Skip to main content

Table 1 Collateral status according to vascular flow dynamics on dynax–CTA

From: Collateral status evaluation coupled with time window by dynamic axial computed tomographic angiography with a focus on the middle cerebral artery for mechanical thrombectomy

Good Compared to visualization of the M2 or M3 branches in the asymptomatic contralateral hemisphere, the M2 or M3 branches were visualized almost without delay within the ischemic territory
in the symptomatic hemisphere, and prominence and extent was about 70% or more of those in the contralateral hemisphere
Intermediate Compared to visualization of the M2 or M3 branches in the asymptomatic contralateral hemisphere, the M2 or M3 branches were visualized with a short delay within the ischemic territory
in the symptomatic hemisphere, and prominence and extent was about 30 to 70% of those in the contralateral hemisphere
Poor Compared to visualization of the M2 or M3 branches in the asymptomatic contralateral hemisphere, the M2 or M3 branches were visualized with a long delay within the ischemic territory
in the symptomatic hemisphere, and prominence and extent was about less than 30% of those in the contralateral hemisphere
  1. dynax–CTA Dynamic axial computed tomography angiography