Whole-Body PET/MR Attenuation Correction in free breathing using a motion-resolved, Compressed Sensing accelerated gradient-echo sequence with Cartesian k-space sampling

Zielsetzung The acquisition of an attenuation map for each bed position is essential for PET/MR examinations to obtain quantitative PET images. Current attenuation correction (AC) methods are based on breath-hold acquisitions thus hampering areas that might be affected by respiratory motion such as the upper abdomen. Here, we investigated a free breathing approach for attenuation correction.