BACKGROUND AND PURPOSE:Although considerable variability exists as to the overall caliber of radiculomedullary arteries, dominant radiculomedullary arteries such as the artery of Adamkiewicz exist. The existence of a great posterior radiculomedullary artery has attracted little attention and has been a matter of debate. The aim of this anatomic study was to determine the presence or absence of the great posterior radiculomedullary artery.MATERIALS AND METHODS:We performed microsurgical dissection...
Thu Nov 21, 2019 18:27
BACKGROUND AND PURPOSE:Photodynamic therapy is a novel treatment that provides effective local control, but little is known about photodynamic therapy–induced changes on MR imaging. The aim of this study was to assess the utility of DWI and ADC in monitoring the response of malignant gliomas to photodynamic therapy.MATERIALS AND METHODS:Time-dependent changes in DWI and ADC values after photodynamic therapy were analyzed in a group that received photodynamic therapy in comparison with a group that...
Thu Nov 21, 2019 17:47
Multinodular and Vacuolating Neuronal Tumor of the Cerebrum: Does the Name Require Review? [LETTERS]
Thu Nov 21, 2019 17:26
BACKGROUND AND PURPOSE:The complexity and instability of the vortex flow in aneurysms are factors related to the rupture risk of unruptured cerebral aneurysms. We identified aneurysm vortex cores on 4D flow MR imaging and examined the relationship of these factors with the characteristics of cerebral aneurysms.MATERIALS AND METHODS:We subjected 40 aneurysms (37 unruptured, 3 ruptured) to 4D flow MR imaging. We visualized streamlines with velocities below the threshold—that is, a percentage value...
Thu Nov 21, 2019 17:22
BACKGROUND AND PURPOSE:Endovascular embolization can be an effective treatment for cranial dural arteriovenous fistulas. However, a considerable number of dural arteriovenous fistulas still cannot be treated sufficiently. The purpose of this study was to report our single-center experience of endovascular embolization of dural arteriovenous fistulas with Onyx, including the investigation of the influence of angioarchitectural features on the treatment success.MATERIALS AND METHODS:Clinical data,...
Thu Nov 21, 2019 17:22
ABSTRACT Objective Unawareness, or anosognosia, of memory deficits is a challenging manifestation of Alzheimer's disease (AD) that adversely affects a patient's safety and decision‐making. However, there is a lack of consensus regarding the presence, as well as the evolution of altered awareness of memory function across the preclinical and prodromal stages of AD. Here, we aimed to characterize change in awareness of memory abilities and its relationship to beta‐amyloid (Aß) burden in a large...
Thu Nov 21, 2019 12:48
A schematic diagram of the glymphatic flow pathway and its alteration by focused ultrasound that opens the blood‐brain barrier. In the lower part of the figure, gadolinium (small black particles) in the red arterial blood enters the brain and flows through into blue veins. Focused ultrasound (green waves in the upper part of the figure) allows particles to enter the interstitial space where they are carried by bulk flow into perivenular spaces and from which they are cleared by meningeal lymphatic...
Tue Nov 19, 2019 22:02
Electrical stimulation of a brain region producing a micturition response has never previously been described in the human. This report identifies the anterior cingulate gyrus as a brain region important in the micturition response. Stereo electroencephalography was performed in a 38-year-old female with medically refractory epilepsy. The response of the left anterior cingulate from low- to high-frequency brain stimulation was tested. Stimulation within the left anterior cingulate resulted in a reproducible...
Thu Nov 21, 2019 16:45
Abstract Both intrapersonal and interpersonal coordination dynamics have traditionally been investigated using relative phase patterns of in-phase (ϕ = 0°) and/or anti-phase (ϕ = 180°). Numerous investigations have demonstrated that coordination tasks that require other relative phase patterns (e.g., 90°) are difficult or near impossible to perform without extended practice. Recent findings, however, have demonstrated that an individual can produce a wide range of intrapersonal...
Thu Nov 21, 2019 02:00
Publication date: Available online 21 November 2019Source: Journal of Neuroscience MethodsAuthor(s): Shih-Gu Huang, S. Balqis Samdin, Chee-Ming Ting, Hernando Ombao, Moo K. ChungAbstractBackgroundRecent studies have indicated that functional connectivity is dynamic even during rest. A common approach to modeling the dynamic functional connectivity in whole-brain resting-state fMRI is to compute the correlation between anatomical regions via sliding time windows. However, the direct use of the sample...
Thu Nov 21, 2019 18:29
Publication date: Available online 20 November 2019Source: Clinical Neurology and NeurosurgeryAuthor(s): Mei Li, Fengqun Mu, Dongpo Su, Qian Han, Zhenzhong Guo, Tong ChenAbstractObjectiveThis study was performed to explore the efficacy and safety of different surgical interventions in patients with spontaneous supratentorial intracranial hemorrhage (SSICH) and determine which intervention is most suitable for such patients.Patients and MethodsWe searched the PubMed, Medline, OVID, Embase, and Cochrane...
Thu Nov 21, 2019 15:35
Publication date: Available online 20 November 2019Source: Clinical Neurology and NeurosurgeryAuthor(s): Ruiqi Chen, Xin Zan, Anqi Xiao, Rui Guo, Lu Xing, Lu Ma, Chao You, Yi LiuAbstractObjectiveSeizures are common complications following intracranial aneurysms and present a greater risk to pediatric patients than adults. Though the risk factors of seizures in adults with intracranial aneurysms have been well documented, the risk factors in pediatric patients remain unknown. The aim of this study...
