Fig. 8From: Multimodality imaging of neurodegenerative disorders with a focus on multiparametric magnetic resonance and molecular imagingA 82-year-old female with history of rigidity, bradykinesia, hallucinations, and dementia. Axial susceptibility-weighted imaging demonstrates loss of the normal hyperintense signal in nigrosome-1 (arrows), the so-called loss of “swallow tail sign” (a). The normal hyperintense signal in nigrosome-1 is shown in (b) (arrows)Back to article page