Mindray Resona I9W - Measurement Accuracy

Measurement 8-5
8.4 Measurement Accuracy
Table 1 Error of 2D Images
Parameter Value Range Error
Distance Full screen Within ±3%.
Area Full screen Within ±10%.
Circ Full screen Within ±10%
Angle Full screen Within ±3%.
Volume Full screen Within ±10 %.
Distance (iScape)
Full screen
Within ±5 % (for linear, wide-convex, and phased
probes)
Full screen Within ±10 % (for micro-convex probes)
Table 2 Error of 3D Images
Parameter Value Range Error
Distance
A/B/C sectional plane image (MPR),
CMPR sectional plane image
Within ±5%. (not including Smart 3D)
Area
A/B/C sectional plane image (MPR),
CMPR sectional plane image
Within ±7%. (not including Smart 3D)
Circ
A/B/C sectional plane image (MPR),
CMPR sectional plane image
Within ±10%. (not including Smart 3D)
Angle
A/B/C sectional plane image (MPR),
CMPR sectional plane image
Within ±5%. (not including Smart 3D)
Volume A/B/C sectional plane image (MPR) Within ±20%. (not including Smart 3D)
Table 3 Time/Motion Measurements
Parameter
Value Range
Error
Distance Full screen Within ±3%.
Time Timeline Display ≤ 2%.
Heart rate Timeline Display Within ±4%.
Velocity (PW
mode)
10-300cm/s (for transcranial application)
10-200cm/s (for non-transcranial
application)
Within ±20% (for transcranial
application)
When angle ≤ 60º, within ±5% (for
non-transcranial application)
Velocity (CW
mode)
10-300cm/s (for transcranial application)
10-200cm/s (for non-transcranial
application)
For transcranial application:
Within ±20% (not including pencil
probe)
Within ±10% (pencil probe)
For non-transcranial application:
When angle ≤ 60º, within ±5% (not
including pencil probe)
Within ±15% (pencil probe)