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https://www.readbyqxmd.com/read/28645590/endoscopic-supracerebellar-transtentorial-approach-to-the-atrium-of-the-lateral-ventricle-preliminary-surgical-and-optical-considerations
#1
Tao Xie, Linjun Zhou, Xiaobiao Zhang, Wei Sun, Hailin Ding, Tengfei Liu, Ye Gu, Chongjing Sun, Fan Hu, Wei Zhu
OBJECTIVE: To report the operative techniques of the endoscopic supracerebellar transtentorial approach (ESTA) to the atrium of the lateral ventricle, especially focusing on the role of the endoscope and analyzing optically related issues. METHODS: A retrospective data review was performed on five patients with lesions in the atrium of the lateral ventricle undergoing the ESTA. The patients were positioned in the three-quarters prone position, and a paramidline linear incision was used...
June 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28631869/lateralized-hippocampal-volume-increase-following-high-frequency-left-prefrontal-repetitive-transcranial-magnetic-stimulation-in-patients-with-major-depression
#2
Shunsuke Hayasaka, Motoaki Nakamura, Yoshihiro Noda, Takuji Izuno, Takashi Saeki, Hideo Iwanari, Yoshio Hirayasu
AIM: Repetitive transcranial magnetic stimulation (rTMS) has been applied as a treatment for patients with treatment-resistant depression in recent years, and a large body of evidence has demonstrated its therapeutic efficacy through stimulating neuronal plasticity. The aim of this study was to investigate structural alterations in the hippocampus (HIPP) and amygdala (AM) following conventional rTMS in patients with depression. METHODS: Twenty-eight patients with depression underwent 10 daily 20-Hz left prefrontal rTMS over 2 weeks...
June 20, 2017: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/28626100/-neuronavigator-assisted-microsurgical-resection-of-glioma-located-in-cerebral-functional-areas
#3
Guohui Su, Zhixiong Liu, Lei Huo, Chuntao Li, Mingyu Zhang
To evaluate value of neuronavigator-assisted microsurgery of glioma located in cerebral functional areas.
 Methods: Patients with glioma located in cerebral functional areas were underwent operation in Xiangya Hospital. Of 64 patients, 34 patients were performed neuronavigator-assisted microsurgery, and 30 were underwent routine surgical operation.
 Results: The neuronavigator-assisted microsurgery group showed high complete resection rate with low neurological deficit and cerebral edema compared with the routine surgical group (P<0...
May 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28621629/endoscopic-endonasal-odontoid-resection-with-real-time-intraoperative-image-guided-computed-tomography-report-of-4-cases
#4
Harminder Singh, Sarang Rote, Ajit Jada, Evan D Bander, Gustavo J Almodovar-Mercado, Walid I Essayed, Roger Härtl, Vijay K Anand, Theodore H Schwartz, Jeffrey P Greenfield
The authors present 4 cases in which they used intraoperative CT (iCT) scanning to provide real-time image guidance during endonasal odontoid resection. While intraoperative CT has previously been used as a confirmatory test after resection, to the authors' knowledge this is the first time it has been used to provide real-time image guidance during endonasal odontoid resection. The operating room setup, as well as the advantages and pitfalls of this approach, are discussed. A mobile intraoperative CT scanner was used in conjunction with real-time craniospinal neuronavigation in 4 patients who underwent endoscopic endonasal odontoidectomy for basilar invagination...
June 16, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28621626/a-multimodal-concept-for-invasive-diagnostics-and-surgery-based-on-neuronavigated-voxel-based-morphometric-mri-postprocessing-data-in-previously-nonlesional-epilepsy
#5
Daniel Delev, Carlos M Quesada, Alexander Grote, Jan P Boström, Christian Elger, Hartmut Vatter, Rainer Surges
OBJECTIVE Diagnosis and surgical treatment of refractory and apparent nonlesional focal epilepsy is challenging. Morphometric MRI voxel-based and other postprocessing methods can help to localize the epileptogenic zone and thereby support the planning of further invasive electroencephalography (EEG) diagnostics, and maybe resective epilepsy surgery. METHODS The authors developed an algorithm to implement regions of interest (ROI), based on postprocessed MRI data, into a neuronavigation tool. This was followed by stereotactic ROI-guided implantation of depth electrodes and ROI-navigated resective surgery...
