%0 Journal Article
%A Heußer, Thorsten
%A Rank, Christopher
%A Berker, Yannick
%A Freitag, Martin
%A Kachelriess, Marc
%T MLAA-based attenuation correction of flexible hardware components in hybrid PET/MR imaging.
%J EJNMMI Physics
%V 4
%N 1
%@ 2197-7364
%C Berlin
%I Springer Open
%M DKFZ-2017-05869
%P 12
%D 2017
%X Accurate PET quantification demands attenuation correction (AC) for both patient and hardware attenuation of the 511 keV annihilation photons. In hybrid PET/MR imaging, AC for stationary hardware components such as patient table and MR head coil is straightforward, employing CT-derived attenuation templates. AC for flexible hardware components such as MR-safe headphones and MR radiofrequency (RF) surface coils is more challenging. Registration-based approaches, aligning CT-based attenuation templates with the current patient position, have been proposed but are not used in clinical routine. Ignoring headphone or RF coil attenuation has been shown to result in regional activity underestimation values of up to 18
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:28251575
%2 pmc:PMC5332322
%R 10.1186/s40658-017-0177-4
%U https://inrepo02.dkfz.de/record/130791