Journal of Clinical Neuroscience Impact Factor & Information

Publisher: Neurosurgical Society of Australasia, Elsevier

Journal description

The aims of the Journal of Clinical Neuroscience are to publish work relating primarily to clinical neurosurgery and neurology, and the related neurosciences such as neuro-pathology, neuro-radiology, neuro-ophthalmology and neuro-physiology. The journal has a broad international perspective, and emphasises the advances occurring in Asia, the Pacific Rim region, Europe and North America. The Journal acts as a focus for publication of major clinical and laboratory research, as well as publishing solicited manuscripts on specific subjects from experts, case reports and other information of interest to clinicians working in the clinical neurosciences.

Current impact factor: 1.32

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 1.318
2012 Impact Factor 1.253
2011 Impact Factor 1.247
2010 Impact Factor 1.165
2009 Impact Factor 1.17
2008 Impact Factor 1.19
2007 Impact Factor 0.801
2006 Impact Factor 0.673
2005 Impact Factor 0.665
2004 Impact Factor 0.834
2003 Impact Factor 0.735
2002 Impact Factor 0.543
2001 Impact Factor 0.392
2000 Impact Factor 0.178
1999 Impact Factor 0.144
1998 Impact Factor 0.292
1997 Impact Factor 0.262

Impact factor over time

Impact factor
Year

Additional details

5-year impact 1.31
Cited half-life 4.40
Immediacy index 0.22
Eigenfactor 0.01
Article influence 0.39
Website Journal of Clinical Neuroscience website
Other titles Journal of clinical neuroscience
ISSN 1532-2653
OCLC 31197430
Material type Periodical, Internet resource
Document type Journal / Magazine / Newspaper, Internet Resource

