INTRODUCTION – Correction of motion artifacts is one of the unsolved but highly relevant topics in MRI. Due to the limitations of imaging-based methods that require additional navigator readouts [1], real-time optical motion correction systems have been proposed to perform rigid head motion correction [2,3]. Recently, an inbore optical motion correction system has been proposed that uses a sing...

Numerical simulations of atmospheric turbulence and adaptive optics (AO) wavefront correction are performed to investigate the time scale for fringe motion in optical interferometers with spatial filters. These simulations focus especially on partial AO correction, where only a finite number of Zernike modes are compensated. The fringe motion is found to depend strongly on both the aperture dia...

Medical Imaging Research Center, Department of Nuclear Medicine, KU Leuven, Belgium With the improving resolution of modern PET scanners, any slight motion during the scan can cause significant blurring and loss of resolution. MRI scanners have the capacity to perform quick successive scans and thus provide a means to track motion during a scan. Hence, with the advent of simultaneous PET-MR sca...

Institute of Biophysics and Biomedical Engineering, Science Faculty of University of Lisbon, Portugal The Siemens BrainPET scanner is a hybrid MRI/PET system. PET images are prone to motion artefacts which degrade the image quality. Therefore, motion correction is essential. The library PRESTO converts motion-corrected LORs into highly accurate generic projection data [1], providing high-resolu...