High speed MVA. Right internal carotid dissection with extensive infarct. Fixed dilated pupils.
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RADIOPHARMACEUTICAL: 99mTc ECD, 810 MBq QC 91%
Dynamic perfusion study, SPECT/CT studies were obtained. The study shows no perfusion to the cerebral hemisphere or brain stem. There is perfusion noted to the scalp.
IMPRESSION: The Tc 99m ECD cerebral perfusion study is consistent with brain death.
This case demonstrates no tracer (99mTc-ethyl cysteinate dimer (99mTc-ECD)) uptake in both cerebral hemispheres and the posterior fossa confirming the previously clinical suspicion of brain death.