Fig. 7

Set of images in a 48-year-old patient with a liver metastasis from sigmoid cancer. High liver uptake is found both in PETAC_CT (a) and PETAC_MR (d), whereas image fusion with low-dose CT (b) and Dixon T1w (e) allow for better anatomical correlation. In low-dose CT due to its low soft tissue contrast no anatomical correlate for the liver metastasis could be found (c). Figures from (f) to (I) present the different sets created from the raw data of the Dixon sequence ((f) T1w in-phase, (g) T1w out-of-phase, (h) water-only and (i) fat-only). The complementary value of different reconstructions can be appreciated as the liver metastases are outlined with different quality in T1w in-phase (f), T1w out-of-phase (g) and fat-only (i).No correlate can be found in the water-only image (h) (This research was originally published in M. Eiber et al., “Value of a Dixon-based MR/PET attenuation correction sequence for the localization and evaluation of PET-positive lesions, (Eiber et al. 2011)” Eur. J. Nucl. Med. Mol. Imaging, vol. 38, no. 9, pp. 1691–1701, 2011.© by the Society of Nuclear Medicine and Molecular Imaging, Inc.)