Paradoxical hyperfixation of HMPAO in cerebral infarction.

نویسندگان

  • J E Juni
  • K Spicer
چکیده

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منابع مشابه

Paradoxical hyperfixation of hexamethylpropyleneamine oxime in cerebral infarction.

We describe four patients with cerebral infarction and 99mTc-hexamethylpropyleneamine oxime (HMPAO) hyperfixation in distributions corresponding to the infarctions seen at CT and/or MR imaging. Increased HMPAO extraction due to hyperpermeability across the blood-brain barrier and increased retention due to reduced back diffusion of the tracer probably accounted for the increased fractional fixa...

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Spurious hyperfixation of hexamethylpropyleneamine oxime in acute embolic stroke.

A 71-year-old man with atrial fibrillation suddenly had an embolism in the right middle cerebral artery. Single-photon emission CT was performed 4 hours after the onset of stroke and revealed markedly elevated 99mTc-hexamethylpropyleneamine oxime (HMPAO) uptake in the right frontotemporoparietal region. This area of HMPAO hyperfixation corresponded to the area of infarction, as determined by CT...

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Hyperfixation of HMPAO in subacute ischemic stroke leading to spuriously high estimates of cerebral blood flow by SPECT.

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Spuriously High Estimates of Cerebral Blood Flow by SPECT

W e want to report an error in interpreting d,l-hexamethylpropylene amine oxime (HMPAO) tomograms as cerebral blood flow (CBF) in subacute ischemic stroke cases. By simultaneously studying CBF by `33Xe dynamic single-photon emission computed tomography (SPECT), an obvious discrepancy was noted in that the HMPAO tomograms grossly exaggerated the reflow hyperemia following spontaneous reperfusion...

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عنوان ژورنال:
  • AJNR. American journal of neuroradiology

دوره 20 5  شماره 

صفحات  -

تاریخ انتشار 1999