Mindray Hepatus 7

11 - 2 Operator’s Manual
11 Measurement and Report
• Tapping [UnFreeze] to unfreeze the image during a measurement will clear
the basic Measurement data.
• Tapping [Clear All] will clear the measurement caliper and all data in the
result window, such as comments and body marks.
• Ensure that measurement data correctly corresponds to the fetus during
the Obstetric Measurement.
• When the result of auto trace does not match the image exactly, perform
the measurement manually.
11.1.1 Measurement Accuracy
Table 11-1 Basic Dimension Measurements
Parameter Range Error
Distance Full Screen Within ±4%
Area Full Screen Within ±7%
Circ Full Screen Within ±10%
Angle Full Screen Within ±3%
Volume Full Screen Within ±12%
Table 11-2 Basic Time Motion Measurements
Parameter Range Error
Distance Full screen Within ±4%
Time Timeline Display Within ±2%
Heart rate Timeline Display Within ±5%
Velocity (PW mode) 10-200 cm/s (for non-
transcranial application)
When angle ≤ 60°, ≤5%.
Table 11-3 Doppler Performance
Probe Frequency
(MHz)
Color Mode Power Mode PW Mode
Depth
(cm)
Sensitivity
(dB)
Depth
(cm)
Sensitivity
(dB)
Depth
(cm)
Sensitivity
(dB)
C5-1s 2.0 (Pen) ≥ 9 ≥ 18 ≥ 9 ≥ 18 ≥ 9 ≥ 18
2.5 (Gen) ≥ 8 ≥ 20 ≥ 8 ≥ 20 ≥ 8 ≥ 20
3.0 (Res) ≥ 8 ≥ 24 ≥ 8 ≥ 24 ≥ 8 ≥ 24
LFP5-1s 2.0 (Pen) ≥ 12 ≥ 24 ≥ 12 ≥ 24 ≥ 12 ≥ 24
2.5 (Gen) ≥ 12 ≥ 30 ≥ 12 ≥ 30 ≥ 12 ≥ 30
3.0 (Res) ≥ 12 ≥ 36 ≥ 12 ≥ 36 ≥ 12 ≥ 36