Mindray M5 Exp, Operator'S Manual

Page: 191 / 357

Measurement 8-5
8.4 Measurement Accuracy
Table 1 Error of 2D Images
Parameter Value Range Error
Distance Full screen
Within ±3%; or when the measured value is
less than 40 mm, the error is less than1.5 mm.
Area (Trace) Full screen
Within ±7%; or when the measured value is
less than 16 cm
2 , the error is less than 1.2 cm 2 .
Area (ellipse,
circle)
Full screen
Within ±7%; or when the measured value is
less than 16 cm
2 , the error is less than 1.2 cm 2 .
Angle Full screen Within ±3%.
Table 2 Volume Measurements
Parameter
Value
Range
Error
Volume Full screen
Within ±10 %; or when the measured value is less than 64 cm
3
,
the error is less than 6.4 cm
3
.
Table 3 Time/Motion Measurements
Parameter Value Range Error
Distance Full screen
Within ±3 %; or when the measured value is
less than 40mm, the error is less than 1.5mm.
Time Timeline Display Within ±2%.
Heart rate Timeline Display Within ±4%.
Table 4 Doppler Velocity Measurements
Parameter Value Range Error
Velocity (PW mode) Maximum ≥2.5m/s When angle≤60º, ≤5%.
Velocity (CW mode) Maximum ≥2.5m/s When angle≤60º, ≤5%.
The above measurements are not applicable for the pencil probe (CW2s and CW5s).