3. Alzheimer's Disease

HMPAO-SPECT perfusion images:
transaxial, sagittal and coronal slices in red scale


Transaxial


Sagittal


Coronal

 
  • Reduced perfusion to the temporal and the inferior parietal cortex bilaterally.

  • Symmetric uptake in the basal ganglia and thalami.

    • Differential diagnosis

    1. Alzheimer's disease *
    2. Parkinson's disease with dementia

      * If Parkinson's disease can be excluded, the probability of Alzheimer's disease is greater than 90% with this pattern. Most often, the parietal lobes are more involved than in this case.


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    B. Leonard Holman . . . Puneet K. Chandak . . . Basem M. Garada

    Last updated: Aug 23, 1995