多期CTA重建ColorViz融合图血管分级在急性缺血性脑卒中患者中的临床研究OA北大核心CSTPCD

Objectives:To investigate the diagnostic value of the ColorViz summation maps of multi-phase CT angiography(mCTA)based on FastStroke software in new cerebral infarct lesions of patients with acute ischemic stroke(AIS).Methods:The data of 69 AIS patients with unilateral anterior circulation occlusion was collected prospectively.All the enrolled patients underwent mCTA scanning(arterial phase,venous phase and late venous phase).The postprocessing of CT images used the Colorviz method from FastStroke software of GE Healthcare,which could combine vascular information from all phases of mC TA into a time-variant color-coded map.All patients underwent magnetic resonance-diffusion weighted imaging(MR-DWI)within 3 days.MR-DWI examination was used as the gold standard for diagnosing new cerebral infarct lesions.The diagnostic ability of mCTA ColorViz summation maps was evaluated.Results:The sensitivity of the mCTA ColorViz summation maps to detect new infarct lesions in gray matter area was 90.3%,and that in white matter area was 36.7%.The subjective vascular grading score of mCTA ColorViz summation maps was moderately negatively correlated with the infarct size of MR-DWI(r=-0.540,P<0.001).Conclusion:The mCTA ColorViz summation maps based on FastStroke software had certain value in the diagnosis of new cerebral infarct in patients with AIS,which showed higher sensitivity in gray matter area and lower sensitivity in white matter area.