May Nour: UCLA Health Mobile Stroke Unit Becomes The 1st In The World to Perform mCTA In the Field
May Nour, Physician at UCLA Health, shared on LinkedIn:
”A world first in stroke care.
In January 2026, the UCLA Health Mobile Stroke Unit became the first in the world to perform multiphase CT angiography(mCTA)-derived CT perfusion (CTP) in the field.
mCTA does two things at once.
It identifies large vessel occlusions that clinical scores can miss.
It also serves as a surrogate for CTP, helping us determine whether there is brain still to save before the patient ever reaches the hospital.
Tissue salvageability is the question that drives every decision in acute stroke care.
Moving that question out of the hospital and into the ambulance changes what is possible for the patient.
This is what prehospital precision medicine looks like.
Built on the Siemens SOMATOM On.site platform.
Made possible by the UCLA Health Mobile Stroke Unit team, our LA County EMS partners and our collaborators at Siemens Healthineers.
The 2026 AHA/ASA Acute Ischemic Stroke Guidelines now formally recognize Mobile Stroke Units in stroke care.
The field is catching up to what the patients have needed all along.”

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