CCP PET-MR

Collaborative Computational Project in Positron Emission Tomography
and Magnetic Resonance imaging

UCL Seminar: Concurrent Respiratory Motion Correction of Abdominal PET and DCE-MRI using a Compressed Sensing Approach

Date: 
Thursday, November 9, 2017 - 15:00 to 16:00

Speaker: Dr Niccolo Fuin, INSERM, France

Time: Thursday 9/11 at 3pm.

Location: UCL, 25 Gordon Square, B30 and remote attendance (info below). If non-UCL, confirm with Kris Thielemans if it is possible to attend physically.
 
Title: Concurrent Respiratory Motion Correction of Abdominal PET and DCE-MRI using a Compressed Sensing Approach
 
Abstract: We will present an approach for concurrent reconstruction of respiratory motion compensated abdominal DCE-MRI and PET data in an integrated PET/MR scanner. In this study, PET and DCE-MRI data patients were simultaneously acquired on an integrated PET/MR system after administration of 18 F-FDG and gadoterate meglumine. Golden-angle radial MR data were continuously acquired simultaneously with PET data and sorted into multiple motion phases based on a respiratory signal derived directly from the radial MR data. The resulting multidimensional dataset was reconstructed using a compressed sensing approach that exploits sparsity among respiratory phases. The obtained MVFs were incorporated into the PET reconstruction to obtain motion-corrected PET images and in an MR iterative reconstruction algorithm to produce a series of motion-corrected DCE-MRI images (moco_GRASP). The method allows the simultaneous acquisition of respiratory motion-corrected diagnostic quality DCE-MRI and quantitatively accurate PET data in an integrated PET/MR scanner with negligible prolongation in acquisition time compared to routine PET/DCE-MRI protocols.
 
​If I will have time, I will also present my previous work on PET/MR Attenuation Correction in the present of metal implants​: http://jnm.snmjournals.org/content/58/5/840.short

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