Fig. 2.

Illustration of two patients with MRI on the top (a and b) and tumors outlined in dark blue then registered on ^99mTc-MAA SPECT/CT and ⁹⁰Y-microspheres PET/CT via deformable registration. Yellow and light blue contours correspond to SPECT/CT and PET/CT 10% thresholds contours, respectively. First patient (a, c and e) had a very high TNR determined with MRI-based contours: 10 on SPECT/CT and 19 on PET/CT. Second patient (b, d and f) had a very low TNR: 4 on SPECT/CT and 3 on PET/CT. In those cases, for example first patient with a very high TNR had a tumor control during 38 months and second patient with a very low TNR had a tumor control during 2 months