FujiFilm SonoSite X-Porte User Manual page 188

Table 6-1: 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%.
Table 6-2: M Mode Measurement and Calculation Accuracy and Range
M Mode Measurement
Accuracy and Range
Distance
Time
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
Full scale for time implies the total time displayed on the scrolling graphic image.
d
FUJIFILM SonoSite special test equipment was used.
6-2
a
System Tolerance
< ±2% plus 1% of full
scale
< ±2% plus 1% of full
scale
< ±2% plus 1% of full
scale
< ±4% plus (2% of full
scale/smallest
dimension) * 100 plus
0.5%
< ±3% plus (1.4% of full
scale/ smallest
dimension) * 100 plus
0.5%
System Tolerance
< +/- 2% plus 1% of full
a
scale
< +/- 2% plus 1% of full
c
scale
Accuracy By
Test Method
Acquisition Phantom
Acquisition Phantom
Acquisition Phantom
Acquisition Phantom
Acquisition Phantom
Accuracy By Test Method
Acquisition
Phantom
Acquisition
Phantom
b
Range (cm)
0-26 cm
0-35 cm
0-44 cm
2
0.01-720 cm
0.01-96 cm
Range
b 0-26 cm
d 0.01-10 sec
Measurement references