Before the procedure, focused history and neurological examination is performed, available imaging, and blood parameters are reviewed. Informed consent regarding the risks of the procedure is taken. Anticoagulants are withheld if possible. Fasting is required 6 hours before the procedure and insulin requirement is reduced by half for those diabetics who are fasting. Neck extension can help to navigate into tortous cerival part of the internal carotid artery. With the catheter in the common carotid artery, the contrast injection rate is 7 to 8 ml/sec with total volume of injection stood at 11 to 12 ml.
Cerebral angiography
Perfusion scanning
Vertebral artery test
Carotid ultrasonography
Thrombodynamics test
Microangiography
Perfusion MRI
Intravascular imaging