Siemens Acuson S1000 - Doppler Measurements; M-Mode Measurements; Mixed Mode Measurements; Mode Measurements

Appendix A Technical Description
Instructions for Use A - 35
Doppler
Measurements
Range or Formula Minimum Value Maximum Value
Time Averaged Mode
Velocity; TAMd
(MnVel
1
+MnVel
2
+…+
MnVel
N
)/N
N=Number of Velocities
Averaged
(MdVel
1
-Tol(MdVel
1
)+
MdVel
2
-Tol(MdVel
2
)+ …+
MdVel
n
-Tol(MdVel
n
))/N
(MdVel
1
+Tol(MdVel
1
)+
MdVel
2
+Tol(MdVel
2
)+ …+
MdVel
n
+Tol(MdVel
n
))/N
Resistivity Index (PS-ED)/PS
(PS-Tol(PS)-ED-
Tol(ED))/(PS+Tol(PS))
(PS+Tol(PS)-ED+Tol(ED))/(PS-
Tol(PS))
Pulsatility Index (PS-ED)/TAV
(PS-Tol(PS)-ED-
Tol(ED))/(TAV+Tol(TAV))
(PS+Tol(PS)-ED-Tol(ED))/(TAV-
Tol(TAV))
Slope
(Acceleration)
(V1-V2)/T
(V1-Tol(V1)-V2-
Tol(V2))/(T+Tol(T))
(V1+Tol(V1)-V2+ Tol(V2))/(T-
Tol(T))
Systolic/Diastolic
Ratio
S/D (PS-Tol(PS))/(ED+Tol(ED)) (PS+Tol(PS))/(ED-Tol(ED))
M-Mode Measurements
M-Mode
Measurements
Range or Formula
Minimum Value
Maximum Value
Distance 0 – 24 cm D-Tol(D) D+Tol(D)
Time @
Slow Sweep
0 – 11.2 sec T-Tol(T) @ Slow Sweep T+Tol(T) @ Slow Sweep
Time @
Med Sweep
0 – 5.6 sec T-Tol(T) @ Med Sweep T+Tol(T) @ Med Sweep
Time @
Fast Sweep
0 – 2.8 sec T-Tol(T) @ Fast Sweep T+Tol(T) @ Fast Sweep
Heart Rate 60 – 240 bpm
N/Time for N beats - N/(Time
for N beats+Tol(T))
N = 1, 2, 3, 4, or 5
N/Time for N beats -
N/(Time for N beats-Tol(T))
N = 1, 2, 3, 4, or 5
Mixed Mode Measurements
Mixed-mode
Measurements
Range or Formula Minimum Value Maximum Value
Volume Flow by Area
(TAMn is in cm/s,
Area is in cm
2
)
(TAMn)(Area)(0.06)
*l/min
(TAMn-Tol(TAMn))
(Area-Tol(A))(0.06)
(TAMn+Tol(TAMn))
(Area+Tol(A))(0.06)
Volume Flow by
Diameter
(TAMn is in cm/s,
Area is in cm
2
)
(TAMn)(πD
2
/4)(0.06)
*l/min
Where TAMn is in cm/s
and the area is in cm
2
(TAMn-Tol(TAMn))
(π * (D-Tol(D))
2
/4)(0.06)
Where TAMn is in cm/s and
the area is in cm
2
(TAMn+Tol(TAMn))
(π * (D+Tol(D))
2
/4)(0.06)
Where TAMn is in cm/s and the
area is in cm
2