Thu Nov 21, 2019 15:35
Publication date: Available online 21 November 2019Source: World NeurosurgeryAuthor(s): Doerthe Keiner
Thu Nov 21, 2019 12:50
Publication date: Available online 21 November 2019Source: World NeurosurgeryAuthor(s): Alice Walton, Jessica Mecklosky, Christopher Carr, Tyler Scullen, Mansour Mathkour, Cassidy Werner, Peter S. AmentaAbstractBackgroundCauda equina syndrome (CES) results from the dysfunction of the lumbar, sacral, and coccygeal rootlets composing the cauda equina. The underlying etiology is most commonly compression secondary to a large herniated lumbosacral disc; however, any pathology affecting the rootlets can...
Thu Nov 21, 2019 12:50
Publication date: Available online 20 November 2019Source: World NeurosurgeryAuthor(s): Naoki WAKUTA, Hiroshi ABE, Kenji FUKUDA, Masani NONAKA, Takashi MORISHITA, Hisatomi ARIMA, Tooru INOUEAbstractObjectiveThe usefulness of endoscopic procedures for chronic subdural hematoma (CSDH) has been described, but the indications in patients of very advanced age have not been analyzed. The aim of this study was to evaluate the feasibility, safety and usefulness of introduction of an endoscopic procedure...
Thu Nov 21, 2019 12:50
Publication date: Available online 20 November 2019Source: World NeurosurgeryAuthor(s): Taotao Lin, Zhenyu Wang, Gang Chen, Wenge LiuAbstractStudy DesignA retrospective study.ObjectiveTo explore (1)whether the cervical sagittal parameters affect the conservative treatment of single-segment cervical spondylotic radiculopathy and (2)whether the conservative treatment of single-segment cervical spondylotic radiculopathy can be predicted by cervical sagittal parameters.Summary of Background DataThe treatment...
Thu Nov 21, 2019 12:50
Publication date: Available online 20 November 2019Source: World NeurosurgeryAuthor(s): Jin Yu, Jibo Zhang, Jieli Li, Jianjian Zhang, Jincao ChenAbstractBackgroundCerebral hyperperfusion syndrome (CHS) following bypass surgery is known as a complication of moyamoya disease (MMD). However, the incidence of CHS has not been accurately reported, and there is no consensus on related risk factors.Objective: To evaluate the incidence and characteristics of CHS in patients with MMD after revascularization...
Thu Nov 21, 2019 12:50
Publication date: Available online 20 November 2019Source: World NeurosurgeryAuthor(s): Joana Monteiro, Bruno Santiago, Rui Manilha, Catarina Viegas, Ana Oliveira, Manuel Cunha e Sá
Thu Nov 21, 2019 12:50
Publication date: Available online 20 November 2019Source: World NeurosurgeryAuthor(s): Farnaz Khalighinejad, Mahsa Majizadeh, Ali Moktari, Reza Rakhshan, Majid Hajizadeh, Majid RezvaniAbstractIntroductionDermoid cysts are benign congenital tumors that develop early in life. These tumors are classified by the presence of all three germ layers. Spinal intradural extramedullary teratoma is a rare disease, which is more common in children under 5 years old than in adults.Patient descriptionA 12-year-old...
Thu Nov 21, 2019 12:50
Publication date: Available online 20 November 2019Source: World NeurosurgeryAuthor(s): Jorge A. Roa, Santiago Ortega-Gutierrez, Mario Martinez-Galdamez, Alberto Maud, Guilherme Dabus, Avery Pazour, Sudeepta Dandapat, Miguel Schüller Arteaga, Jorge Galvan Fernandez, Diego Paez-Granda, Vladimir Kalousek, Roger Barranco Pons, Ashkan Mowla, Gary Duckwiler, Viktor Szeder, Pascal Jabbour, David M. Hasan, Edgar A. SamaniegoAbstractBackgroundUnfavorable anatomy can preclude traditional anterograde endovascular...
Thu Nov 21, 2019 12:50
Publication date: Available online 20 November 2019Source: World NeurosurgeryAuthor(s): Xi Zeng, Qi Zhan, Yuan Gao, Naihao Cui, Minghao Dong, Luqian Feng, Liangzhao Chu, Jian LiuAbstractThe authors reported a case of a 33-year-old female sufferred from the combination of primary gliosarcoma and arteriovenous malformation (AVM) as the first clinical presentation of intracranial hemorrhage. Subsequently, gene examination rarely found BRAF V600E mutation in the surgical specimen. The lesion was not...
Thu Nov 21, 2019 12:50
Publication date: Available online 20 November 2019Source: World NeurosurgeryAuthor(s): Alexander Rosinski, Khalid Odeh, Jeremi Leasure, Dimitriy KondrashovAbstractCervical laminoplasty is a motion-preserving procedure that addresses spinal cord compression and avoids post-laminectomy kyphosis associated with cervical laminectomy. The most common complications include C5 nerve palsy, axial neck pain, hinge non-union, and premature closure. Plating is a relatively newer method of laminoplasty fixation...
Thu Nov 21, 2019 12:50
Publication date: Available online 20 November 2019Source: World NeurosurgeryAuthor(s): Mario Zanaty, Jorge A. Roa, Stavropoula I. Tjoumakaris, Pascal Jabbour, Nikolaos Mouchtouris, Ahmad Sweid, Santiago Ortega-Gutierrez, Daizo Ishii, Kaustubh Limaye, Khaled Asi, Edgar A. Samaniego, David M. HasanAbstractIntroductionWe present our initial experience with the off-label use of the WEB device.MethodsWe performed a retrospective study from 2 institutions of patients with intracranial aneurysms who underwent...
Thu Nov 21, 2019 12:50
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