Susceptibility and chemical shift in MRI

Serge Langlois (1) , Michel Desvignes (1) , Jean-Marc Constans (2, 3) , Marinette Revenu (1)

1 Equipe Image - Laboratoire GREYC - UMR6072
2 Service de Radiologie [CHU Caen]
3 Cyceron - GIP Cyceron

Geometrical distortion in Magnetic Resonance Images can be classified in two main categories : non-linear gradient fields and static and patient induced field heterogenetity. The first kind is machine dependent and can be corrected by calibration or post processing. The second kind will be the one discussed in this paper. It can be important near the skull. Since some registration techniques use these landmarks, field heterogeneity must be corrected for accurate registration.

Domaines: Traitement des images [eess.IV]

Serge Langlois, Michel Desvignes, Jean-Marc Constans, Marinette Revenu. Susceptibility and chemical shift in MRI. Fifth International Conference on Functional Brain Mapping, 1999, Dusseldorf, Germany. pp.S161. ⟨hal-00963727⟩