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Quantitative susceptibility mapping allows the determination of a basic physical property in vivo. Early concepts for QSM were introduced a decade ago and more refined methods have been proposed recently to allow the calculation of magnetic susceptibility from a single orientation, in a clinical setup, and with low reconstruction artefacts. Therefore, QSM has attracted a high number of researchers and is utilized in clinical studies of neurological disorders and is increasingly becoming a topic of research outside the brain.
 

 

TGV QSM Algorithm 

Described in: ** Langkammer, C; Bredies, K; Poser, BA; Barth, M; Reishofer, G; Fan, AP; Bilgic, B; Fazekas, F; Mainero; C; Ropele, S
Fast Quantitative Susceptibility Mapping using 3D EPI and Total Generalized Variation.
Neuroimage. 2015 May 1;111:622-30. doi: 10.1016/j.neuroimage.2015.02.041. PubMed 

Download: Python source code for total generalized variation (TGV) based QSM including 3D EPI test data (68 MB) from the paper.

Alternatively, there are docker and singularity images available. Kindly provided by Steffen Bollmann.

Using tgv_qsm in Windows Subsystem for Linux (WSL 1.0) - by Steffen Bollmann.

Siemens has a WIP package for Aera, Skyra, Verio and Prisma scanners (WIP 1122A QSM) implemented by Kieran O’Brien.

Related: Martin Soellrad's R2* mapping and correction toolbox based on the MRM paper.

 

Overview QSM Algorithms

There is a nice overview of QSM software currently available from Mathieu Boudreau.

 

 

QSM Reconstruction Challenge 2.0 (Seoul 2019)

The 2nd QSM challenge took place at the QSM workshop in Seoul. More information can be found at the conference webpage.

QSM Reconstruction Challenge 1.0 (Graz 2016)

MRI data and Matlab source code: qsm_recon_challenge_2016.zip (240 MB).

Paper of the QSM reconstruction challenge: mrm26830.pdf (MRM webpage:  http://onlinelibrary.wiley.com/doi/10.1002/mrm.26830/full).

 

 

4th QSM Workshop in Graz in 2016

We thank all participants of the 4th International Workshop on MRI Phase Contrast & Quantitative Susceptibility Mapping in Graz!
Pictures and program at the homepage of the QSM workshop 2016.