Multimodal imaging in RBD — present and future

Multimodal imaging in neurodegenerative disorders can provide insights on structural, functional and neurochemical alterations that might not be possible via clinical testing alone. New findings on multimodal imaging in idiopathic REM sleep behaviour disorder (iRBD) have implications for the relationship between iRBD, the clinical phenotype of Parkinson disease and the underlying substrate of Lewy body disease, particularly for understanding the pathophysiology and designing disease-modifying therapies.