMid /10000
TVI
cm
SD
Formula
:
SD =Vs/Vd
RI
Formula
:
SD
=
(Vs-Vd)/Vs
PI
Formula
:
SD
=
(Vs-Vd)/VMid
HR(Single wave)
bpm
6.27
PW GYN measurement
Press [Calc] to enter PW measurement in PW GYN mode. Or press the corresponding parameter control button to
change the GYN measurement point.
Measurement
menu
Submenu
Unit
Measurement method/
Measurement formula
Comments
Umb A
MCA
Uterine A
Foetal AO
Vs
cm/s
See M speed measurement
Pressure
mmHg
Formula
:
Pressure
=
4×Vs×Vs/10000
Vd
cm/s
See M speed measurement
Under pressure
mmHg
Formula
:
Pressure
=
4 × Vd × Vd
/10000
VMid
cm/s
See M speed measurement
Pressure (VMid)
mmHg
Formula
:
Pressure = 4 × VMid x
VMid /10000
TVI
cm