Y. Duan et al. European Journal of Radiology (2011)

Changes in cerebral hemodynamics after carotid stenting of symptomatic carotid artery

words

MTT（Mean transit time）：平均通过时间CBF（ cerebral blood flow）：脑血流量CBV（ cerebral blood volume）：脑血容量ACA（ territory of anterior cerebral artery）：大脑前动脉供血区MCA（ territory of middle cerebral artery）：大脑中动脉供血区PCA（ territory of posterior cerebral artery）：后动脉供血区frontal watershed 前分水岭区posterior watershed 后分水岭区

To evaluate changes in cerebral hemodynamics after carotid stenting of symptomatic carotid artery in the patients who underwent ischemic stroke caused by carotid artery stenosis

purpuse

methods

Twenty patients with unilateral symptomatic carotid artery stenosis received brain CT perfusion scan a week before and a week after carotid artery stenting.

Six vascular territories such as ACA territory,MCA erritory, PCA territory, basal ganglia, watershed between ACA and MCA territory(frontal watershed), watershed between MCA and PCA territory (posterior watershed) were chosen for comparison

methods

Three absolute values including MTT, CBV and CBF were acquired and analyzed by use of the post-processing software.Relative parameter values were defined as rCBF, rCBV and rMTT through comparing absolute values in symptomatic hemispheres to which in asymptomatic hemispheres.Then the two sets of data before and after treatment with T test for analysist.

results

The mean rMTT decreased significantly in ACA territory, MCA territory and two watershed after treatment, while the mean rCBF increased significantly in those areas . But the mean rCBV had no significant changes in all six vascular territories. In PCA territory, all the parameters had no significant changes.

conclusion

Carotid artery stenting yields satisfactory cerebral p

erfusion in ACA territory, MCA territory,basal gangli

a,frontal watershed and posterior watershed

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