8-4 Measurement
8.4 Measurement Accuracy
Table 1 Error of 2D Images
Distance Full screen
Within ±3%; or when the measured value is less
than 40 mm, the error is less than 1.5 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%
Distance (iScape) Full screen
Linear probe: within ±5%
Other probe: within ±10%
Table 2 Volume Measurements
Parameter
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
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%.
PW velocity
Min ≤10cm/s;
Max ≥200cm/s
(For probe L14-6P:
min≤10cm/s; Max≥
150cm/s)
≤5% (correction angle ≤60º)
CW velocity
Min ≤10cm/s;
Max ≥200cm/s
≤5% (correction angle ≤60º)
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.
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