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| The study of the influence of different input artery on CT perfusion parameters |
| LIU Jing-hong1, GAO Si-jia2, SHI Qiang2, FU Qiang2 |
| 1. Department of Radiology, No.1 Hospital of Dalian Medical University, Dalian Liaoning 116001, China;2. Department of Radiology, No.1 Hospital of China Medical University, Shenyang 110001, China |
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Abstract Objective: To explore the effect of perfusion parameters of input different artery in the reconstruction of CT perfusion imaging. Materials and Methods: Thirty-five patients including 8 normals, 27 unilateral middle cerebral artery(MCA) stenosis patients were collected perform normal brain CT scan and CT perfusion imaging. They all had brain CT perfusion imaging after normal brain CT scan. In the reconstruction of cerebral CT perfusion, every data was reconstructed 3 times and the anterior cerebral artery(ACA) were chosen, uninjured side(stroke patients) or left(normal) MCA and injured side(stroke patients) or right(normal) MCA to be input artery respectively, and choosed superior sagittal sinus to be output vein. Drawed region of interest（ROI） in the cortical area of each side and recorded cerebral blood flow(CBF), cerebral blood volume(CBV), and mean transit time(MTT) of ROI. Three data was analysed with one-factor analysis of variance. Results: There is no statistic difference among all parameters in the normals. Otherwise there is statistic difference among all CBF and MTT in unilateral stroke in MCA patients, and there is no statistic difference among CBV. Conclusion: In the reconstruction of cerebral CT perfusion, any large artery can be chosen as input artery in normals, otherwise in the unilateral MCA stenosis patients, the normal ACA should be chosen as input artery.
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Received: 25 January 2007
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Corresponding Authors:
GAO Si-jia
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2007, Vol. 18 
