Interictal Spect with Tc-99m ECD studies in migraine patients. Role of Spect in the diagnosis of migraine with ura in headache-free periods

Aim: The migraine is one of the neurological alterations more frequent provoking a discharge morbility and big inconveniences the one that endures it. The presence of brain perfusion abnormalities during the pain-free intervals of migraine even is fueling of controversies being so numerous the supporters of its existence as whom they deny it. This study was aimed at assessing the presence of cerebral perfusion abnormalities also during the interictal phase and the role of SPECT with Tc99 ECD on diagnosis of this migrainous patients. Materials And Methods: We studied 20 patients (16 woman and 4 man) with diagnose of migraine with aura during a periods without headache and 20 apareaded controls for age and sex of this patients.Was realized brain spect with 925 MBq Tc99m-ECD on a two heads rotating gamma camera (Piker Axis) equipped with a fan-beam collimator. The images were reconstructed using a filter Mezt and presented in courts in the three axes and reconstruction in three dimensions and later they were analyzed by two observers. Results: We found 14 of the patients (70%) with images of focal hypoperfusion with clear interhemispheric asymmetry while on control groups only two have this find (10%) being this difference statistically significant. The part of the brain more affected was the occipital one, though also they predominated over the more widespread hipocaptations. Conclusion: The brain Spect is a useful technology to identify the patients with migraine, being able to be used in the periods without pain. The boss of perfusion in the patients is the located hypoperfusion and is significantly different from that of the controls, It can be explained by an impaired regional cerebral vascular autoregulation may exist even during headache-free intervals in patients suffering from migraine. Future studies must be realized to determine if it exists relation between the zone of hypoperfusion and the type of present symptomatology in the aura