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Stereotactic Functional Neurosurgery
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Month: January 2021

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  • 2021 Archives
  • Jan Archives

Human autonomy and the frontal lobes. Part II: Patient behavior in complex and social situations: the “environmental dependency syndrome”. Lhermitte F. Ann Neurol. 1986 Apr;19(4):335-43.

  • Posted by Marwan Hariz
  • Categories Publications
  • Comments 0 comment

SUMMARY: Imitation and utilization behavior have previously been described in terms of a simple interaction between an examiner and a patient, and were interpreted as an excessive dependence on environmental cues. In this study, patient dependence was observed in complex …

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Endovascular deep brain stimulation: Investigating the relationship between vascular structures and deep brain stimulation targets. Neudorfer C, Bhatia K, Boutet A, Germann J, Elias GJ, Loh A, Paff M, Krings T, Lozano AM. Brain Stimul. 2020 Oct 6;13(6):1668-1677.

  • Posted by Marwan Hariz
  • Categories Publications
  • Comments 1 comment

SUMMARY: The authors establish the relationships between cerebrovascular system and DBS targets and investigate the feasibility of endovascular stimulation as an alternative to DBS. Neuroanatomical targets as employed during deep brain stimulation (anterior limb of the internal capsule, dentatorubrothalamic tract, …

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High Frequency Deep Brain Stimulation of Superior Cerebellar Peduncles in a Patient with Cerebral Palsy. Lin S, Zhang C, Li H, Wang Y, Wu Y, Wang T, Pan Y, Sun B, Wu Y, Li D. Tremor Other Hyperkinet Mov (N Y). 2020 Oct 7;10:38

  • Posted by Marwan Hariz
  • Categories Publications
  • Comments 0 comment

SUMMARY: Background: Report of the first case of a cerebral palsy patient, who failed to recover 2 years after GPi DBS; DBS was administered on both superior cerebellar peduncles (SCPs) and dentate nuclei (DNs). The monopolar stimulation results suggested that …

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Dentate nucleus stimulation for essential tremor. Paraguay IB, França C, Duarte KP, Diniz JM, Galhardoni R, Silva V, Iglesio R, Bissoli AB, Menezes JR, Carra RB, Lepski G, Barbosa ER, Ciampi de Andrade D, Teixeira MJ, Cury RG. Parkinsonism Relat Disord. 2020 Dec 3;82:121-122.

  • Posted by Marwan Hariz
  • Categories Publications
  • Comments 0 comment

SUMMARY: A patient with very severe ET and major brain atrophy was operated with bilateral DBS of the nucleus dentatus with impressive results as seen on video with blinded evaluation available here: https://doi.org/10.1016/j.parkreldis.2020.12.001 COMMENTS: The dentate has been a target …

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Radiofrequency ablation for DYT-28 dystonia: short term follow-up of three adult cases. Shiro Horisawa, Kenkou Azuma, Hiroyuki Akagawa, Taku Nonaka, Takakazu Kawamata, Takaomi Taira. Ann Clin Transl Neurol 2020 Oct;7(10):2047-2051.

  • Posted by Marwan Hariz
  • Categories Publications
  • Comments 0 comment

SUMMARY: Mutations in the lysine methyltransferase 2B (KMT2B) gene have recently been reported to be associated with childhood-onset generalized dystonia. Three patients underwent either a staged unilateral pallidotomy and contralateral pallidothalamic tractotomy (19-year-old man, 2-year follow-up), a unilateral pallidothalamic tractotomy …

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Radiofrequency Ablation of Prelemniscal Radiations for the Treatment of Non-Parkinsonian Tremor. Navarro-Olvera JL, Diaz-Martinez JA, Covaleda-Rodriguez JC, Carrillo-Ruiz JD, Soto-Abraham JE, Aguado-Carrillo G, Velasco-Campos F. Stereotact Funct Neurosurg. 2020;98(3):160-166.

  • Posted by Marwan Hariz
  • Categories Publications
  • Comments 0 comment

SUMMARY: A series of cases successfully treated by Raprl radiofrequency (RF) lesions: Six patients with predominant unilateral tremor on the right arm: 4 intention, 1 cerebellar and 1 rubral tremor. RF lesions were performed in Raprl. at 1-year follow-up, in …

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Unilateral pallidotomy as a potential rescue therapy for cervical dystonia after unsatisfactory selective peripheral denervation. Yijie Lai, Peng Huang, Chencheng Zhang, Liangyun Hu, Zhengdao Deng, Dianyou Li, Bomin Sun, Wei Liu, Shikun Zhan. J Neurosurg Spine 2020 Jun 26;1-9.

  • Posted by Marwan Hariz
  • Categories Publications
  • Comments 0 comment

SUMMARY: The authors retrospectively analyzed patients with primary CD who underwent unilateral pallidotomy after Selective peripheral denervation (SPD). At a mean final follow-up of 5 years, TWSTRS severity subscores and total scores were significantly improved (n = 12, mean improvement …

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Successful Relief of Abdominal Dystonia After Sequential GPi Pallidotomy with 2-Year Follow-Up. Fahmi A, Asadullah, Aji YK, Aprianto DR, Subianto H, Turchan A. World Neurosurg. 2020 Dec;144:68-70.

  • Posted by Marwan Hariz
  • Categories Publications
  • Comments 0 comment

SUMMARY: A 48-year-old man presented with abdominal dystonia and complaints of involuntary undulating and contraction movements of his left abdominal wall for 5 years. Lesioning of the right GPi successfully relieved his symptoms. The symptoms recurred at 3 months and …

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Microelectrode Recording and Radiofrequency Thalamotomy following Focused Ultrasound Thalamotomy. De Vloo P, Milosevic L, Gramer RM, Dallapiazza RF, Lee DJ, Fasano A, Hutchison WD, Lozano AM, Schwartz ML, Kalia SK. Stereotact Funct Neurosurg. 2020 Sep 16:1-4.

  • Posted by Marwan Hariz
  • Categories Publications
  • Comments 0 comment

SUMMARY: The electrophysiological properties of previously MRgFUS-sonicated thalamic neurons have not yet been described. We report on an ET patient who underwent an MRgFUS thalamotomy but experienced tremor recurrence. We expanded the MRgFUS-induced thalamic cavity using radiofrequency (RF), with good …

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Radiofrequency Ablation Through Previously Effective Deep Brain Stimulation Leads for Parkinson Disease. Stern MA, Isbaine F, Qiu D, Riley JP, Boulis NM, Gross RE. A Retrospective Series. World Neurosurg. 2020 Dec;144:e750-e765.

  • Posted by Marwan Hariz
  • Categories Publications
  • Comments 0 comment

SUMMARY: Retrospective chart review of all patients that underwent radiofrequency ablation of the STN or GPi through indwelling DBS leads performed prior to hardware removal at our institution. We generated patient specific anatomical models to determine lesion locations and volumes. …

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