Olympus EVIS EUS Manuel utilisateur

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

* 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

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

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

3 4

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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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,

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