Mindray DP-50 Exp Vet, Руководство оператора

Страница: 122 / 343

7-4 Measurement
7.4 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%.
Circumference Full screen Within ±10%.
Distance (iScape) Full screen
Micro-convex probe: within ±15%
Other probe: within ±10%
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%.
PW velocity
10 cm/s ~200cm/s
When the correction angle is
≤60º, the PW
velocity ≤±10%.
NOTE: Within the selected field range, the measurement accuracy is ensured within the
range mentioned above. The accuracy specifications are performance in the worst
conditions, or based on the real test for the system, regardless of acoustic speed
error.