CT perfusion imaging and CT subtraction angiography in diagnosing acute ischemic cerebrovascular disease
- VernacularTitle:CT灌注成像及CT减影血管成像诊断急性缺血性脑血管病
- Author:
Xiaoting GUAN
;
Xiang LIU
;
Jie LONG
- Publication Type:Journal Article
- Keywords:
Tomography, X ray computed;
Diagnosis;
Cerebral ischemia
- From:
Chinese Journal of Neurology
2000;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the clinical application of CT perfusion imaging (CTPI) and CT subtraction angiography (CTSA) in the diagnosis of acute ischemic cerebrovascular disease (AICVD). Methods 24 cases with AICVD onset within 24 hours were examined with regular CT, CTPI and CTSA. Some of them took CTPI, MRI, MRA, DSA, SPECT by follow up examinations. Results In 24 cases 11 had regular CT negative results after onset of stroke 3～6 hours in 6 cases,6～12 hours in 3 cases,12～24 hours in 2 cases. Ten cases of them were confirmed by CTPI as having ischemic lesions, 2 cases had middle cerebral artery occlusion (MCAO), and 1 had transient ischemic attack (TIA) with CTPI negative. In 24 cases 13 had regular CT positive rseults, 9 cases had ischemic lesions larger in CTPI than in regular CT,1 case had MCAO and 1 case had internal carotid artery occlusion(ICAO). There were 4 cases with ischemic lesions on regular CT almost having the same range as that of lacunar infarction in CTPI. The peak value of time(PT), mean transit time(MTT), relative flow (RF) in all 24 cases were found obviously changed. The side of ischemic lesion as compared with the opposite side, and the core of ischemic lesion as compared with peripheral zone were found changed significantly ( P
