
83
Measurement
menu
Submenu
Unit
Measurement method/
Measurement formula
Comments
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
6.24
PW general measurement
Press [Calc] to enter PW measurement in PW mode. Press the corresponding parameter control button to change the
object of general measurement.
Measurement
menu
Submenu
Unit
Measurement method/
Measurement formula
Comments
Speed
cm/s
See M speed measurement
meas.
cm
See B distance measurement.
Peak
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
SD
Formula
:
SD =Vs/Vd
RI
Formula
:
SD
=
(Vs-Vd)/Vs
Time
s
See M time measurement.
Auto
trace/Manual
trace
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
StD%
Distance1
cm
See B distance measurement.
Distance2
cm
See B distance measurement.
StD%
%
Formula
:
StD%
=
((D1-D2)÷D1)×100%
D1
:
Distance1,
D2
:
Distance2
StA%
Area1
cm
2
See B ellipse measurement
Area2
cm
2
See B ellipse measurement
StA%
%
Formula
:
StA%
=
((A1-A2)÷A1)×100%
A1
:
Area1,
A2
:
Area2
ICA/CCA
ICA
cm/s
See M speed measurement
Pressure(ICA)
mmHg
Formula
:
Pres-
sure
=
4×ICA×ICA/10000
CCA
cm/s
See M speed measurement
Pressure(CCA)
mmHg
Formula
:
Pressure
=
4xCCAxCCA/10000
ICA/CCA
Formula
:
ICA/CCA