Measurement References; Measurement Accuracy - FujiFilm SonoSite iViz User Manual

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Measurement References

Measurement accuracy

2D Measurement Accuracy and Range
2D Measurement Accuracy
and Range
Axial Distance
Lateral Distance
Diagonal Distance
c
Area
d
Circumference
a
Full scale for distance implies the maximum depth of the image.
b
An RMI 413a model phantom with 0.7 dB/cm MHz attenuation was used.
c
The area accuracy is defined using the following equation:
% tolerance = ((1 + lateral error) * (1 + axial error) – 1) * 100 + 0.5%.
d
The circumference accuracy is defined as the greater of the lateral or axial accuracy and by the
following equation:
% tolerance = ( 2 (maximum of 2 errors) * 100) + 0.5%.
SonoSite iViz Ultrasound System
System
Accuracy By
a
Tolerance
< ±2% plus 1% of
Acquisition
full scale
< ±2% plus 1% of
Acquisition
full scale
< ±2% plus 1% of
Acquisition
full scale
< ±4% plus (2% of
full scale/smallest
Acquisition
dimension) * 100
plus 0.5%
< ±3% plus (1.4%
of full scale/
smallest Acquisition
dimension) * 100
plus 0.5%
b
Range (cm)
Test Method
Phantom 0-26 cm
Phantom 0-35 cm
Phantom 0-44 cm
Phantom 0.01-720 cm2
Phantom 0.01-96 cm
3