BK Medical bkSpecto, Руководство для продвинутых пользователей

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146 Appendix C August 2018 bkSpecto Advanced User Guide (16-01642-01)
6
Tap Biopsy on the control panel to superimpose the puncture line or matrix on
the monitor image.
7
Insert a needle through the puncture guide or grid.
8
Watch the image of the needle tip and measure its deviation from the puncture
line or matrix point shown on the monitor.
9
Decide whether the accuracy is acceptable.
10
If the accuracy is not acceptable, contact your BK service representative.
To calibrate programmable matrices:
1
Fill a suitable tank with saline. The concentration of the saline depends on the
room temperature. It should be 4% NaCl at 25

C (77

F) and 5% NaCl at 20

C
(68

F).
2
Turn on the system and connect the transducer.
3
Make sure that the correct transducer type number is displayed the top of the
monitor, followed by
T , indicating that you are imaging in the transverse plane.
4
Press Biopsy on the control panel to superimpose the matrix on the monitor
image.
5
Tap Needle Guide on the touch screen.
The list of needle guides appears.
6
Tap the matrix you want to calibrate.
7
Mount the transducer in the holder, by twisting the probe in, and put the
transducer pin in the slot on the holder.
8
Then put the transducer (mounted in the holder, and with the grid attached) into
the saline, making sure that the transducer arrays are fully immersed.
9
Verify that there is a image on the monitor, and that the image isn't frozen.
10
Insert a needle through hole D4 in the grid.
The needle echo appears on the monitor.
If the echo is superimposed on the dot in the matrix on the monitor, then insert
a needle through B4 and F4. If the echo for the needles in these holes are also in
the correct position, no further adjustment is required.
11
If the needle echo is not in the correct position relative to the matrix on the
monitor, open the
Settings . Tap Labeling and select Needle Guide .
12
Tap the Needle Guide button to open the Needle Guide window on the monitor.
13
Here you will be able to move the template to the right or to the left, and in and
out. (In = closer to the transducer/down on the monitor; Out = farther from the
transducer/up on the monitor.)
14
Whenever you make changes to the matrix, remember to save your settings.
Then repeat the process from step 10 to verify that the needle echo is
superimposed on the correct dot in the matrix.
15
It may be necessary to adjust the stepper as well. Consult the stepper user guide
for instructions. After you adjust the stepper, use the earlier steps in this
procedure to verify that the matrix is calibrated properly.