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68Ga-DOTATOC PET/CT image of a patient with recurrent glioblastoma after co-injection of 10 MBq 68Ga-[Thi8,Met(O2)11]-substance P and 1.7 GBq 213Bi-[Thi8,Met(O2)11]-substance P. The image taken at 1 hour post injection shows high retention of the radiolabelled compound in the tumor area, with some residual activity remaining in the catheter system.
