Kaixin DCU12, Руководство пользователя, Страница: 66 / 87

Full Digital Color Doppler Ultrasonic Diagnostic Instrument (Vet) User’s Manual V1.00
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2. Operate the trackball or the direction keys to move the cursor to the point at the maximum velocity to
be measured, press
『
Set
』
key to fix the point;
3. Operate the trackball or the direction keys to move the cursor to the point at the minimum velocity,
press
『
Set
』
key, the right display area shows the mean pressure gradient on the mean velocity. This
measurement ends;
4. Repeat steps 2 and 3 to start a new measurement.
16.1.7 Ratio measurement
Function: measures the velocity, time or acceleration between two arbitrary segments, and calculate the
ratio between the velocity, time or acceleration.
Velocity
Measure method:
1. Move the cursor to
〖
Velocity
〗
submenu of
〖
Ratio
〗
in
【
PW Meas
】
menu, press
『
Set
』
key to enter
measurement status;
2. Operate the trackball or the direction keys to move the cursor to the first point, press
『
Set
』
key, fix the
point;
3. Operate the trackball or the direction keys to move the cursor to the second point, press
『
Set
』
key, the
right display area shows two velocities values, ratio and stenosis ratio. This measurement ends;
4.Repeat steps 2 and 3 to start a new measurement.
Time
Measure method:
1. Move the cursor to
〖
Time
〗
submenu of
〖
Ratio
〗
in
【
PW Meas
】
menu, press
『
Set
』
key to enter
measurement status;
2. Measure the first time interval, press
『
Set
』
key to confirm;
3. Measure the second time interval, press
『
Set
』
key to confirm, the right display area shows two time
intervals, ratio and stenosis ratio. This measurement ends;
4.Repeat steps 2 and 3 to start a new measurement.
Acceleration
The measurement method is the same as the Time measurement.
16.1.8 Cardiac output measurement
Function: calculates cross sectional area, velocity integral.
Measure method:
1. Move the cursor to
〖
CSA
〗
submenu of
〖
CO
〗
in
【
PW Meas
】
menu, press
『
Set
』
key to enter
measurement status;
2. Operate the trackball or the direction keys to move the cursor to the starting point to be measured,
press
『
Set
』
key and fix the starting point of the measurement;
3. Operate the trackball or the direction keys to move the cursor to the end point of the measurement,
the right display area shows the measured value CSA in real-time;
4. After finish the CSA, move the cursor to
〖
CO
〗
in
【
PW Meas
】
menu, choose
〖
CO
〗
in the pop-up
submenu, press
『
Set
』
key;
5. Operate the trackball or the direction keys to move the cursor to the first point, press
『
Set
』
key, fix the
point;
6. Operate the trackball or the direction keys to move the cursor to the second point, press
『
Set
』
key, the
right display area shows the CO measured value. This measurement ends.
16.1.9 Flow volume measurement
Function: calculates cross sectional area, velocity integral and heart rate.
Measure method:
1. Move the cursor to
〖
Heart Rate
〗
submenu of
〖
Flow
〗
in
【
PW Meas
】
menu, press
『
Set
』
key to enter
measurement status, first measure “Heart Rate”;
2. Move the cursor to
〖
CSA
〗
submenu of
〖
Flow
〗
in
【
PW Meas
】
menu, press
『
Set
』
key, then measure
“CSA”;