Publisher details

Elsevier

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Pre-print allowed on any website or open access repository
    • Voluntary deposit by author of authors post-print allowed on authors' personal website, arXiv.org or institutions open scholarly website including Institutional Repository, without embargo, where there is not a policy or mandate
    • Deposit due to Funding Body, Institutional and Governmental policy or mandate only allowed where separate agreement between repository and the publisher exists.
    • Permitted deposit due to Funding Body, Institutional and Governmental policy or mandate, may be required to comply with embargo periods of 12 months to 48 months .
    • Set statement to accompany deposit
    • Published source must be acknowledged
    • Must link to journal home page or articles' DOI
    • Publisher's version/PDF cannot be used
    • Articles in some journals can be made Open Access on payment of additional charge
    • NIH Authors articles will be submitted to PubMed Central after 12 months
    • Publisher last contacted on 18/10/2013
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: In this study, we utilized the USA surveillance, epidemiology, and end results (SEER) database to examine factors influencing survival of glioblastoma multiforme (GBM) patients. GBM is the most common primary malignant brain tumor in adults and despite advances in treatment, prognosis remains poor. Using the SEER database, we defined a cohort of adult patients for the years 2000-2009 with confirmed GBM and minimum follow-up of 12months. A total of 14,675 patients with GBM met the inclusion criteria. Demographic, clinical, and treatment variables were examined. Death was the primary outcome. Median survival time was 11months. Patients had increasingly longer survival over the decade span. We found, on multivariate analysis, that significantly worse survival was associated with age >75years, male sex, unmarried status, and non-Hispanic Caucasian race/ethnicity. Patients in the Northeast had a significantly lower risk of mortality. Patients with tumors that were non-lateralized and >3cm fared worse. Patients who did not receive adjuvant radiation also had worse outcomes. Gross total resection imparted a survival advantage for patients compared to biopsy or partial resection. Thus, this report adds to the growing body of literature supporting the positive role of maximal resection on patient survival. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.03.032
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    ABSTRACT: We report a rare patient with an intrasphenoidal Rathke's cleft cyst (RCC) and review the literature. RCC are benign epithelium lined cysts containing mucoid material, which typically occur in a location that is either entirely intrasellar, or intrasellar with suprasellar extension (intra-suprasellar). RCC in a completely extrasellar location are uncommon. An intrasphenoidal RCC is extremely rare with only two patients reported in the literature to date. Preoperative diagnosis is difficult due to the uncommon location and absence of any characteristic radiological features. However, it remains of utmost clinical relevance because it may limit the operative management to biopsy sampling of the cyst wall and drainage of the contents via the transsphenoidal route. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.05.001
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    ABSTRACT: We report a 51-year-old Asian man with primary angiitis of the central nervous system (PACNS) with atypical presentation as a mass lesion. PACNS is an uncommon condition causing inflammation and destruction of the blood vessels of the central nervous system. The aetiology is unclear and multiple mechanisms have been proposed. Its incidence is estimated at 2.4 per million per year, affecting patients of all ages (median 50years) and more commonly Caucasian men. In Australia, 12 patients fulfilled the diagnostic criteria for PACNS between 1998 and 2009 at The Royal Melbourne Hospital, a university-affiliated tertiary referral centre. The accurate and timely diagnosis of PACNS is very challenging due to disease mimicry and the absence of specific serological tests. This patient illustrates additional diagnostic difficulty with his atypical PACNS presentation as a mass lesion. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.03.030
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    ABSTRACT: We describe the management of patients with newly diagnosed glioblastoma multiforme (GBM) in a population-based cohort and compare this to a previously studied cohort. We performed a retrospective cohort study of patients diagnosed with GBM from 2006-2008 in Victoria, Australia. Patients were identified from the population-based Victorian Cancer Registry and their treating doctors surveyed by questionnaire. Outcomes were then compared to a study of GBM patients who were diagnosed between 1998 and 2000 using an identical methodology. We reviewed 351 eligible patients. There were slightly more males (62%) and a minority had multifocal disease (13%). Total macroscopic resection, partial resection or biopsy only was performed in 32%, 37% and 24% of patients, respectively. The majority of patients were referred to a radiation oncologist and medical oncologist postoperatively. A total of 56% of patients were treated with postoperative radiotherapy with concurrent and sequential temozolomide and had a median survival of 14.4months. This was significantly better than patients treated with postoperative radiotherapy alone in the current or earlier cohorts (2006-2008: median survival 6.2months, p<0.0001 versus 1998-2000: 8.9months, p<0.0001). This study demonstrates that postoperative chemoradiation has become the standard of care in this Victorian population with an associated improvement in median survival. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.03.029
