Lesion Tracker - Using the Viewer

After you double-click a study, the Lesion Tracking imaging application will be launched. The basic patient and study data is displayed in the Image Viewer.

Viewer

Switching Studies and Series

There are two methods to switch studies and series inside each viewport:

Studies Panel

Studies Panel at the left side of the workspace allows you to change studies and series. Click Studies button to toggle Studies Panel. You can view images in two ways:

  1. Double-click the desired series thumbnail.
  2. Drag and drop the desired series thumbnail on the image viewer.

Studies Panel

Quick Switch Tool

Quick Switch Tool in the top-middle of the workspace allows you to switch studies and series for the active image viewer easily. Selected series will be colored by the theme colors.

Quick Switch Tool

Image Manipulation Tools

Image Manipulation Tools are available in the toolbar at the top of the workspace.

Zoom Tool

There are a couple of ways to zoom the image:

  1. Select Zoom Tool and down on the image with the left mouse button.
  2. Down on the image the right mouse button without selecting Zoom Tool.

Zoom

Window Width & Level

There are a couple of ways to change the window/level of the image:

  1. Select Levels Tool and drag on the image with the left mouse button. Dragging up decreases the level and dragging left decreases the window width.

    Window W/L

  2. Alternatively, you can use default Window/Level Presets which are defined in User Preferences dialog or create your window level values.

    Window W/L Presets

Pan Tool

There are a couple of ways to pan the image:

  1. Select Pan Tool and move the image around the screen with the left mouse button.
  2. Move the image around the screen with the middle mouse button without selecting Pan Tool.

Pan Tool

Stack Scroll Tool

There are a number of ways to scroll images:

  1. Scroll up and down the mouse wheel.
  2. Drag the scroll bar at the right side of the image viewer.
  3. Use Up and Down buttons on the keyboard.

Scroll Tool

Lesion Tracking Basics

View Case Response Criteria

LesionTracker supports Conformance Checks for RECIST 1.1 and click Trial to view Response Criteria details.

Note: Trial button is available if the study is associated with a timepoint.

Response Criteria

Measurements Table

To view measurements and manipulate the lesions, click Measurements button at the top-right of the workspace. The Measurements table will be displayed at the right side of the workspace. To hide the Measurements the table, click Measurements button.

Note: Measurements button is available if the study is associated with a timepoint.

Measurements

Target Tool

  1. To create a target, select Target Tool and click on the image.
  2. Hold, drag and release the mouse button to create the target.

    Target Tool

  3. To label the target, click Add Label button.

    Target Label

  4. To resize the measurement, hover the mouse over the end points of the target then click and drag.

  5. To rename the lesion, click the lesion number in the Measurements table then click Rename

    Rename Target

  6. To delete the lesion, click the lesion number in the Measurements table then click Delete. It will delete the lesion from the Measurements table and the image.

    Delete Target

Completely Resolved (CR) Target Tool

To make a lesion completely resolved, click Target Tool and select CR Target from Target Tool pop up.

CR Target Tool

Unknown (UN) Target Tool

To mark a lesion as unknown, click Target Tool and select UN Target from Target Tool pop up.

UN Target Tool

Non-Target Tool

  1. To create a non-target, select Non-Target Tool and click on the image.
  2. Hold, drag and release the mouse button to create a non-target.

    Non-Target Tool

  3. Select Lesion Location and Lesion Location Response then click Confirm.

    Non-Target Select Location

  4. To resize the measurement, hover the mouse over the end points of the non-target then click and drag.

  5. To rename the lesion, click the lesion number in the Measurements table then click Rename
  6. To delete the lesion, click the lesion number in the Measurements table then click Delete. It will delete the lesion from the Measurements table and the image.

View Lesion

To view the lesion on the image, click the measurement record in the Measurements table then the image which includes the lesion will be displayed by activating the selected lesion.

View Lesion

Conformance Checks

Any lesion that will conflict with Response Criteria for RECIST 1.1 will be flagged in the Measurements table. To view criteria non-conformities, click the icon at the left of the lesion record in the Measurements table.

Conformance Check

Generating PDF Reports

  1. To generate reports of measurements, click Generate Report button at the bottom of the Measurements table.

Generate PDF

  1. A PDF file which includes target and non-target measurements with annotated image snapshots will be created.

Report PDF

Saving Measurements

There a couple of ways to save changes:

  1. Click Save button at the top-right of the workspace.

    Save

  2. Click Study list to save changes and go back to Study List.

    Save

Timepoint Comparison

LesionTracker allows to compare time points and manipulate the measurements on the timepoint images. To launch the compare mode:

  1. Associate a study with Follow-up timepoint then double-click Follow-up study. Follow-up and Baseline studies will be displayed in 1x2 layout and Baseline study will show the image which includes the first target measurement as default.
  2. Measurements in the Follow-up must be created in the same order as they were on Baseline.

    Compare Mode

Comparison

    Comparison tab in the Measurements table allows you to display lesions in the timepoint compared.

Comparison

Key Timepoints

Key Timepoints tab in the Measurements table allows you to display the lesions by the timepoints at the same time.

Key Timepoints

Image Review

To compare the lesions in Baseline and Follow-up, click the lesion record in the Measurements table. The recorded lesions will be displayed on the Baseline and Follow-up images

Stack Scroll Tool**

To scroll between two series synchronously, click More button and select Stack Scroll Tool.

Stack Scroll

Case Progress

Case Progress icon displays the progress of target and non-target lesions which are assessed out of total lesions. Number in the middle of the icon shows the number of lesions which are not assessed.

Assessment Progress

Heads Up Display (HUD) Panel

To have a quick view of the Measurements table, click HUD button at the top-right of the workspace. You can easily move and resize the HUD Panel on the workspace.

HUD Panel

Note: HUD button is only available if the study is associated with a timepoint.

Additional Tools

Temporary Length Measurement

To check the size of a lesion without adding to the Measurements table, select Temp Tool. Temp Tool

Stack Scroll Tool

To scroll images:

  1. Click More button and select Stack Scroll Tool.
  2. Drag down and up on the image viewer with the left mouse button.

Stack Scroll

Reset Image Tool

To reset the geometric orientation, position and magnification of the image in the active image viewer, click More button and select Reset Tool. Reset

Rotate Right Tool

To rotate the image in the active image viewer 90 degree clockwise, click More button and select Rotate Right Tool. Rotate Right

Flip H Tool

To flip the image in the active image viewer horizontally, click More button and select Flip H Tool. FlipH

Flip V Tool

To flip the image in the active image viewer vertically, click More button and select Flip V Tool. FlipV

Invert Tool

To invert the image in the active image viewer, click More button and select Invert Tool. Invert

Magnify Tool

Magnify Tool allows to zoom in a part of the image without changing zoom level of the whole image.

  1. Click More button and select Magnify Tool.
  2. Click and drag around the image with the left mouse button.

Magnify

3.7.9. Ellipse Tool

Ellipse Tool allows you to draw elliptical annotation with mean and standard deviation values.

  1. Click More button and select Ellipse Tool then click on the image.
  2. Hold, move and release the mouse button to create the annotation.

Ellipse

Save Screenshot

To save a screenshot of the current active viewport:

  1. Click More button and click Save Screenshot.
  2. Set image name and sizes and click Download.

Download

CINE Tool

CINE Tool allows to play through stacks of images in the active viewport.

  1. Click More button and click CINE Tool. The CINE dialog will pop up.
  2. Click the desired media options from the CINE dialog.
  3. To close CINE dialog, click CINE Tool.

CINE

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