Transient sulcal hyperintensities on fluid-attenuated inversion recovery in migraine with aura: transient sulcal hyperintensities in migraine.

Migraine has been found to be associated with patent foramen ovale. However, in practice, it is difficult to show that microemboli via patent foramen ovale can induce a migraine attack. Our patient showed transient sulcal hyperintensities on fluid-attenuated inversion recovery images during a migraine attack. This supports the hypothesis that microemboli via right-to-left shunt may induce migraine attacks through transient occlusion of microcirculation.