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Aim. To approve of diagnostic effectiveness of SWAN (SWI) images in revealing of calcium containing epileptogenic substrates in children with resistant focal epilepsy.Materials and methods. The results of MRI in children with refractory focal epilepsy obtained in the Radiology Department of the Russian State Children Hospital in the period from 2018 to 2020 were observed retrospectively. High-resolution epileptological MR protocol used for investigation of 67 children. SWAN was applied in all cases for identification of calcium containing epileptogenic substrates, including cavernomas, DVA syndrome, cortical gangliogliomas, Sturge-Weber syndrome and tuberous sclerosis complex. All images were received by using MRI 3T 750 W Discovery GE.Results. In 17 cases (25%) SWAN provided important diagnostic information about the nature of the of epileptogenic lesion, its prevalence and borders. Additional earlier invisible structural changes were revealed in 2 cases of SWS and 1 cases of FCD; and in 13 cases SWAN gave us possibility to avoid CT for approving calcium in epileptogenic focus.Conclusion. We believe that adding SWAN in to the epileptological MR protocol is the necessary step for optimizing calcium and blood degradation products identification in the structure of potential epileptogenic focuses. Moreover, it would be very effective instrument for differential diagnosis of cerebral structural changes, specifying its etiology and, hence, would have influence on the therapeutic tactic and surgical strategy in children with focal epilepsy.
Aim. To approve of diagnostic effectiveness of SWAN (SWI) images in revealing of calcium containing epileptogenic substrates in children with resistant focal epilepsy.Materials and methods. The results of MRI in children with refractory focal epilepsy obtained in the Radiology Department of the Russian State Children Hospital in the period from 2018 to 2020 were observed retrospectively. High-resolution epileptological MR protocol used for investigation of 67 children. SWAN was applied in all cases for identification of calcium containing epileptogenic substrates, including cavernomas, DVA syndrome, cortical gangliogliomas, Sturge-Weber syndrome and tuberous sclerosis complex. All images were received by using MRI 3T 750 W Discovery GE.Results. In 17 cases (25%) SWAN provided important diagnostic information about the nature of the of epileptogenic lesion, its prevalence and borders. Additional earlier invisible structural changes were revealed in 2 cases of SWS and 1 cases of FCD; and in 13 cases SWAN gave us possibility to avoid CT for approving calcium in epileptogenic focus.Conclusion. We believe that adding SWAN in to the epileptological MR protocol is the necessary step for optimizing calcium and blood degradation products identification in the structure of potential epileptogenic focuses. Moreover, it would be very effective instrument for differential diagnosis of cerebral structural changes, specifying its etiology and, hence, would have influence on the therapeutic tactic and surgical strategy in children with focal epilepsy.
Tuberous sclerosis is one of the genetically determined neurodermal syndromes, characterized by focal epilepsy, which is resistant to drug therapy in most cases. Tuberous sclerosis has not been surgically treated for a long time due to the multifocal nature of brain damage. However, using new instrumental methods the surgeon can isolate tuber – “drivers”, responsible for epileptic induction, which, therefore, can be a target for surgical removal. The article presents a clinical case of the treatment of pharmacoresistant epilepsy in a 17-year-old girl with tuberous sclerosis and normal neuropsychiatric and cognitive status; the surgeon managed to achieve a complete regression of seizures after the surgical removal of one of the tubers. Using a multimodal complex of examinations, including high-resolution magnetic resonance imaging and invasive electroencephalographic monitoring, the surgeon managed to identify the “inductor” tuber associated with the epileptic initiation zone among multiple cortical tubers. This section of the cerebral cortex was subjected to surgical resection. For the entire postoperative period (16 months) there were no seizures and antiepileptic drugs were canceled; cognitive processes, memory were improved. Thus, active surgical tactics may be effective in more than 50% of patients with tuberous sclerosis and pharmacoresistant epilepsy. This case confirms the need for a multidisciplinary examination prior to the surgery in patients with tuberous sclerosis.
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