c) If a Site was selected using the OLED controls before Select was pressed, the results box
will reflect the Site
i. Users can delete the data point by clicking on the onscreen ‘x’
ii. Users can assign to a different Site or Segment
iii. Users can ‘Enter’ the data point in the worksheet by pressing the “Enter Data’
OLED.
7. Freeze the image, and replay the image if necessary.
8. Perform other measurements or add annotations to the image if desired.
9. Store the single-frame or multi-frame image if desired.
10. Unfreeze, reposition the ROI if desired, and press the Select key to start another
ARFI acquisition if desired and repeat the above steps.
a) 10 samples per site is typical
11. When all data has been collected, press B knob or the configured key to exit the ARFI mode,
and return to B mode imaging.
ARFI Mode Image Optimization
While in ARFI, the softkey OLEDs display options specific to ARFI.
ARFI Control
Description/Use
Liver Segment
Indicates which liver segment is being measured (values: 1, 2, 3, 4a, 4b, 5, 6, 7, 8)
Push the dial to turn the onscreen graphic on and off.
Turn the dial to change the segment and onscreen graphic display which will
automatically label ARFI acquisitions by segment to be stored in the report
If this control is off, users can assign ARFI measurement to a generic site or liver
segment after it has been acquired as described in calculations section.
Site selection
Provides labeling and site selection for assignment into the worksheet when liver
segment is not being used. (values= Site 1, Site 2, Site 3, Site 4, Site 5, Site 6)).
Turn the dial to change the site and onscreen graphic display which will automatically
label ARFI acquisitions by site or be stored in the report
If this control is off, users can assign ARFI measurement to a generic site or liver
segment after it has been acquired as described in calculations section.
Enter Data
If Liver Segment or Site Selection is ‘On’ and the data onscreen is acceptable, user may
press this OLED to enter the data into the ARFI worksheet.
Enter All Data
If Liver Segment or Site Selection is ‘On’ and the data onscreen is acceptable, user may
press this OLED to enter all the data onscreen into the ARFI worksheet.
Add Site
Add site to results box instead of adding to existing site results to allow multiple sites’
results onscreen simultaneously
Clear Results
Clears all data onscreen (data already stored in report will remain)
m/s , kPa, m/s+kPa
Units of measure: Control switches between kPa and m/s during an active exam.
Delete Data
User points to and clicks on ‘X’ onscreen, which removes a data point.
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