Skip to main content
EJNMMI Physics
Fig. 3 | EJNMMI Physics

Fig. 3

From: An experimental phantom study of the effect of gadolinium-based MR contrast agents on PET attenuation coefficients and PET quantification in PET-MR imaging: application to cardiac studies

Fig. 3

Comparison of decay-corrected and volume-corrected image-based PET activity concentrations. PET data acquired on the PET-MR system were attenuation corrected by three different methods: (top) AC1 using the CT scan from each increasing step in GBCA, (middle) AC2 by using the first CT scan with no GBCA present, and (bottom) AC3 from a manually generated attenuation map where all voxels have LAC = 0.1 cm−1. Error bars represent one standard deviation of the VOI used to calculate the mean of PET data. No trends in mean image-based activity concentration can be observed while increasing GBCA concentration for any of the attenuation correction methods

Back to article page