Application Measurement; Measurement Accuracy - Mindray Z60W Operator's Manual

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
Distance Full screen
Area (Trace) Full screen
Area (ellipse,
Full screen
circle)
Circumference /
Angle Full screen
Distance (iScape) Full screen
Table 2 Volume Measurements
Value
Parameter
Range
Volume Full screen
8-4 Measurement
Value Range
Within ±3%; or when the measured value is less
than 40 mm, the error is less than 1.5 mm.
Within ±7%; or when the measured value is less
than 16 cm
Within ±7%; or when the measured value is less
than 16 cm
Within ±10%
Within ±3%.
Linear probe: within ±5%
Other probe: within ±10%
Within ±10 %; or when the measured value is less than 64 cm
the error is less than 6.4 cm
Error
2
, the error is less than 1.2 cm
2
, the error is less than 1.2 cm
Error
3
.
2
.
2
.
3
,