June 16, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28616385/neurophysiological-evidence-of-preserved-connectivity-in-tuber-tissue
#6
H L Kaye, J M Peters, R Gersner, M Chamberland, A Sansevere, A Rotenberg
We present a case of preserved corticospinal connectivity in a cortical tuber, in a 10 year-old boy with intractable epilepsy and tuberous sclerosis complex (TSC). The patient had multiple subcortical tubers, one of which was located in the right central sulcus. In preparation for epilepsy surgery, motor mapping, by neuronavigated transcranial magnetic stimulation (nTMS) coupled with surface electromyography (EMG) was performed to locate the primary motor cortical areas. The resulting functional motor map revealed expected corticospinal connectivity in the left precentral gyrus...
2017: Epilepsy & Behavior Case Reports
https://www.readbyqxmd.com/read/28614531/alternative-option-for-osteogenesis-imperfecta-and-trigeminal-neuralgia
#7
Leonardo Gilmone Ruschel, Guilherme José Agnoletto, Sonival Cândido Hunhevicz, Daniel Benzecry de Almeida, Walter Oleschko Arruda
Osteogenesis imperfecta (OI) is a bone disorder that can lead to skull base deformities such as basilar invagination, which can cause compression of cranial nerves, including the trigeminal nerve. Trigeminal neuralgia in such cases remains a challenge, given distorted anatomy and deformities. We present an alternative option, consisting in cannulation of the foramen ovale and classical percutaneous treatment. Percutaneous balloon microcompression was performed in a 28 year-old woman with OI and severe trigeminal neuralgia using computed tomography (CT) and radiographic-guided cannulation of the Gasserian ganglion without neuronavigation or stereotactic devices...
April 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28612077/neuronavigated-high-frequency-repetitive-transcranial-magnetic-stimulation-for-chronic-post-stroke-dysphagia-a-randomized-controlled-study
#8
Ivy K Y Cheng, Karen M K Chan, Chun-Sing Wong, Leonard S W Li, Karen M Y Chiu, Raymond T F Cheung, Edwin M L Yiu
OBJECTIVE: There are potential benefits of repetitive transcranial magnetic stimulation (rTMS) in improving swallowing functions after stroke; however, few studies have been performed in the chronic stroke population. This study aims to distil the key effects of rTMS on swallowing functions and swallowing-related quality of life. METHODS: Twenty-two participants with chronic post-stroke dysphagia were randomly assigned into active or sham rTMS groups. Seven participants withdrew from the study, thus data from 15 participants (mean age 64...
May 30, 2017: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28606580/comparison-of-operative-time-with-conventional-fluoroscopy-versus-spinal-neuronavigation-in-instrumented-spinal-tumor-surgery
#9
James A Miller, Andrew J Fabiano
OBJECTIVE: Spinal neuronavigation improves accuracy of pedicle screw placement but may increase operative time, and its use in oncological operations remains relatively unstudied. We compared the use of 2-dimensional (2D) fluoroscopy and 3-dimensional (3D) spinal neuronavigation relative to operative time in instrumented oncology procedures. METHODS: Consecutive instrumented oncologic spinal operations for multiple myeloma or metastatic disease performed between 2012 and 2014 were retrospectively reviewed...
June 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28602884/autostereoscopic-3d-neuronavigation-to-the-sella-technical-note
#10
A Nimer Amr, Jens Conrad, Sven Kantelhardt, Alf Giese
BACKGROUND: A drawback of conventional neuronavigation is the necessity of focusing on 2D-images in three planes at the same time to determine one's position in the operation field. A solution would be to merge the images into a single 3D-image that mirrors the actual anatomy. This solution has hitherto been hindered by technical limitations. The introduction of holographic-glassless 3D-monitors paved the way to 3D-navigation. OBJECTIVE: We present our experience with 3D-neuronavigation as exemplified by navigation to and within the sella...
