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Edwards et al. Vessel Plus 2021;5:42 https://dx.doi.org/10.20517/2574-1209.2021.18 Page 11 of 14

to reduce radiation exposure, routine CTP in all patients with suspected acute PCS may be worthwhile.
However, at present perfusion thresholds are not validated for PCS, and expert assessment of raw perfusion
maps is advised.

DECLARATIONS
Authors’ contributions
The principal author of the manuscript: Edwards LS
Drafting and revision of the manuscript: Cappelen-Smith C, Cordato D, Bivard A, Churilov L
Conception, drafting and revision of the manuscript: Parsons MW

Availability of data and materials
Not applicable.

Financial support and sponsorship
None.

Conflicts of interest
All authors declared that there are no conflicts of interest.

Ethical approval and consent to participate
Not applicable.

Consent for publication
Not applicable.

Copyright
© The Author(s) 2021

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