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    ABSTRACT: We present a 23-year-old woman who was diagnosed with a malignant peripheral nerve sheath tumor (MPNST), 17months following the resection of a schwannoma. MPNST is rare and is usually associated with neurofibromatosis. The typical treatment of resection and radiation is difficult to achieve in the spine. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.05.016
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    ABSTRACT: We describe a 31-year-old woman with a history of migraines without aura, who presented to our emergency department due to a monocular visual disturbance. This was misdiagnosed as being related to her migraine, however, it was subsequently found to be caused by a central retinal vein occlusion. Patients suffering from migraine can experience visual disturbances in the form of auras. The neuropathological basis for this phenomenon is thought to be a spreading depression in the visual cortex, causing a hemifield active visual phenomenon. Missing the diagnosis of central retinal vein occlusion is common, especially in the setting of an initially normal fundoscopy examination. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.03.057
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    ABSTRACT: The authors demonstrate the utility of portable intraoperative CT scans for the rapid identification of ventricular catheter tip location after Ommaya reservoir placement. The O-arm (Medtronic Sofamor Danek, Memphis, TN, USA) was utilized to confirm ventricular catheter placement intraoperatively. Conventionally, a postoperative CT scan is obtained prior to Ommaya reservoir use to ensure proper catheter placement. By obtaining these images intraoperatively, revisions may be performed without the need for an additional surgical procedure, and the reservoir may be utilized immediately postoperatively. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.05.020
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    ABSTRACT: The objective of this study was to evaluate the outcomes of patients with neoplastic meningitis (NM) following Ommaya reservoir placement in order to determine whether any patient factors are associated with longer survival. NM is a devastating late manifestation of cancer, and given its dismal prognosis, identifying appropriate patients for Ommaya reservoir placement is difficult. The authors performed a retrospective review of 80 patients who underwent Ommaya reservoir placement at three medical centers from September 2001 through September 2012. The primary outcome was death. Differences in survival were assessed with Kaplan-Meier survival analyses. The Cox proportional hazards and logistic regression modeling were performed to identify factors associated with survival. The primary diagnoses were solid organ, hematologic, and primary central nervous system tumors in 53.8%, 41.3%, and 5%, respectively. The median overall survival was 72.5days (95% confidence interval 36-122) with 30% expiring within 30days and only 13.8% surviving more than 1year. There were no differences in median overall survival between sites (p=0.37) despite differences in time from diagnosis of NM to Ommaya reservoir placement (p<0.001). Diagnosis of hematologic malignancy was inversely associated with death within 90days (p=0.04; odds ratio 0.34), older age was associated with death within 90days (p=0.05; odds ratio 1.5, per 10year increase in age). The prognosis of NM remains poor despite the available treatment with intraventricular chemotherapy. There exists significant variability in treatment algorithms among medical centers and consideration of this variability is crucial when interpreting existing series of Ommaya reservoir use in the treatment of patients with NM. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.04.003
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    ABSTRACT: We present our experience with hypofractionated stereotactic radiotherapy (HSRT) using 15 fractions to treat benign conditions of the cavernous sinus (CS) and emphasise the outcome in terms of cranial nerve (CN) function and toxicity for long term safety and efficacy. We performed a retrospective review of prospectively collected data on 112 patients with benign tumours of the CS treated with HSRT between 1 January 1998 and 31 December 2009. While all tumours involved the CS, a separate analysis was undertaken for meningiomas and pituitary adenomas. The median follow-up was 77months (range: 2.3-177). Fifty-seven patients (51%) had a diagnosis of meningioma and 55 (49%) had pituitary adenomas. Prior to HSRT, 82 patients (73%) underwent microsurgery. The median tumour volume was 6.6cm(3) for meningiomas and 3.4cm(3) for pituitary adenomas (interquartile range: 2.8-7.9), and the mean prescribed dose was 38Gy (range: 37.5-40.0) to the tumour margin, delivered in 15 fractions. After HSRT, 57% of all preexisting cranial neuropathies either resolved or improved and 38% remained stable, whereas 5% deteriorated. The diagnosis of meningioma was the only variable associated with recovery of cranial neuropathy (p<0.001). Permanent CN complications occurred in three patients (3%). The 5 and 10year actuarial freedom from progression for patients with meningiomas was 98% and 93%, respectively, and for patients with pituitary adenomas this was 96% and 96%, respectively. We demonstrate low rates of CN morbidity after HSRT and the possibility of resolution or improvement in CN function for common histologies involving the CS. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.03.026
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    ABSTRACT: We report a patient who presented with confusion and expressive aphasia at the onset of a cortical venous reflux (CVR) related to a known dural carotid-cavernous fistula (DCCF). CVR and venous congestion are rare findings in a DCCF, however, it is important to recognize these findings early to reduce the associated risks of venous hemorrhage and infarction. To our knowledge, no previous report has described an association of expressive aphasia with CVR from a DCCF. This patient highlights the potential for venous congestion secondary to CVR from a DCCF presenting with a constellation of symptoms, including confusion and expressive aphasia with corresponding MRI findings. Clinicians should consider a DCCF in the differential diagnosis of this clinical presentation, with corroborative imaging findings. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.05.022
