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. 1991 Sep;54(9):787-92.
doi: 10.1136/jnnp.54.9.787.

(99mTc)-HM-PAO SPECT and cognitive impairment in Parkinson's disease: a comparison with dementia of the Alzheimer type

U Spampinato  1 , M O Habert, J L Mas, M C Bourdel, M Ziegler, J de Recondo, S Askienazy, P Rondot
Affiliations

(99mTc)-HM-PAO SPECT and cognitive impairment in Parkinson's disease: a comparison with dementia of the Alzheimer type

U Spampinato et al. J Neurol Neurosurg Psychiatry. 1991 Sep.

Abstract

Regional cerebral perfusion was evaluated by single photon emission tomography (SPECT) using (99mTc)-HM-PAO as a tracer, in thirty Parkinsonian patients with (n = 15) or without (n = 15) dementia, nineteen patients with dementia of the Alzheimer type (DAT) and thirteen control subjects. HM-PAO uptake was measured in the frontal, parietal, temporal and occipital cortex and tracer perfusion was expressed as cortical/cerebellar activity ratios. Regional HM-PAO ratios in nondemented Parkinsonian patients did not differ from controls, whereas in demented patients with Parkinson's disease (DPD) a significant reduction was found in the parietal, temporal and occipital cortex. Tracer uptake ratios were significantly reduced in all regions in the DAT group. Thus DPD and DAT shared a common pattern of marked posterior hypoperfusion, although the perfusion defect was greater and more extensive in the DAT patients.

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Comment in

  • (99mTc)-HM-PAO SPECT and dementia in Parkinson's disease.
    Kuiper MA, Weinstein HC, Bergmans PL, Scheltens P, Wolters EC. Kuiper MA, et al. J Neurol Neurosurg Psychiatry. 1992 Oct;55(10):981. doi: 10.1136/jnnp.55.10.981-b. J Neurol Neurosurg Psychiatry. 1992. PMID: 1431975 Free PMC article. No abstract available.

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