August 2017
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15 Reads
Neurology
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August 2017
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15 Reads
Neurology
September 2016
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11 Reads
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4 Citations
Pediatric Neurosurgery
Melanotic neuroectodermal tumor of infancy (MNTI) is a rare lesion that typically manifests in the first year of life, most commonly involving the facial bones. We present 2 infants with MNTI involving the posterior skull with associated compression of the superior sagittal sinus (SSS). A review of the anatomical locations of MNTI is offered, and the implications of SSS involvement are described. This represents the first known description of MNTI with involvement of the posterior SSS.
July 2013
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222 Reads
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66 Citations
World Neurosurgery
The widely accepted h-index depends on the citation analysis source and does not consider the authorship position, the journal's impact factor, or the age of the paper or author. We investigated these factors in citation statistics of academic neurosurgeons. An uncorrected h-index and the m-quotient, which corrects for career length, were calculated using Scopus and Google Scholar. In a subset of neurosurgeons, we computed the contemporary h-index (hc), which accounts for the age of the publications; the authorship value (AV), weighted by author position; and the journal impact factor (IF). An 'overall' average for AV and IF including most of an author's publications and an average for publications comprising the h-index ('h-index core') were calculated. The mean h-index using Google Scholar was significantly higher than that calculated from Scopus (p=0.0030). m-quotient and hc-index increased with academic rank, with an m-quotient >1 achieved by 69% of chairmen and 48% of professors. The effect of AV was greatest on the higher h-indices. The average IF for the h-index core was higher than the overall IF, which did not correlate with academic rank. Few neurosurgeons consistently publish in high-impact journals. Google Scholar tends to inflate the h-index. The m-quotient and hc-index allow comparisons of researchers across time. Although average journal IF did not differ significantly among neurosurgeons academic ranks, it should be noted for individuals who consistently publish in high-impact journals. We recommend the creation of individual bibliometric profiles to better compare the academic productivity of neurosurgeons.
... 1,2,[9][10][11] Calvarial lesions can have aggressive growth and may invade the brain parenchyma and dural venous sinuses. 12 In the index case, the lesion had a large extracranial component without brain parenchymal invasion. Histologically, this tumor has a distinctive biphasic cell population made of melanin containing large epithelial cells and small blue round cells. ...
September 2016
Pediatric Neurosurgery
... It is stated that measures such as the h-index are a reliable method for evaluating the academic effectiveness of journals; this method reflects the long-term performance and effectiveness of articles (Hodge & Lacasse, 2011). However, instead of relying solely on the hindex, a multiple evaluation method supported by additional indicators such as the m-index and g-index should be adopted, which provides a more comprehensive assessment of impact and performance (Khan et al., 2013). In addition, the effectiveness of the h-index values of journals is a measure of the impact and value of studies in the field of philosophy for children in education on the academic world. ...
July 2013
World Neurosurgery