For a detailed description of the images included in this database, please refer to the original paper (add link to paper when published).

Some of the images provided have already been used for earlier publications. For that reason, the data are divided in 3 groups with their own characteristics and features.

Group 1: Pre- and post-resection ultrasound images

This group contains 2D and 3D ultrasound images before and after tumor resection. For each of the 14 patients, more than one sweep was acquired pre- and post-resection. One of the pre- and one of the post-resection sweeps were chosen to form a pair for which 10 homologous landmarks were chosen by neuroradiologist Dr David Araujo. These landmarks can be used to compute the distance between the 2 images for the validation of registration algorithms.       See sample images       Download Group1 data (4.6G)       Readme file

Group 2: Pre-operative MRI and pre-resection ultrasound images

This group contains 14 pairs of pre-operative MR and pre-resection ultrasound images (2D and 3D). For each MRI-3DUS pair, homologous landmarks were chosen by 2 experts (Dr Louis Collins and Laurence Mercier). The 6 first patients were also tagged by a third expert, neurosurgeon Dr Claire Haegelen. These landmarks can be used to compute the distance between the 2 images for the validation of registration algorithms. In this group, both the MR and ultrasound images were transformed into the MNI Talairach-like brain-based coordinate space (orientation and position only, no scaling), as the manual taggers found it easier to visualize the MRI in that frame of reference.
      See sample images       Download Group2 data (2.1G)       Readme file

Group 3: Pre- and post-resection MR images

This section includes MR images taken at two different time points: before and after surgery. The images in this group have not previously been used for a publication and do not therefore have any tags available for registration validation. The MRI are provided in their original scanner frame of reference.
      See sample images       Download Group3 data (565M)       Readme file

General instructions

Once you have saved the data on your computer here's what you need to do do detar and unzip it in Linux:
gunzip group?.tar.gz
tar -xvvf group?.tar
Then please have a look at the accompanying readme files for more information.