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EJNMMI Physics
Fig. 2 | EJNMMI Physics

Fig. 2

From: Comparison of PET/CT and PET/MR imaging and dosimetry of yttrium-90 (90Y) in patients with unresectable hepatic tumors who have received intra-arterial radioembolization therapy with 90Y microspheres

Fig. 2

PET/MRI and PET/CT images of the subject with the highest mean liver dose difference of 18.5%. In the first row, there are PET images, in the second row MRI and CT images, respectively, and in the third row fused PET/MRI and PET/CT images, respectively. Due to different field of view and voxel sizes in PET/MRI and PET/CT, the size of the images is different for different modalities and different studies. However, the distribution of 90Y microspheres is practically identical. The mean liver dose obtained from PET/CT was 38.81 Gy and 31.64 Gy from PET/MRI. In PET/MRI image, left image, second row, one can clearly see the tumor and tumor ROI almost perfectly matches the most intense 90Y microsphere distribution

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