Samsung ACCUVIX XG Manuel d'utilisateur Page 247

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5-7
Chapter 5 Measurements and Calculations
Measurement Accuracy Table
The following tables show the accuracy of the measurements available using the product. Ensure that
the results of measurement accuracy checks are kept within the ranges specified in the table. Except for
certain applications or probes, the following accuracy ranges should be maintained for measurement of
a straight distance.
NOTE: To ensure accurate measurements, an accuracy check should be performed at least once
per year. If the measurement accuracy falls outside the ranges specified in the following table,
contact Samsung Medison Customer Service.
2D Mode
Measurements
System Accuracy
(Whichever is greater)
Test
Methodology
Accuracy
Based on
Range
Axial Distance
< ± 4% or 1mm Phantom Acquisition Full Screen
Lateral Distance
< ± 4% or 2mm Phantom Acquisition Full Screen
M Mode
Measurements
System Accuracy
(whichever is greater)
Test
Methodology
Accuracy
Based on
Range
Depth < ± 5% or 3 mm Phantom Phantom 1 - 25 cm
Time < ± 5% Signal generator Phantom 0.01 - 11.3 sec
Spectral Doppler Mode
Doppler
Measurement
System Tolerance
(whichever is greater)
Methodology Range
Velocity < ± 15% Acquisition
PW: 0.1 cm/s - 8.8 m/s
CW: 0.1 cm/s - 19.3 m/s
Time < ± 5% Acquisition 10 ms - 9.44 s
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