Welcome to the Tractometer website!

The Tractometer is a tractography evaluation tool. It is used to evaluate the end effects on fiber tracts of different :

  • acquisition parameters & artefacts (b-value, number of directions, denoising or not, averaging or not)
  • local estimation & modeling techniques (tensor, q-ball, spherical deconvolution, spherical wavelets, compartment models)
  • tractography parameters (masking, seeding, stopping criteria)
  • tractography algorithms (deterministic, probabilistic, geodesics, global).
Originally, the Tractometer was developed to work on the FiberCup dataset. Following the ISMRM 2015 Tractography challenge, the system was updated to be more robust and realistic.


  • 2017-05-15: The scoring system used in the Challenge is now available. See the tools page.


The first set of experiments used to produce results for the Tractometer (presented at MICCAI 2012) were based on a revisited FiberCup analysis.

The Tractometer was also used to generate results and evaluate the submissions to the 2013 ISBI Hardi reconstruction challenge.

More recently, the Tractometer was used to score the ISMRM 2015 tractography challenge. Very interesting results were presented in the talk that was given during the Diffusion Study Group session at ISMRM 2015. The slides are available here.

The current goal for the Tractometer is to make it easier for people to submit new phantoms, datasets, tractograms and tractography methods so that better insights can be gained on the current trends.

The Tractometer can highlight limits of the algorithms and contribute to elucidating the open questions in diffusion MRI fiber tracking processing pipelines : from raw data to connectivity analysis.