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    ABSTRACT: We present a 64-year-old woman who was evaluated after being found unresponsive. Imaging revealed a foramen of Monro cavernoma resulting in hydrocephalus. Supratentorial cavernomas are most frequently found in the cerebral cortex, and although ventricular cavernomas do occur, they are rarely located in the foramen of Monro. Foramen of Monro cavernomas are extremely dangerous, requiring aggressive management when identified. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.03.043
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    ABSTRACT: We report a woman who presented with rapidly progressive dementia and hypoglycorrhachia and discuss the approach and differential diagnosis for her condition. Rapidly progressive dementia poses a variety of challenges to the treating clinician, not only due to the speed of disease progression, but also due to the poor prognosis if intervention is delayed. The differential diagnosis of a patient presenting with rapid cognitive and functional decline is broad and includes degenerative, infectious, toxic, and neoplastic etiologies, some of which can be identified clinically through history and physical examination. Diagnostic evaluation using gadolinium-enhanced MRI, electroencephalography, and serum and cerebrospinal fluid testing is often required. The utility of testing for cerebrospinal fluid 14-3-3 antigen and tau is also reviewed. Published by Elsevier Ltd.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.05.007
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    ABSTRACT: We present a man, with a complex medical and surgical history, who had a large pelvic non-appendiceal cystadenoma, presenting as a cystic sacral mass causing obstructive urinary symptoms and renal failure. Mucocele should be included in the differential diagnosis of patients who present with large sacral masses, and who have a significant history of pelvic and abdominal surgery and inflammatory bowel disease. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.04.006
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    ABSTRACT: We present a novel, minimally invasive, navigation-guided approach for surgical treatment of degenerative spondylolisthesis (DS) that is a hybrid of the two most common techniques, posterior interbody fusion (PLIF) and transforaminal interbody fusion (TLIF). DS is an acquired condition with intersegmental instability of one or more lumbar motion segments. Seven patients with single level lumbar DS underwent lumbar arthrodesis utilizing the hybrid technique (HLIF) in our center. Using a standard unilateral midline approach a decompression and partial facetectomy on one side was performed, allowing for implantation of a specially designed interbody cage. Pedicle screws were placed using neuronavigation in a vertical vector on the side of the partial facetectomy and dorsolaterally (percutaneous) on the contralateral side. Patient and operative data, numeric rating scale (NRS) pain scores, core outcome measures index (COMI) and Oswestry disability index (ODI) were recorded preoperatively as well as 6 weeks, 3months, 6months and 1year after surgery. All patients completed the 1year follow-up. There was significant postoperative improvement of NRS, COMI and ODI scores at all postoperative follow-up time points (p<0.05). The radiological assessments of realignment showed a reduction of listhesis from an average of 21.04% (standard deviation [SD] 5.1) preoperatively to 9.14% (SD 4.0) postoperatively (p<0.001). The average blood loss was 492ml. Post-procedure CT scans demonstrated correct implant placement in all but one patient who required a revision of a single pedicle screw. HLIF allows thorough decompression as well as realignment and interbody fusion for patients with DS and may help reduce tissue trauma in comparison to other minimally invasive lumbar fusion techniques. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.03.019
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    ABSTRACT: We report a 56-year-old woman who had an unruptured posterior communicating artery aneurysm. Given the size and location of the aneurysm, as well as her history of smoking and age, she received endovascular treatment with the pipeline embolization device (PED; ev3 Endovascular, Plymouth, MN, USA), complicated by intraoperative rupture (IOR). Flow diversion therapy with the PED has become an increasingly popular method of aneurysmal embolization and parent vessel remodeling. While its on-label approval is for large unruptured aneurysms of the internal carotid artery, success in off-label scenarios has been reported, including ruptured aneurysms. IOR complicates endovascular aneurysm treatment and can cause devastating morbidity or mortality, necessitating acute embolization of the hemorrhaging aneurysm. This patient illustrates the feasibility of treating an IOR with a stand-alone flow diversion device by using PED. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.03.053
