Kaixin DCU12, Руководство пользователя, Страница: 43 / 87

Full Digital Color Doppler Ultrasonic Diagnostic Instrument (Vet) User’s Manual V1.00
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B. Ellipse method measurement
Function: measures the circumference/area of a closed region with the ellipse approximations.
1. Move the cursor to
〖
Ellipse
〗
submenu of
〖
Cir/Area
〗
in
【
B Meas
】
menu, press
『
Set
』
key;
2. Operate the trackball or the direction keys to move the “+” mark to the desired position, press
『
Set
』
key and make the “+” position as the starting point of the measurement;
3. Operate the trackball or the direction keys to move the “+” mark to the end point of the measurement,
at the same time appears an elliptic curve, rotate
【
Value
】
knob to change the minor axis of the ellipse
to make it satisfy the region need to be measured, the measured values are displayed at the built-in
characters “Cir1: mm, Area1: cm
2
” on the right side of the screen;
4. Press
『
Measure
』
key to exchange the starting point and end point;
5. Press
『
Set
』
key to finish the first time measurement;
6. Repeat the steps from 2 to 5 to complete multi-group data measurement.
13.1.3 Volume measurement with two-axis method
Function: measures the volume of the target object. The method only needs to measure the vertical
section of the target object.
Formula of two-axis method: (π/6) × A × B
2
Where, A is the major axis of the ellipse; B is the minor axis of the ellipse.
1. Move the cursor to
〖
2-Axis
〗
submenu of
〖
Volume
〗
in
【
B Meas
】
menu, press
『
Set
』
key;
2. Operate the trackball or the direction keys to move the “+” mark to the desired position, press
『
Set
』
key and make the “+” position as the starting point of the measurement;
3. Operate the trackball or the direction keys to move the “+” mark to the end point of the measurement,
at the same time appears an elliptic curve, rotate
【
Value
】
knob to change the minor axis of the ellipse
to make it satisfy the region need to be measured, the measured values are displayed at the built-in
characters “Area1: cm
2
, Volume1: cm
3
” on the right side of the screen;
4. Press
『
Measure
』
key to exchange the starting point and end point;
5. Press
『
Set
』
key to finish the first time measurement;
6. Repeat the steps from 2 to 5 to complete multi-group data measurement.
13.1.4 Angle measurement
Function: measures the included angle of two straight lines. (0
°
-180
°
)
Operation steps:
1. Move the cursor to
〖
Angle
〗
menu item in
【
B Meas
】
menu, press
『
Set
』
key;
2. At first draw line along one hand of the measured angle, referring to the “Distance” measurement;
3. Then draw line along the other hand of the measured angle, referring to the “Distance” measurement.
Finish the measurement, the included angle of two lines and their length show on the right side of the
screen;
4. Repeat the steps from 2 to 3 to measure for several times.
13.1.5 Histogram measurement
Function: measures the grey distribution of ultrasonic echo signals within a closed region, and indicates
with histogram. The target region needs enclosed with ellipse. Histogram is only measured on the frozen
image.
1. Freeze a valuable image;
2. Move the cursor to the
〖
Histogram
〗
menu item in
【
B Meas
】
menu, press
『
Set
』
key;
3. Operate the trackball or the direction keys to move the “+” mark to the desired position, press
『
Set
』
key and make the “+”position as the starting point of the measurement;
4. Operate the trackball or the direction keys to move the “+” mark to end point of the measurement, at
the same time the elliptical curve appears, rotate
【
Value
】
knob to change the minor axis of the ellipse