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Atlas of Brain Perfusion SPECT

Parkinson's Disease Dementia (P.D.D.)
FINDINGS
Tc-99m HMPAO SPECT study (click on images to zoom)

Transaxial slices in red scale (marked)
Transaxial slices in red scale

Transaxial slices in green scale (marked)
Transaxial slices in green scale

Sagittal slices in red scale (marked)
Sagittal slices in red scale

Sagittal slices in green scale (marked)
Sagittal slices in green scale

Coronal slices in red scale (marked)
Coronal slices in red scale

Coronal slices in green scale (marked)
Coronal slices in green scale


IMPRESSION:

  • Bilateral posterior temporal and parietal perfusion deficits.
  • Increased background activity.

    Differential Diagnosis:

  1. Parkinson's disease dementia
  2. Alzheimer's disease
    Note:
    Since Alzheimer's dementia (AD) and Parkinson's disease dementia (PDD) have the same perfusion pattern, it is not possible to distinguish superimposed AD from PDD in Parkinson's disease.

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Last updated: Aug 23, 1995 Redesigned June 1998