Hello Dear,
SPECT or single photon emission computed tomography can be used to diagnose and monitor cerebral hyperperfusion after carotid endarterectomy and may be of particular value for differentiating hyperperfusion from ischemia when characteristic computed tomographic and transcranial Doppler sonographic findings are absent.
Refer http://cat.inist.fr/?aModele=afficheN&cpsidt=2309869
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Hi Doctor,
Thanks for your support.
Is there a test which can diagnose that hyperperfusion is the cause of the headache. we have been through all MRIs and CT scans and blood tests etc.. All say everything is fine.
Regards,
Abhi
Hi,
Yes it is very much possible for hyperperfusion to be the cause of the headache as there is a long period of ischaemia causing less blood supply to the brain.
Hello Doctor,
My question was 'is it a possiblity that hyperperfusion be the cause of the headache'. Nothing could be diagnosed till now. Just wanted your suggestion on what could be the cause of the headache if the tests and scans reveal nothing.
Regards
Hello Dear,
It is believed that cerebral hyperperfusion is caused by loss of
cerebral autoregulation resulting from chronic cerebral ischemia
and that it occurs preferentially in patients with severe ipsilateral or
contralateral carotid disease, increased intraoperative cerebral
perfusion, or severe perioperative hypertension
It may occur within hours to 3 weeks after carotid
endarterectomy and is characterized by symptoms ranging from
headaches, fits, confusion, focal neurologic signs to intracerebral
hemorrhage .
Clinically, cerebral hyperperfusion is
defined as hypertension with symptoms of severe headache,
seizures, and/or confusion.
Urgent treatment of hypertension has to be done. Patients with these factors may require more intensive hemodynamic monitoring, including prolongation of hospitalization in some cases.
REFER http://www.ima.org.il/imaj/ar04jan-13.pdf
Best