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User Interaction Log

This example focusses on the UserInteractionLog feature. This is an attribute of the Page element.

One application for this feature is to cross-reference the screen XY coordinates captured using eye-tracking software.

When you enable this feature, the application will:

  • lock down all adjustable sizing aspects of the display
  • generate a log file that captures the screen XY coordinates of the displayed viewing windows and the corresponding IJK coordinates of the image volume displayed

See UserInteractionLog in the Scripting References section for log file details.

Prep

For the following example, we will use ChestCT and the PETCTFusion-Tutorial-Data dataset as described in the sample data section.

Download and save the datasets in the subfolders under ImageVolumes folder as shown.

.
└─ ImageQuizzerData/
      └─ ImageVolumes/
          └─ CTChest/
                └─ CTChest.nrrd
          └─ PETCTFusion-Tutorial-Data/
                └─ PETCTFusion/
                      └─ CT1/
                         ├─ 26556672
                         ├─ 26556691
                         ├─ ...
                      └─ CT2/
                      └─ PET1/
                         ├─ 26558596
                         ├─ 26558607
                         ├─ ...
                     └─ PET2/

Script example

This script example has UserInteractionLog="Y" attribute in the secnd Page element.

The first page loads one image volume in the background only while the second page has both a foreground and background image volume loaded.

See details in UserInteractionLog for location and a description of the data captured in these log files.

<Session>
    <Page ID="Patient 1" Descriptor="CT" UserInteractionLog="Y">
        <Image ID="CT" Type="Volume"  ZoomFactor="1.2" PanOrigin="-92 27.5 -225.5" InitialSliceOffset="-245">
                <DefaultDestination>Red</DefaultDestination>
                <Layer>Background</Layer>
                <DefaultOrientation>Axial</DefaultOrientation>
                <Path>ImageVolumes\CTChest\CTChest.nrrd</Path>
        </Image>
        <Image ID="CT" Type="Volume" ZoomFactor="1.5" PanOrigin="-43.96383459076361 63.246218183203815 0.0" InitialSliceOffset="-112">
                <DefaultDestination>Green</DefaultDestination>
                <Layer>Background</Layer>
                <DefaultOrientation>Coronal</DefaultOrientation>
                <Path>ImageVolumes\CTChest\CTChest.nrrd</Path>
        </Image>
        <Image ID="CT" Type="Volume" ZoomFactor=".75" PanOrigin="118 39 0" InitialSliceOffset="91">
                <DefaultDestination>Yellow</DefaultDestination>
                <Layer>Background</Layer>
                <DefaultOrientation>Sagittal</DefaultOrientation>
                <Path>ImageVolumes\CTChest\CTChest.nrrd</Path>
        </Image>
        <QuestionSet ID="Steps" Descriptor="User interaction log feature">
            <Question Type="CheckBox" Descriptor="Testing user interaction log">
                <Option>Layout locked</Option>
                <Option>Log started</Option>
            </Question>
        </QuestionSet>
    </Page>
    <Page ID="Patient2" Descriptor="PET PSMA" Layout="TwoOverTwo" UserInteractionLog="Y">
        <Image DicomRead="Y" Type="Volume" ID="CT">
            <DefaultDestination>Red</DefaultDestination>
            <Layer>Background</Layer>
            <DefaultOrientation>Axial</DefaultOrientation>
            <Path>ImageVolumes\PETCTFusion-Tutorial-Data\PETCTFusion\CT1\26556672</Path>
        </Image>
        <Image DicomRead="Y" Type="Volume" ID="CT">
            <DefaultDestination>Green</DefaultDestination>
            <Layer>Background</Layer>
            <DefaultOrientation>Sagittal</DefaultOrientation>
            <Path>ImageVolumes\PETCTFusion-Tutorial-Data\PETCTFusion\CT1\26556672</Path>
        </Image>
        <Image DicomRead="Y" Type="Volume" ID="CT">
            <DefaultDestination>Yellow</DefaultDestination>
            <Layer>Background</Layer>
            <DefaultOrientation>Coronal</DefaultOrientation>
            <Path>ImageVolumes\PETCTFusion-Tutorial-Data\PETCTFusion\CT1\26556672</Path>
        </Image>
        <Image DicomRead="Y" Type="Volume" ID="PET" ColorTable='PET-Heat' >
            <DefaultDestination>Red</DefaultDestination>
            <Layer>Foreground</Layer>
            <DefaultOrientation>Axial</DefaultOrientation>
            <Path>ImageVolumes\PETCTFusion-Tutorial-Data\PETCTFusion\PET1\26558596</Path>
        </Image>
        <Image DicomRead="Y" Type="Volume" ID="PET" ColorTable='PET-Heat' >
            <DefaultDestination>Green</DefaultDestination>
            <Layer>Foreground</Layer>
            <DefaultOrientation>Sagittal</DefaultOrientation>
            <Path>ImageVolumes\PETCTFusion-Tutorial-Data\PETCTFusion\PET1\26558596</Path>
        </Image>
        <Image DicomRead="Y" Type="Volume" ID="PET" ColorTable='PET-Heat' >
            <DefaultDestination>Yellow</DefaultDestination>
            <Layer>Foreground</Layer>
            <DefaultOrientation>Coronal</DefaultOrientation>
            <Path>ImageVolumes\PETCTFusion-Tutorial-Data\PETCTFusion\PET1\26558596</Path>
        </Image>
        <Image Type="Volume" ID="PET" ColorTable='PET-Heat' >
            <DefaultDestination>Slice4</DefaultDestination>
            <Layer>Background</Layer>
            <DefaultOrientation>Coronal</DefaultOrientation>
            <Path>ImageVolumes\PETCTFusion-Tutorial-Data\PETCTFusion\PET1\26558596</Path>
        </Image>
        <QuestionSet ID="Steps" Descriptor="User interaction log feature">
            <Question Type="CheckBox" Descriptor="Testing user interaction log">
                <Option>Layout locked</Option>
                <Option>Log started</Option>
            </Question>
        </QuestionSet>
    </Page>
</Session>