No abstract available
MeSH terms
-
Aged
-
Aged, 80 and over
-
Angiography, Digital Subtraction*
-
Blood Flow Velocity / physiology
-
Diagnosis, Differential
-
Hemodynamics / physiology*
-
Humans
-
Middle Aged
-
Muscle, Smooth, Vascular / diagnostic imaging
-
Ultrasonography
-
Vertebrobasilar Insufficiency / diagnostic imaging*