Evaluation of cerebrovascular reserve in patients with unilateral middle cerebral artery stenosis
10.3760/cma.j.issn.1671-8925.2014.02.018
- VernacularTitle:单侧大脑中动脉狭窄患者脑血管储备力的评估
- Author:
Xiaoxiao DING
1
;
Jin SHI
;
Luna MA
Author Information
1. 空军总医院神经内科
- Keywords:
Middle cerebral artery steno-occlusion;
CO2 inhalation text;
Single-photon emission computed tomography;
Cerebrovascular reserve
- From:
Chinese Journal of Neuromedicine
2014;13(2):188-190
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the cerebrovascular reserve (CVR) of patients with unilateral middle cerebral artery (MCA) steno-occlusion with single-photon emission computed tomography (SPECT) and CO2 inhalation test.Methods SPECT were performed in patients diagnosed as having unilateral MCA steno-occlusion disease in our hospital from October 2010 to March 2012.SPECT were performed in 24 unilateral MCA steno-occlusion patients before and after CO2 inhalation text.Twelve regions of interests (ROIs),6 in the right and 6 in the left,were chosen in each patient; the ratio of regional cerebral blood flow (rCBF％) of all ROIs were calculated,compared between the normal side and the steno-occlusive side,and before and after CO2 inhalation test for CVR.Results Two of 24 patients had normal CVR.And there were four types of cerebrovascular reactivity to CO2:the first,there were no differences ofrCBF％ before and after CO2 inhalation text in 121 ROIs; the sencond,rCBF％ was normal before the CO2 inhalation text and then decreased after the test in 119 ROIs; the third,rCBF％ was decreased before the CO2 inhalation text and then further decreased after the text in 12 ROIs; and the forth,rCBF％ was decreased before the CO2 inhalation text and increased after the text in 72 ROIs.Conclusion There is normal CVR in patients with unilateral middle cerebral artery steno-occlusion;there are four reactions for CVR in patients with unilateral middle cerebral artery steno-occlusive.
