TABLE 3

Functional imaging in the differential diagnosis of parkinsonian syndromes

Is this PD or another parkinsonian syndrome associated with degeneration of the nigrostriatal neurons?
Clinical questions where functional imaging may be useful

  • Is this PD or essential tremor?

  • Is this PD or drug induced parkinsonism?

  • Is this PD or vascular parkinsonism?

  • Is this PD or functional parkinsonism?

Clinical questions where functional imaging is unlikely to be useful