Olympus EVIS EUS Manuale utente
QUICK-REFERENCE GUIDE –
ELASTOGRAPHY (ELST) MODE
Visualize the target for stiffness evaluation in the B
mode image.
Press the
ELST
key and the mode is switched to the
Elastography mode.
Elastography (ELST) Mode
Strain Ratio / Strain Adjustment Strain Graph Display
1
2
* Note: Make sure it is displayed right below the ultrasound transducer.
* Recommended size of ROI. Adjust the target while being careful not to
include objects other than the target.
Using the
trackball
,
adjust the ROI position.
Press the
SET
button
and adjust the ROI size.
If you want to readjust
the ROI position, press
the
SET
button again.
By allocating 2 ROIs (ROI A
and B) to two targeted regions,
strain ratio between the two
regions can be measured.
The color of the Elastography
images can be adjusted
in 5 steps.
Select the STRAIN GRAPH
tab and the STRAIN GRAPH
Adjustment menu appears.
By pressing the DISPLAY
key, the Strain Graph can be
displayed or hidden.
By pressing the LOCATION key,
the location of the Strain Graph
can be changed.
Select
LOCATION
or
SIZE
using the buttons
on the keyboard.
Using the keys, adjust the
ROI size and position.
Adjust the size and
location of the ROI so the
target is within the ROI.
1 1
2
2
3
3
Adjustment Using the Touch
Panel
Adjustment Using the
Trackball
* Unit of strain indicator is in percent (%). Example: Distortion value would
be 10% if an object of 10 mm length is inflated or shrunk by 1 mm
Strain Graph Adjustment
The
SECTOR
buttons adjust
the width on the time axis
of the STRAIN GRAPH to
be referenced in auto CINE
REVIEW and image averaging.
The
FRAME AVERAGE
button
displays the average elasticity
image of the time set with the SECTOR buttons.
* If the FRAME AVERAGE key is pressed again, the length of time is reset.
The AUTO CINE REVIEW button repeatedly displays the CINE
MEMORY images in the time set with the SECTOR buttons.
* If the AUTO CINE REVIEW button is pressed again, the
CINE MEMORY stops.
QUICK-REFERENCE GUIDE – ELASTOGRAPHY (ELST) MODE
Select the image whose
strain ratio you want to
measure.
Set ROI A and the
average strain value
within the ROI shown.
Set ROI B (in comparison
with A). Then the average
strain value is shown and
the strain ratio (B/A) is
automatically calculated.
Press the STRAIN
RATIO button after
freezing the image.
Strain Ratio Measurement
1
3 4
2
Notes
* If ROIs A and B are set outside the ROI of the elasticity image, the
measurement cannot be made. Set the ROIs A and B within the elasticity
image.
* Strain ratio measurement is available for FREEZE images only. It is not
available with saved images.
E0428750 · 11/15 · PR
Specifications, design, and accessories are subject to change without any notice or obligation on the part of the manufacturer.
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Wendenstrasse 14–18, 20097 Hamburg, Germany
Phone: +49 40 23773-0, Fax: +49 40 233765
www.olympus-europa.com
Disclaimer: Any content or information (“Content”) presented herein is illustrative in nature and
does not guarantee or represent specific information, outcomes, or results. Olympus Corporation,
its subsidiaries, affiliates, directors, officers, employees, agents, and representatives (collectively
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