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. Author manuscript; available in PMC: 2016 Jun 1.
Published in final edited form as: Magn Reson Med. 2014 Jul 7;73(6):2363–2375. doi: 10.1002/mrm.25335

Figure 8.

Figure 8

Sinograms calculated from a forward projection of the CT scans (shown in Figure 7) for z-positions −7.5 cm, 0 cm and 7.5 cm. The mean attenuation correction factors (ACF) of the 31-channel PET/MR coil, the 8-channel PET/MR and a standard MR-only 32-channel coil are shown for each slice. This estimation shows that while the 31-channel PET/MR would only attenuate between 18–54% of the 511 keV photons (similar to the 8-channel PET/MR coil), an MR-only standard 32-channel coil would attenuate much more photons (up to 218%).