Registry of Right-to-left Shunt Detection by Contrast-enhanced Transcranial Doppler in Chinese Population


Phase N/A Results N/A

Eligibility Criteria

Inclusion Criteria

- For group 1: Normal healthy individual without migraine.
- For group 2: Clinical history of migraine diagnosed by a neurologist according to the International Classification of Headache Disorders.

Exclusion Criteria

- Subjects with stenotic intracranial or extracranial arteries or intracranial abnormalities diagnosed with TCD.