Migraine associated cerebral hyperperfusion with arterial spin-labeled MR imaging

Area of Science:

• Neurology
• Radiology
• Neuroimaging

Background:

• Migraine headaches are a common neurological disorder.
• The underlying pathophysiology of migraine, particularly during aura and headache phases, remains incompletely understood.
• Advanced neuroimaging techniques are crucial for investigating cerebral blood flow alterations in migraine.

Observation:

• This case series utilized arterial spin-labeling (ASL), a non-invasive MRI technique, to assess regional cerebral blood flow.
• Eleven patients experiencing migraine headaches were included in the study.
• ASL was performed during active migraine headache episodes.

Findings:

• Abnormal regional cerebral hyperperfusion was observed in a subset of patients during migraine episodes.
• Specifically, 3 out of 11 patients exhibited hyperperfusion.
• The areas of hyperperfusion corresponded spatially to the location of previous migraine aura symptoms in these patients.

Implications:

• These findings suggest a potential link between regional cerebral hyperperfusion and the migraine headache phase, particularly in patients with aura.
• Arterial spin-labeling may serve as a valuable tool for visualizing dynamic cerebral blood flow changes during migraine attacks.
• Further research is warranted to elucidate the precise mechanisms and clinical significance of ASL-detected hyperperfusion in migraine.