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    ABSTRACT: We assess whether serum lactate is a potential biomarker for non-glial cell brain tumors. Rapidly growing tumor cells typically have glycolytic rates up to 200 times higher than those of their normal tissues of origin and produce lactate even in the presence of oxygen. This phenomenon is called the Warburg effect. We recently showed that serum lactate levels can be used as a potential non-invasive biomarker in glial cell brain tumors, which correlates with both tumor grade and the extent of malignancy. In the present study, we found that patients with metastatic brain tumors had significantly higher baseline serum lactate levels compared to patients with meningioma and pituitary tumors. There was a statistically significant association between metastatic brain tumors and elevated serum lactate. We demonstrate that lactate can be used as a non-invasive biomarker to determine malignancy for brain tumors. Further analyses of larger populations will be needed to establish the value of serum lactate in determining the response to therapy or early recurrence. Copyright © 2015. Published by Elsevier Ltd.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.05.009
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    ABSTRACT: We investigated the diversity of central nervous system complications after liver transplantation in terms of clinical manifestations and temporal course. Liver transplantation is a lifesaving option for end stage liver disease patients but post-transplantation neurologic complications can hamper recovery. Between 1 January 2001 and 31 December 2010, patients who had undergone liver transplantation at a single tertiary university hospital were included. We reviewed their medical records and brain imaging data and classified central nervous system complications into four categories including vascular, metabolic, infectious and neoplastic. The onset of central nervous system complications was grouped into five post-transplantation intervals including acute (within 1month), early subacute (1-3months), late subacute (3-12months), chronic (1-3years), and long-term (after 3years). During follow-up, 65 of 791 patients (8.2%) experienced central nervous system complications, with 30 occurring within 1month after transplantation. Vascular etiology was the most common (27 patients; 41.5%), followed by metabolic (23; 35.4%), infectious (nine patients; 13.8%), and neoplastic (six patients). Metabolic encephalopathy with altered consciousness was the most common etiology during the acute period, followed by vascular disorders. An initial focal neurologic deficit was detected in vascular and neoplastic complications, whereas metabolic and infectious etiologies presented with non-focal symptoms. Our study shows that the etiology of central nervous system complications after liver transplantation changes over time, and initial symptoms can help to predict etiology. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.03.006
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    ABSTRACT: We examined the effects of N-acetylcysteine amide (NACA) in the secondary inflammatory response following a novel method of focal penetrating traumatic brain injury (TBI) in rats. N-acetylcysteine (NAC) has limited but well-documented neuroprotective effects after experimental central nervous system ischemia and TBI, but its bioavailability is very low. We tested NACA, a modified form of NAC with higher membrane and blood-brain barrier permeability. Focal penetrating TBI was produced in male Sprague-Dawley rats randomly selected for NACA treatment (n=5) and no treatment (n=5). In addition, four animals were submitted to sham surgery. After 2hours or 24hours the brains were removed, fresh frozen, cut in 14μm coronal sections and subjected to immunohistochemistry, immunofluorescence, Fluoro-Jade and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) analyses. All treated animals were given 300mg/kg NACA intraperitoneally (IP) 2minutes post trauma. The 24hour survival group was given an additional bolus of 300mg/kg IP after 4hours. NACA treatment decreased neuronal degeneration by Fluoro-Jade at 24hours with a mean change of 35.0% (p<0.05) and decreased TUNEL staining indicative of apoptosis at 2hours with a mean change of 38.7% (p<0.05). Manganese superoxide dismutase (MnSOD) increased in the NACA treatment group at 24hours with a mean change of 35.9% (p<0.05). Levels of migrating macrophages and activated microglia (Ox-42/CD11b), nitric oxide-producing inflammatory enzyme iNOS, peroxynitrite marker 3-nitrotyrosine, NFκB translocated to the nuclei, cytochrome C and Bcl-2 were not affected. NACA treatment decreased neuronal degeneration and apoptosis and increased levels of antioxidative enzyme MnSOD. The antiapoptotic effect was likely regulated by pathways other than cytochrome C. Therefore, NACA prevents brain tissue damage after focal penetrating TBI, warranting further studies towards a clinical application. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.03.025
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    ABSTRACT: This study reviews our tertiary hospital experience in an adult population of ependymoma patients. Ependymomas are uncommon tumours of the central nervous system (CNS) and the literature provides little information to guide management and predict prognosis. The prospectively maintained Australian Comprehensive Cancer Outcomes and Research Database of CNS tumours was searched for patients diagnosed with ependymomas at the Royal Melbourne Hospital between January 2008 and December 2013. A total of 39 adult patients with ependymoma were identified, including 13 with spinal myxopapillary ependymoma. The mean age at diagnosis was 44years. All patients underwent surgical resection, 67% of whom had a gross macroscopic resection. Postoperative adjuvant radiotherapy was administered to 11 patients (30%), two (5%) died from progressive disease and seven (18%) developed recurrent disease. Our findings are consistent with the existing literature for patient demographics and the approach to treatment, whilst our clinical outcomes appear more favourable. This study provides the basis for further and necessary research, including determination of the molecular characterisation of these tumours and the identification of prognostic and predictive biomarkers and treatment targets. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Journal of Clinical Neuroscience 06/2015; DOI:10.1016/j.jocn.2015.03.020