Interictal arterial spin-labeling MRI perfusion in intractable epilepsy

Area of Science:

• Neurology
• Radiology
• Medical Imaging

Background:

• Epilepsy diagnosis often requires Magnetic Resonance Imaging (MRI).
• Perfusion sequences enhance MRI by visualizing pathological changes.
• Arterial spin-labeling (ASL) MRI offers contrast-free perfusion imaging, beneficial for certain patient groups.

Purpose of the Study:

• To evaluate the utility of ASL MRI perfusion in patients with epilepsy.
• To compare ASL MRI findings with positron emission tomography (PET) and electrophysiological data.

Main Methods:

• 16 patients with epilepsy underwent brain MRI with ASL and PET.
• ASL and PET data were analyzed for perfusion abnormalities.

Main Results:

• ASL MRI demonstrated slightly reduced resolution compared to other methods.
• A correlation was found between ASL, PET, and electrophysiological data.
• Hypoperfusion on ASL corresponded with hypoperfusion on interictal PET scans.

Conclusions:

• ASL MRI perfusion shows a correlation with PET and electrophysiology in epilepsy patients.
• ASL perfusion imaging may be a valuable addition to the standard epilepsy work-up.