Meeting Banner
Abstract #2754

Simultaneous Whole-Body PET/MRI with Continuous Table Motion

MAGNA25Harald Braun1, Susanne Ziegler1, Daniel H. Paulus1, Jens U. Krause1, Harald H. Quick1

1Institute of Medical Physics, University of Erlangen-Nrnberg, Erlangen, Bavaria, Germany

Simultaneous whole-body PET/MR hybrid imaging has become clinical reality. Usually in MRI and PET data is acquired in a multi-station approach, where the patient table is held at a constant position. This bears some inherent shortcomings: varying sensitivity (PET), distortion in z-direction (MRI), combination artifacts between individual bed positions, etc.. To overcome these shortcomings, we introduce a data acquisition and post-processing approach with continuous table motion (CTM). CTM PET/MR data acquisition was evaluated with a custom-built large field-of-view phantom and on a clinical patient. This approach for the first time enables simultaneous whole-body PET/MR hybrid imaging during continuous table movement.

Abstract PDF E-Poster Video

Keywords

able acquisition acquisitions activity additionally affected allow amount approx around artifacts attenuation axial become better body brick built characteristics chosen clinical combination compartment considered considering constant constrained context continuous coronal correction cubes custom developed diameter dictated distortion distortions drawing enable enables evaluated evaluation examinations examples extent fast feasible field flash flexible furthermore fused geometric geometry grid hardware haste held highest hours hybrid identical implementation individual inherently injected inner inserted institute integrated interface iterations like limitation list long manually measured medical mode motion movement much needed next noise normalization notably patient phantom physics plastic polypropylene position positions positron potential potentially process protocols providing quality quick radioactive reality reconstruction reformat registered renders resolution scale scanner sector sensitivity separates several sharpness shortcomings shot simplified simultaneous slice software spatial speed spin started station stations stir strengths subject suffer supports system table technically temporal terms throughput tomography turbo unit user usually view visibility volume whole yields