Siemens ACUSON Cypress Operator's Manual page 267

Accuracy of Derived Calculations
Standard Derived Calculations
The measurement accuracy and range over which that accuracy is valid is pro-
vided in the table below for standard derived calculations.
Accuracy of Standard Derived Calculations
TABLE 56.
Measurement Type
Area
Slope
Velocity
Acceleration
Pressure Half-Time
Velocity Time Integral
Mean Pressure Gradient
ACUSON Cypress™ Operator's Manual
Measurement Accuracies
Maximum Range of
Accuracy
2
200 cm
5000 mm/sec
12 m/sec
100 m/sec
4 sec
900 cm
550 mm Hg
Accuracy ± %
10
10
7
12
12
12
7
10-27