Mindray Z60W - Application Measurement; Measurement Accuracy

8-4 Measurement
8.3 Application Measurement
The system support following measurement types:
 Abdomen measurements - Used for measurements of abdominal organs (liver, gall
bladder, pancreas and kidney, etc.) and large abdominal vessels.
 OB measurements- Used for measurements of fetal growth indexed (including EFW) as
well as GA and EDD calculations. The fetus can be evaluated through growth graph
analysis and fetal biophysical profile.
 Cardiac measurements- Used for left ventricle function measurements and
measurements of main artery and vein parameters, etc.
 Gynecology measurements - Used for the uterus, ovary and follicles, etc.
 Small Part measurements – Used for small parts such as thyroid.
 Urology measurements - Used for prostate, seminal vesicle, renal, adrenal, micturated
and testicle volume.
 Vascular measurements – Used for carotid, cerebral, upper and lower extremities vessels,
etc.
 Pediatric measurements - Used for hip joint measurement.
 Nerve measurements – Used for nerve structure measurements.
 Emergency measurements - Used for emergency abdomen, obstetric, superficial etc.
8.4 Measurement Accuracy
Table 1 Error of 2D Images
Parameter Value Range Error
Distance Full screen
Within ±3%; or when the measured value is less
than 40 mm, the error is less than 1.5 mm.
Area (Trace) Full screen
Within ±7%; or when the measured value is less
than 16 cm
2
, the error is less than 1.2 cm
2
.
Area (ellipse,
circle)
Full screen
Within ±7%; or when the measured value is less
than 16 cm
2
, the error is less than 1.2 cm
2
.
Circumference / Within ±10%
Angle Full screen Within ±3%.
Distance (iScape) Full screen
Linear probe: within ±5%
Other probe: within ±10%
Table 2 Volume Measurements
Parameter
Value
Range
Error
Volume Full screen
Within ±10 %; or when the measured value is less than 64 cm
3
,
the error is less than 6.4 cm
3
.