Full Digital Ultrasonic Diagnostic Instruments
User’s Manual V1.00
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of
【
B Meas
】
, press
『
Set
』
key;
3. Operate the trackball or the direction keys to move the “+” mark to the desired position, press
『
Set
』
key, make the “+”position as the starting point to be measured;
4. Operate the trackball or the direction keys to move the “+” mark to end point of the
measurement, at the same time it appears rectangle region, operate the trackball or the
direction keys to change the size of the rectangle to make it satisfy the area need to be
measured; press
『
Set
』
key, the peak of histogram is automatically displayed at the right part of
the screen, at the same time the histogram is displayed in the lower left of the screen;
5. Press
『
Measure
』
key to exit the measurement.
10.6 Profile measurement
1. Freeze a valuable image in B, B/B or 4B mode;
2. Press
『
Measure
』
key, the cursor will show “+”, move the cursor to the submenu
『
Profile
』
of
【
B Meas
】
then press
『
Set
』
key;
3. Operate the trackball or the direction keys to move the “+” mark to the desired position, press
『
Set
』
key, make the “+”position as the starting point to be measured;
4. Operate the trackball or the direction keys to move the “+” mark to end point of the
measurement, at the same time a dashed line appears between two measurement marks, press
『
Measure
』
key to exchange the starting point and end point; press
『
Set
』
key, the measured
values are automatically displayed at the right part of the screen, at the same time profile is
displayed in the image area;
5. Repeat the steps 3~4 can measure for several times;
6. Press
『
Measure
』
key to exit the measurement.
10.7 Depth measurement
Operation steps:
1. Choose the valuable image in B mode;
2. Press
『
Measure
』
key, the cursor will show “+”, move the cursor to the submenu
『
Depth
』
of
【
B Meas
】
, press
『
Set
』
key;
3. Operate the trackball or the up/down direction keys to move the “+” mark to the end point of
the measurement, the “D1: ----mm” position of the right hand of the screen will show the depth
value;
4. Press
『
Set
』
key to complete the first measurement;
5. Repeat the steps 3, 4 to complete four groups depth measurement;
6. Press
『
Measure
』
key to exit the measurement.
Note: Left/right direction keys cannot work in the depth measurement.
10.8 Stenosis ratio measurement
Function: measure and calculate the stenosis degree of the blood vessel. There are two kinds of
stenosis ratio, one is distance stenosis ratio the other is area stenosis ratio. Both are calculated
according to the distance and area.
Stenosis ratio formulas:
Distance stenosis ratio: %D = [(D1-D2)/D1] * 100%
Area stenosis ratio: %A = [(A1-A2)/A1] * 100%
Where, D1 is the distance at the non-stenosis position; A1 is the area at the non-stenosis position
either. D2 and A2 are separately the distance and area at the stenosis position.
10.8.1 Distance stenosis ratio measurement
1. Choose a valuable image in B, B/B or 4B mode;
2. Press
『
Measure
』
key, the cursor will show “+”, move the cursor to the submenu
〖
Distance
〗