Measurement Range And Accuracy; Clinical Measurements: Range And Accuracy - Siemens ACUSON Antares Instructions For Use Manual

Measurement Range and Accuracy

The following tables describe the variability in accuracy for clinical
measurements.

Clinical Measurements: Range and Accuracy

Direct
Measurement
Range
Distance* 0 – 36 cm
Distance using 0 – 60 cm
SieScape extended
field of view
Trace Area* 0 – 560 cm
Time @ 0 – 9.4 sec
Slow Sweep
Time @ 0 – 4.7 sec
Med Sweep
Time @ 0 – 2.4 sec
Fast Sweep
Velocity 10 – 600 cm/sec
measurements on MPR (slice) quadrants from acquired volumes
* Also applies to
[ 1 ] I N S T R U C T I O N S F O R
Tolerance
Symbol
Tolerance Function or Value (Accuracy)
Tol(D) 3% of the distance or 1.5mm; whichever is greater
assuming 1540 m/sec speed of sound. Does not
apply to trace tool. Distance tolerance using trace
tool is user-dependent.
Tol(D) Linear transducer: 5% of the distance or 1.5 mm;
whichever is greater assuming 1540 m/sec speed
of sound.
Curved transducer: 8% of the distance or 1.5 mm;
whichever is greater assuming 1540 m/sec speed
of sound.
2
Tol(A) 6% of the area or 1.5cm
assuming minimal operator error in tracing the
desired object and assuming 1540 m/sec speed of
sound.
Tol(T) @ 15 msec
Slow Sweep
Tol(T) @ 7.5 msec
Med Sweep
Tol(T) @ 3.8 msec
Fast Sweep
Tol(V) 10% of the velocity or 5 cm/s; whichever is greater
using a J J & A string phantom at 45 degrees
±1 degree.
U S E
6 T e c h n i c a l D e s c r i p t i o n
2
; whichever is greater,
.
6 - 1 9