Cross-Modality Priors in Tomography

Multimodality techniques are increasingly used in tomography. They include methods where a subject is imaged with two or more modalities either sequentially or simultaneously, as well as coupled techniques where user-controlled probes generate stimulated signals read by a complementary measurement system. Examples of the former include Positron Emission Tomography/Magnetic Resonance Imaging (PET-MRI), or (Near Infra Red/Magnetic Encephalography (NIR-MEG); examples of the latter include PhotoAcoustic Tomography (PAT) and Magnetic Resonance Elastography (MRE). Whenever inverse problems are ill-posed, regularisation is required to convey stability to the reconstruction. In the multimodality techniques mentioned above, regularisation may be imposed by proposing that one of the modalities is worse-posed and should be guided by the other which is well, or at least better, posed. Such methods include local structural priors, non-local priors, and joint information theoretic priors. A more recent suggestion is to jointly solve the two inverse problems using a prior that reflects both within modality and cross-modality information. 
In this minisymposium we will present recent progress in these techniques.

Organizers:
Simon R. Arridge, University College London, London,  UK (  This email address is being protected from spambots. You need JavaScript enabled to view it. )
Matthias Ehrhardt, University College London, London,  UK (  This email address is being protected from spambots. You need JavaScript enabled to view it. )

Invited Speakers 

Berkin Bilgic, Martinos Center for Biomedical Imaging, USA,  This email address is being protected from spambots. You need JavaScript enabled to view it.

Matthias Joachim Ehrhardt, University College London, UK,  This email address is being protected from spambots. You need JavaScript enabled to view it.

Daniil Kazantsev, University of Manchester, UK,  This email address is being protected from spambots. You need JavaScript enabled to view it.

Thomas Page, University of Bremen, Germany,  This email address is being protected from spambots. You need JavaScript enabled to view it.