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Sample Data

If you wish to run the Image Quizzer example quizzes, you can download and save the image volumes using the instructions below.

Some datasets are accessed directly through the Slicer application and others through the tutorial links provided.

Suggested tree structure

This is the tree structure we use for testing and building the example scripts. If you are using a tree structure with customized folder names, you will have to modify the image Path element in the scripts to match your tree layout.

We recommend saving your data in a subfolder (e.g. ImageVolumes) since in the parent database directory (ImageQuizzerData), two other subfolders will be created:

  1. The Users folder which will hold the observer results files.
  2. The SlicerDicomDatabase folder that Slicer automatically creates to store pointers to the loaded DICOM files.
.
└─ ImageQuizzerData/
    │ └─ ImageVolumes/
    │     ├─ MRHead/
    │     │     └─ MRHead.nrrd
    │     ├─ MRBrain/
    │     │     └─ MRBrain.nrrd
    │     ... etc.
    │     ├─ ExtractedSampleData1/
    │     ├─ ExtractedSampleData2/

    (automatically created)
    │     
    ├─ Users/
    └─ SlicerDicomDatabase/

When logging in to the Image Quizzer, users point to ImageQuizzerData as the image database folder. All paths in the example scripts are relative to this folder and begin with ImageVolumes/....

Slicer sample datasets

Some of the sample datasets referenced to run the example scripts can be downloaded directly from the Slicer application. (See Download Sample Data in the Welcome to Slicer module). These include:

  • CTChest
  • MRHead
  • MRBrain Tumor1
  • MRBrain Tumor2
  • CT-MR Brain
  • CT Cardio Volume Sequence
  • TinyPatient
    • Available with developer's mode enabled (in Slicer Edit>Application Settings>Developer)

See also the section for tutorial data links below for more sample datasets.

Download and save

Following is a brief set of commands to download and save any of the image datasets available through the Slicer application.

  • Open 3D Slicer.
  • In the Welcome to Slicer module, select Download Sample Data
  • Select the image dataset to download.
  • Select File>Save in Slicer's menu bar
  • Unselect all check marks under File Name except for the image volume being saved.
  • The default file format for saving data is *.nrrd which will match the script examples.
  • Browse to the folder that you wish to save the sample data.
  • Click on the Save button.

Refer to Slicer's documentation download and save for more more details.

Some example scripts refer to data that can be downloaded and extracted using these links.

DICOM dataset1_TorsoCT see link for "Tutorial Dataset: 3D Slicer DICOM Tutorial Data"

PETCTFusion dataset see link for "Data for Quantitative PET/CT tutorial"

RECIST dataset see link for "Data for RECIST tutorial"

Once downloaded, extract the sample data into the suggested tree structure for plug and play examples.