Valtteri Kaasinen, MD, is a clinical neurologist and a movement disorder specialist who received his medical degree from the University of Turku, Finland in 1996, followed by a PhD in brain dopamine receptor PET imaging of Parkinson's disease in 2000 under the supervision of Professor Juha Rinne. He did his postdoctoral training in 2003 to 2004 in the University of Groningen, The Netherlands, in the brain imaging group of Professor Klaus L. Leenders. Dr. Kaasinen was appointed as adjunct professor in 2005, he has authored over 100 publications and he is the chairman of the Finnish Movement Disorder Society. Since 2004, he has led a research group that focuses on functional brain PET and SPECT neurotransmitter imaging in Parkinson's disease (PD), other movement disorders and behavioral addictions. His group is involved in several projects that aim to improve the clinical value of brain dopamine transporter imaging in PD and atypical parkinsonian disorders.