RT Journal Article
SR Electronic
T1 Normal values of cerebrovascular reserve capacity after stimulation with acetazolamide measured by xenon 133 single-photon emission CT.
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 1327
OP 1332
VO 15
IS 7
A1 Leinsinger, G
A1 Piepgras, A
A1 Einhäupl, K
A1 Schmiedek, P
A1 Kirsch, C M
YR 1994
UL http://www.ajnr.org/content/15/7/1327.abstract
AB PURPOSE To determine whether a standardized stimulation challenge with acetazolamide will be helpful for assessing the vasodilatory capacity in patients with obstructive cerebrovascular disease. METHODS To establish normative data of the cerebrovascular reserve capacity, a group of 41 control patients was investigated. The regional cerebral blood flow was measured quantitatively before and after stimulation with acetazolamide using the xenon 133 inhalation method and dynamic single-photon emission CT. RESULTS A significant increase of regional cerebral blood flow was found after administration of 1 g of acetazolamide. By doubling the dose no significant further increase was measured. We found no correlation of either baseline or stimulated flow values with age. However, a linear dependence between the stimulated flow values and their respective baseline values was observed. CONCLUSION The standardized challenge with acetazolamide seems to be a reliable method to determine cerebrovascular reserve capacity quantitatively.