Optimal ct perfusion thresholds for core and penumbra in acute posterior circulation infarction

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SUMMARY

    Patients were excluded due to the following reasons including; no follow up 24-48 h diffusion weighted MRI, missing CTP data, inadequate CTP scan coverage of the posterior circulation, excessive movement during CTP, absence of complete occlusion (TIMI 0) of a posterior circulation artery (defined as vertebral, basilar or posterior cerebral arteries) on baseline CT angiography, or partial recanalization (TIMI 1-2) on follow up vessel imaging. Group 1 demonstrated evidence of complete occlusion of a posterior circulation artery on follow up imaging, defined by a TIMI of 0. Group 2 demonstrated "major reperfusion . . .

     

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