BK Medical bkSpecto, Advanced User'S Manual

Page: 145 / 164

bkSpecto Advanced User Guide (16-01642-01) 145
Assuming that the transducer is at the bottom of the image, positive offsets move
the matrix to the right or up, negative offsets move it to the left or down.
Tap
Next .
7
Select the symbols ( Marker type ) and color (tap the box) that will be used for
the ruler. If you check Display labels , you can enter names for the rows and
columns.
NOTE:
If you want to be able to have a vertical line displayed at the 0 of the brachy
ruler (see page 141), you must name one of the columns “0”.
8
Tap Finish .
NOTE:
You must disconnect and reconnect the transducer for the changes to take
effect.
Matrix Alignment and Calibration
NOTE:
The best accuracy that can be expected is a 3mm deviation.
Check the alignment of a reusable needle guide or transperineal biopsy matrix if you
have any reason to suspect that it has been damaged. BK recommends that you check
them once a month, or more often in case of heavy use.
To check the alignment of puncture guides and 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
Assemble the needle guide (or brachy stepper and grid) and attach it to the
transducer.
3
Turn on the system and connect the transducer.
4
Immerse the transducer tip in the saline.
5
Start imaging to produce an image on the monitor.
WARNING B-w4
To avoid harming the patient, check the needle alignment (and recalibrate if necessary)
before each use.