In 20 patients with ischemic cerebrovascular disease, classic migraine, or angiomas, we compared paired dynamic positron emission tomographic measurements of regional cerebral blood flow using both [O]water and [F]fluoromethane as tracers. Cerebral blood flow was also determined according to the autoradiographic technique with a bolus injection of [O]water. There were reasonable overall correla...

BACKGROUND AND PURPOSE Hemodilution is known to increase cerebral blood flow, but it is not known whether the increase in flow is a direct result of a decrease in viscosity or whether it may be due to compensatory vasodilatation in response to the decrease in oxygen carrying capacity that results from hemodilution. This study is designed to investigate this question. METHODS Changes in region...

In 20 patients with ischemic cerebrovascular disease, classic migraine, or angiomas, we compared paired dynamic positron emission tomographic measurements of regional cerebral blood flow using both [15O]water and [18F]fluoromethane as tracers. Cerebral blood flow was also determined according to the autoradiographic technique with a bolus injection of [15O]water. There were reasonable overall c...

BACKGROUND AND PURPOSE Hemodynamic information obtained by assessing cerebral vasoreactivity is of clinical interest and may have prognostic significance in patients with occlusive carotid disease. The aim of this study was to compare the results of transcranial Doppler and regional cerebral blood flow studies when used to assess cerebral vasoreactivity. METHODS Blood flow velocities in both ...

OBJECTIVE This study determined the relationship between fasting glucose levels of cerebral infarction patients and the hospitalization time and relapse and mortality rates. METHODS A retrospective study was conducted between February 1996 and December 2006 involving 974 inpatients with cerebral infarctions. Fasting blood glucose and lipid levels and blood pressure were measured the morning a...

objective(s): carthamus tinctorius l. (ct) or saffloweris widely used in traditional chinese medicine. this study investigated the effects of ct extract (cte) on ischemia–reperfusion (i/r) brain injury and elucidated the underlying mechanism. materials and methods: the i/r model was conducted by occlusion of both common carotid arteries and right middle cerebral artery for 90 min followed by 24...

Increased Binding of Norepinephrine by Nerves to Cerebral Blood Vessels: Evidence from the Effects of Reserpine on Nerves to Cerebral and Extracerebral Blood Vessels • It has been proposed by others that adrenergic nerves to cerebral blood vessels bind norepinephrine more avidly than do nerves to vessels outside the brain. This suggestion is supported by the present data which show that in the ...

Increased Binding of Norepinephrine by Nerves to Cerebral Blood Vessels: Evidence from the Effects of Reserpine on Nerves to Cerebral and Extracerebral Blood Vessels • It has been proposed by others that adrenergic nerves to cerebral blood vessels bind norepinephrine more avidly than do nerves to vessels outside the brain. This suggestion is supported by the present data which show that in the ...