Full Digital Color Doppler Ultrasonic Diagnostic Instruments (Vet) User’s Manual V1.01
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10.2 Measurement Menu
In the real-time scanning or freezing state, press
Caliper
to pop up the general measurement menu,
press
Measure
key to pop up the specific measurement menu. Taking small parts measurement as an
example to introduce the specific measurement menu:
Exam type
Measurement
Items
Measurement
Sub-Items
Figure 10-2 Measurement Menu
The measurement menu consists of exam type, measurement items and measurement sub-items.
Exam Type
Display the name of the exam type. You can select it on the [Select exam] screen. Different exam
types consist of different measurement items.
Measurement items and sub-items
The measurement items display under the exam type. If there is an icon >> on the right side of the
measurement item, this measurement item contains the measurement sub-item. Move the trackball on
this measurement item and press the
Set
key to display them.
The following sections are described according to the measurement menu.
10.3 Measurement Preset
You can preset the measurement. For details, refer to Section 6.4 Presetting the Measurements.
10.4 Measurement Error
Ultrasound scan and measurements are highly precise, but the measurement errors can still exist due to
the features of the ultrasound signal, the scanning structures and the features of the tissues and liquid. You
can follow the methods below to decrease the errors as little as possible.
Select the probe in accordance with the depth range of the tissue to be measured.
Adopt the higher image magnification during the measurement.
Select the appropriate imaging mode and optimize the image quality.
The following measurement errors should be considered during the measurements. The measurement
accuracy is only valid in the range shown as below.
Error of distance measurement: within ±5%
Error of depth measurement: within ±5%
Error of time measurement: within ±10%
Error of speed (slope) measurement: within ±15%
Error of area measurement: within ±8%
Error of circumference measurement: within ±5%
You should make a diagnosis with a clinical analysis and the measurement results together.
