Conveners
Session 9 - MR-PET and MR-SPECT software and quantification
- Jorge Cabello (Klinikum rechts der Isar (TUM))
Ninon Burgos
(University College London)
19/05/2015, 18:00
3 - Advances in MR-PET and MR-SPECT software and quantification
Talk
In this work, we propose to tackle the problem of attenuation correction in the head & neck by synthesising CT from MR images using an iterative multi-atlas approach.
The proposed method relies on pre-acquired T2-weighted MRI and CT images of the neck. For each subject, the MRI is non-rigidly mapped to the CT.
To synthesise a pseudo CT, all the MRIs in the database are first registered to...
Ester D'Hoe
(MEDISIP Medical Imaging and Signal Processing group, Ghent University, Belgium)
19/05/2015, 18:20
3 - Advances in MR-PET and MR-SPECT software and quantification
Talk
In Time-of-Flight PET/MRI systems accurate attenuation correction, based on the MRI image, is not straight forward. An alternative is attenuation correction based on emission data only. This is for instance done by simultaneous reconstruction of attenuation and activity with the MLAA algorithm, but the method as originally proposed has certain limits. The attenuation can only be determined up...
Charles Watson
(Siemens Healthcare)
19/05/2015, 18:40
2 - Advances in MR-PET instrumentation: systems
Talk
A new positron annihilation imaging modality is described that enables non-destructive measurement of the linear attenuation coefficients (LACs) of positron beams in heterogeneous materials. This positron attenuation tomography (PAT) technique utilizes a positron emission tomography (PET) system embedded within a uniform static magnetic field, such as is found in integrated PET/MRI scanners. ...
