Table 7.

Studies on Cranioplasty and Transcranial Doppler

Author	Year	Number of patients	Conclusion
Winkler and colleagues	2000	13	↑ MCA velocities after surgery↓ variation in ICA velocity with posture changes. after surgery
Erdogan and colleagues	2003	18	↑ PSV in all main intracerebral arteries after surgery
Kuo and colleagues	2004	13	↑ MCA velocity in healthy side after surgery
Won and colleagues	2008	27	↓ Both MCA and ICA after the surgery
Song and colleagues	2013	43	↑ MCA velocity. Greater increase in those operated earlier
Paredes and colleagues	2015	47	↑ variation in Lindegaard ratio in the defect side in those who will improve. No such a difference after the surgery.

MCA, middle cerebral artery; ICA, internal cerebral artery; PSV, peak systolic velocity.