Alzheimer disease (SPECT)
Presentation
Memory deficit.
From the case:
Alzheimer disease (SPECT)
Nuclear medicine
SPECT - 99MTC-ECD
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Brain perfusion with 99mTc-ECD shows bilateral temporoparietal hypoperfusion.
Case Discussion
Different perfusion patterns have the following probabilities of Alzheimer disease:
- normal: 19%
- bilateral temporoparietal hypoperfusion: 82%
- bilateral temporoparietal hypoperfusion and other defects: 77%
- unilateral temporoparietal hypoperfusion: 57%
- frontal hypoperfusion: 43%
- other large defects: 18%
- multiple small defects: 0%