Internal and external dysfunction |
Risk of aneurysm |
Recommendation |
Complete internal dysfunction ("pupil blown") |
With complete external dysfunction |
Highest |
MRI/MRA (CTA) catheter angiogram |
With incomplete external dysfunction |
Highest |
MRI/MRA (CTA) catheter angiogram |
Without external dysfunction |
Minimal |
No imaging |
Incomplete internal dysfunction ("partial pupil") |
With complete external dysfunction |
Uncertain, probably low |
MRI/MRA (CTA) consider catheter angiogram |
With incomplete external dysfunction |
Uncertain, minimal |
MRI/MRA (CTA) consider catheter angiogram |
Without external dysfunction |
Minimal |
No imaging |
No internal dysfunction ("pupil not involved") |
With complete external dysfunction |
Low if isolated |
Observe |
With incomplete external dysfunction |
Uncertain |
MRI/MRA (CTA) consider catheter angiogram |