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Table 2 Description of watershed infarction characteristics (site and side), MRI perfusion, and transcranial Doppler results among cases

From: Microemboli versus hypoperfusion as an etiology of acute ischemic stroke in Egyptian patients with watershed zone infarction

 

N

Percentage

Site of watershed infarction by MRI

External

11

22.0

Internal

32

64.0

Mixed

7

14.0

Side of watershed infarction

Left

34

68.0

Right

16

32.0

MRI perfusion

Hypoperfusion

42

84.0

Normal

8

16.0

Microembolic signal by transcranial Doppler

Yes

16

32.0

No

34

68.0

Etiology

Embolic only

8

16.0

Hypo perfusion only

34

68.0

Mixed

8

16.0

  1. MRI magnetic resonance imaging, N number