Scientific Video describing parameters used in CT/MRI scans in stroke

macgyver

Well-known member
The following video gives a good explanation in layman’s terms regarding the parameters used in CT or MRI scans to determine size of ischemic core, volume of penumbra, blood flow volume etc.

Still trying to get my head around the Tmax parameter at the moment, but my basic understanding is if the time delay is greater than 10 seconds this represents slow blood flow into the penumbra. So the improvement of 11 seconds down to 8 seconds as mentioned in the stroke patent suggests the blood flow had improved and was in a relative sweet spot to give a more accurate prognosis post-scan. However the time delay should be greater than 6 seconds to give a clearer indication to the specialist of what is occuring.

 

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