Shenzhen Mindray Bio-Medical Electronics Co., Ltd. DC-N2, Руководство оператора

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7-4 Measurement
7.4 Measurement Accuracy
Table 1 Error of 2D Images
Parameter Value Range Error
Distance Full screen Within ±4%
Area Full screen Within ±8%
Circumference / Within ±20%
Angle Full screen Within ±3%.
Distance (iScape) Full screen
Linear and convex-wide probe: within ±10%
Micr-convex probe: within ±15%
Table 2 Volume Measurements
Parameter Value Range Error
Volume Full screen Within ±12%.
Table 3 Time/Motion Measurements
Parameter Value Range Error
Distance Full screen Within ±4%
Time Timeline Display Within ±2%.
Heart rate Timeline Display Within ±5%.
PW velocity 10cm/s~200cm/s
≤
±10% (correction angle
≤
60º)
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.