Jan Petr1, Georg Schramm1, Frank Hofheinz1, Jens Langner1, Jrg Steinbach1, Jrg van den Hoff1
1PET center, Department of Radiopharmacy, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
Partial volume correction becomes an important issue in arterial spin labeling. It is usually done using the partial volume maps obtain by segmenting the high resolution T1-weighted images. This brings additional issues with imperfections in segmentation and corrections of image distortion. We propose an alternative by using T1 relaxation times obtained from the Look-Locker sequence to directly obtain the partial volume ratios. These ratios show higher agreement with the perfusion data than the standard T1-weighted images segmentation.