Section 4
B-Scan Operation and Use
4
- 5
Res. will decrease the resolution (128 lines) but
increase the scan depth to 60mm.
Normal setting should be Hi Res. Unless there is
a need to increase the imaging depth further into
the orbit.
Pressing this key will cause [+] / [-] keys to
appear. Pressing these keys will enable the user
to either increase (+) or decrease (-) the
brightness of the display.
The annotate feature allows the user to add text
and/or symbols to the stored B-scan image.
1.
Press
[MENU]
and select
[ANNOTATE]
from the drop down
menu.
2.
Use the joystick to align the cursor at
the desired location on the image.
3.
Using the arrow keys, located on the top
and bottom of the text box to scroll and
highlight the desired text/symbol and
press [
SET
]. The selected text will then
appear at the selected position on the
display.
4.
Repeat this procedure for additional text
or press [MENU] to exit.
Note
: Pressing
[EDIT]
will allow the user to add
additional text to the menu.
1.
Use the joystick to move the cursor to
the next available space.
2.
Press
[ADD WORD]
and use the
keypad to type the desired text.
3.
Press
[ENTER]
.
4.
Press
[DONE]
to return to previous
screen.
Pressing this key will enable the user to
download the displayed images from the EZ-
scan to a Personal Computer via the RS-232
connector on the rear of the unit. Once this key
is pressed a status message will be displayed.
Sonomed Scan Viewer Software is available
directly from Sonomed. Information concerning
this software can be obtained by contacting
Sonomed’s customer service department at 1-
800-227-1285.
This key will return the operator to the initial
main screen where the selection of either
[
B-SCAN
] or [
A-SCAN
] can be made.
EXTERNAL CONTROLS
(FRONT PANEL)
GAIN (+/-):
Permits the user to adjust the gain setting for
both A-scan and B-scan examinations. The gain
setting is shown on the display in the
“measurement” screen (A-scan) and the
“examination” screen (B-scan).
TVG (+/-):
The TVG control allows the user to adjust the
“Time Variable Gain” setting while in the B-
scan examination mode. Like the Gain setting
above, this control can only be adjusted while in
“Live” mode. Once the image is “frozen”, the
control is no longer active. Since the anterior
segment of the eye is in close proximity to the
transducer, the energy level is much higher
resulting in more “noise” which may cloud the
area. The TVG control enables the user to adjust
the gain setting for the anterior segment of the
eye, enabling a clearer view. Adjusting both the
Gain and TVG controls is necessary in order to
obtain the clearest and most detailed image.
BRIGHT
ANNOTATE
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