Perfusion-weighted MR imaging in persistent hemiplegic migraine

Abstract

PWI should be indicated for patients with migraine attacks accompanied by auras to assess the sequential changes in cerebral perfusion and to better understand its pathogenesis.

CT perfusion improves diagnostic accuracy and confidence in acute ischaemic stroke

“…Subtle perfusion abnormalities in migraine patients are well recognised, with reduced CBF the most commonly described 20–22. One recent report suggested that TTP asymmetry was the most sensitive parameter23 and matches our experience. It would appear that the frequency of abnormalities (1/23 in our series) is quite low, but this may relate to timing as the majority of reports relate to the aura phase.…”

Structural and Functional Neuroimaging in Migraine: Insights From 3 Decades of Research

“…Studies employing PWI or SPECT to investigate hemodynamic changes during acute attacks or soon thereafter showed hypoperfusion or hyperperfusion of cerebral hemispheres that resolved spontaneously after the attacks without permanent sequelae or signs of cerebral ischemia on follow up. 28,29 Proton MR spectroscopy (MRS) showed decreased N-acetylaspartate/creatine ratio in the corresponding hemisphere. Overall, these multimodal imaging data support a primary neuronal dysfunction in FHM.…”

Hemiplegia and Headache: a Review of Hemiplegia in Headache Disorders

“…Fedak et al reported four pediatric cases of SHM where these flow abnormalities spontaneously resolved within 24 h after hospital presentation [23]. Other authors have reported similar findings [24][25][26]. Sugrue et al described a case wherein evidence of cerebral edema without evidence of infarction was documented in a patient with persistent hemiplegia following headache [27].…”