MRI Abnormalities Induced by Seizures

Canas, Nuno; Soares, Pedro

doi:10.5772/24725

Cited by 3 publications

(3 citation statements)

References 50 publications

(95 reference statements)

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“…Cerebral edema may cause various magnetic resonance imaging (MRI) abnormalities in human epileptic patients commonly referred to as transient periictal MRI abnormalities. Transient periictal MRI abnormalities are brain MRI signal abnormalities that are attributable to seizure activity and that may be totally or partially resolved on follow‐up MRI studies . Lesions similar to transient periictal MRI abnormalities in people have also been identified in dogs with epileptic seizures …”

Section: Pathophysiology Of Status Epilepticusmentioning

confidence: 99%

Status epilepticus in dogs and cats, part 1: etiopathogenesis, epidemiology, and diagnosis

Golubovic

Rossmeisl

2017

J Vet Emergen Crit Care

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Section: Pathophysiology Of Status Epilepticusmentioning

confidence: 99%

Status epilepticus in dogs and cats, part 1: etiopathogenesis, epidemiology, and diagnosis

Golubovic

Rossmeisl

2017

J Vet Emergen Crit Care

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“…Several researchers have attempted to categorise TMA based on these patterns as an aid to identification and differential diagnosis. The most recent classification, proposed by Canas et al in 2010, establishes 2 types of MRI changes: cortical (type 1) and cortico-subcortical (type 2); type 2 TMA are additionally classified according to whether they have a prominent subcortical component (2A), border an old encephaloclastic lesion (2B), or are associated with remote lesions (2C) [7,8].…”

mentioning

confidence: 99%

“…MRI hyperintensities correspond to vasogenic oedema on T2-weighted sequences, cytotoxic oedema on diffusionweighted sequences, and mixed cerebral oedema on FLAIR sequences. According to most researchers, diffusion-weighted imaging is the most sensitive sequence for detecting seizureinduced TMA; it indicates cytotoxic oedema, which in these cases is reversible [8].…”

mentioning

confidence: 99%

Transient neocortical MRI abnormalities following initial epileptic seizure

León

Lobo

2017

Neurologia i Neurochirurgia Polska

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Perioperative Seizures in Clipping of Unruptured Cerebral Aneurysms

Maeda

Ishikawa

Moroi

et al. 2017

Surg. Cereb. Stroke

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Summary: Seizures, including generalized convulsions and simple and complex partial seizures, rarely occur after surgical clipping of unruptured cerebral aneurysms. We conducted a detailed investigation of cases of seizures after clipping for unruptured aneurysms. A total of 235 patients (78 men and 157 women; mean age, 63.0±9.1 years) with 251 aneurysms underwent surgical clipping of unruptured aneurysms. Intravenous administration of prophylactic antiepileptic drugs was continued for 1 or 2 days after surgery. Seventeen patients (6.7%) had seizures after surgery. Patients who underwent surgery through a transsylvian approach developed seizures significantly more frequently when compared with patients treated through other approaches, such as an interhemispheric approach (p=0.008). Onset of seizures occurred 3.5±2.5 days after surgery, and 13 patients (76.4%) developed seizures within 4 days. Three patients developed generalized seizures, 2 developed secondarily generalized seizures, and 12 developed partial seizures. Magnetic resonance imaging was obtained in 14 patients immediately after a seizure; 4 patients (28.5%) had high signals on diffusion-weighted imaging.Most of the patients discontinued antiepileptic drug therapy within 1 year after surgery. Because most patients with unruptured aneurysms are asymptomatic, seizures after surgery should be prevented whenever possible. Therefore, it is necessary to use appropriate prophylactic treatment for postoperative seizures.

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MRI Abnormalities Induced by Seizures

Cited by 3 publications

References 50 publications

Status epilepticus in dogs and cats, part 1: etiopathogenesis, epidemiology, and diagnosis

Status epilepticus in dogs and cats, part 1: etiopathogenesis, epidemiology, and diagnosis

Transient neocortical MRI abnormalities following initial epileptic seizure

Perioperative Seizures in Clipping of Unruptured Cerebral Aneurysms

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