
85
Measurement
menu
Submenu
Unit
Measurement method/
Measurement formula
Comments
SD
Formula
:
SD =Vs/Vd
RI
Formula
:
SD
=
(Vs-Vd)/Vs
PI
Formula
:
SD
=
(Vs-Vd)/VMid
HR(Single wave)
bpm
6.28
PW cardiology measurement
Press
[Calc]
to enter PW measurement in the PW cardiology mode. Or press the corresponding p
arameter control button
to
change the cardiology measurement point.
Measurement
menu
Submenu
Unit
Measurement method/
Measurement formula
Comments
LVOT
Top speed
cm/s
See M speed measurement
Peak pressure
mmHg
Formula
:
Pressure = 4 × top
speed × top speed / 10000
Diameter
cm
See B distance measurement.
Diameter surface
cm
2
Formula
:
π * diam. * diam. / 4
Vs
cm/s
See M speed measurement
PPG
mmHg
Formula
:
PPG = 4 × Vs × Vs /
10000
VMid
cm/s
See M speed measurement
MPG
mmHg
Formula
:
MPG = 4 × VMid x VMid
/10000
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
AV
Diameter
cm
See B distance measurement.
Area
cm
2
See B distance measurement.
ACC
cm/s
2
See M speed measurement
AV curve Vs
cm/s
See M speed measurement
AV curve PPG
mmHg
Formula
:
PPG = 4 × Vs × Vs /
10000
AV curve VMid
cm/s
See M speed measurement
AV curve MPG
mmHg
Formula
:
MPG = 4 × VMid x VMid
/10000
AV Vmax velocity
cm/s
See M speed measurement
AV Vmax pressure mmHg
Formula
:
Pressure = 4 × velocity
× velocity / 10000
AV PHT VPeak
cm/s
See M speed measurement
AV PHT pressure
mmHg
Formula
:
Pressure = 4 × VPeak x
VPeak / 10000
AV PHT slope
cm/s
2
AV PHT
s
AV PHT area
cm
2
Formula
:
220 / AV PHT
R-R interval
bpm
AR curve Vs
cm/s
See M speed measurement
AR curve PPG
mmHg
Formula
:
PPG = 4 × Vs × Vs /
10000
AR curve VMid
cm/s
See M speed measurement
AR curve MPG
mmHg
Formula
:
MPG = 4 × VMid x VMid
/10000