The application of 320-slice CT with dual-low-dose in whole brain perfusion imaging in detection of acute cerebral ischemia
10.3969/j.issn.1002-1671.2016.02.030
- VernacularTitle:双低剂量320排 CT 全脑灌注技术在急性期脑缺血中的应用价值
- Author:
Rui FENG
;
Yunlong SONG
;
Xiangsheng LI
;
Yongmin BI
;
Ping WANG
- Publication Type:Journal Article
- Keywords:
computed tomography;
cerebral vascular,ischemia
- From:
Journal of Practical Radiology
2016;(2):281-284
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the feasibility and value of CT perfusion imaging in combination of CTA 320-slice CT with dual-low-dose in detection of acute cerebral ischemia.Methods Forty patients with acute stroke underwent perfusion imaging and CTA using a single scan with 320-slice CT with dual-low-dose schedule.CTA,4D-CTA,4D-perfusion imaging and fusion images were generated at a post-processing workstation.All patients also underwent a 3.0T magnetic resonance imaging with DWI for a comparison.Quality of the images,degree of vascular stenosis,and location of ischemic lesions were evaluated.Results The vascu-lar stenosis or occlusion was found in 33 patients,8 of whom were confirmed by the DSA.The ratio of better images of CTA was 82.5%.CTP showed 297 lesions with abnormal perfusion.202 lesions were confirmed as infarct by DWI,while 95 ones were nor-mal on DWI but with increased DLY and TTP and slightly decreased CBF and CBV in 49,increased DLY and TTP and normal CBF and CBV in 21,and increased DLY and TTP and slightly increased CBF and CBV in 25.Conclusion CT perfusion in combination with CTA by 320-slice CT with dual-low-dose is feasible and useful to observe accurately the vascular structures and the ischemic status of the whole brain at early stage.
