Extended Data Fig. 3: MRI and Ioflupane single photon emission computed tomography imaging after the onset of neurotoxicity.

(a) MRI axial FLAIR (left) and T2 (right) images at the level of the deep brain nuclei (top) and the cerebral cortex (top), conducted at day 101 after CAR-T infusion. Images demonstrate small punctuate hyperintensities present on imaging prior to CAR-T therapy and putatively due to pre-existing microvascular damage. (b) Ioflupane (123-I) scan images, conducted at day 155 after CAR-T infusion, show normal uptake at the level of the basal ganglia.