June 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28591887/accuracy-of-high-field-intraoperative-mri-in-the-detectability-of-residual-tumor-in-glioma-grade-iv-resections
#11
Volker Heßelmann, Ann-Kathrin Mager, Claudia Goetz, Oliver Detsch, Hannah-Katharina Theisgen, Michael Friese, Wolfram Schwindt, Joachim Gottschalk, Paul Kremer
Objective To assess the sensitivity/specificity of tumor detection by T1 contrast enhancement in intraoperative MRI (ioMRI) in comparison to histopathological assessment as the gold standard in patients receiving surgical resection of grade IV glioblastoma. Materials and Methods 68 patients with a primary or a recurrent glioblastoma scheduled for surgery including fluorescence guidance and neuronavigation were included (mean age: 59 years, 26 female, 42 male patients). The ioMRI after the first resection included transverse FLAIR, DWI, T2-FFE and T1 - 3 d FFE +/- GD-DPTA...
June 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28585674/real-time-video-streaming-to-surgical-loupe-mounted-head-up-display-for-navigated-meningioma-resection
#12
Roberto Diaz, Jang Yoon, Robert Chen, Alfredo Quinones-Hinojosa, Robert Wharen, Ricardo Komotar
AIM: Wearable technology interfaces with normal human movement and function, thereby enabling more efficient and adaptable use.We developed a wearable display system for use with intra-operative neuronavigation for brain tumor surgery. MATERIAL AND METHODS: The Google glass head-up display system was adapted to surgical loupes with a video-streaming integrated hardware and software device for display of the Stealth S7 navigation screen. Phantom trials of surface ventriculostomy were performed...
April 30, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28578115/2d-hd-versus-3d-endoscopy-in-endonasal-skull-base-surgery-a-comparative-pre-clinical-study
#13
Vittorio Rampinelli, Francesco Doglietto, Davide Mattavelli, Jimmy Qiu, Elena Raffetti, Alberto Schreiber, Andrea Bolzoni Villaret, Walter Kucharczyk, Francesco Donato, Marco Maria Fontanella, Piero Nicolai
BACKGROUND: Three-dimensional (3D) endoscopy has been recently introduced in endonasal skull base surgery. Only a relatively limited number of studies have compared it to two-dimensional, high definition (2D-HD) technology. OBJECTIVE: To analyze, in a preclinical setting for endonasal endoscopic surgery, surgical maneuverability comparing 2D-HD and 3D endoscopy. METHODS: A group of 68 volunteers, both novice and experienced surgeons, were asked to perform two tasks, namely simulating grasping and dissection surgical maneuvers, in a model of the nasal cavities...
May 31, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28576710/evaluation-of-screw-placement-accuracy-in-circumferential-lumbar-arthrodesis-utilizing-robotic-assistance-and-intra-operative-flat-panel-ct
#14
Louis Chenin, Cyrille Capel, Anthony Fichten, Johann Peltier, Michel Lefranc
BACKGROUND: Neuronavigation has become a common means of placing pedicle screws in vertebral arthrodesis, since it reduces the incidence of complications related to poor screw positioning. OBJECTIVE: The objective of the present study was to evaluate the accuracy of pedicle screw placement during lumbar arthrodesis performed with the new ROSA® Spine robot and intraoperative flat-panel CT (fpCT) guidance. METHODS: We performed a descriptive, observational, retrospective, single-center study of patients having undergone transforaminal lumbar interbody fusion (TLIF) for degenerative pathologies using the ROSA® Spine robot and intraoperative fpCT guidance...
May 30, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28555269/placement-accuracy-of-external-ventricular-drain-when-comparing-freehand-insertion-to-neuronavigation-guidance-in-severe-traumatic-brain-injury
#15
Ahmed AlAzri, Kelvin Mok, Jeffrey Chankowsky, Mohammad Mullah, Judith Marcoux
BACKGROUND: External ventricular drain (EVD) placement is a frequently performed neurosurgical procedure. Inaccuracies in drain positioning and the need for multiple passes using the classic freehand insertion technique is well reported in the literature, especially in the traumatic brain injury (TBI) population. The purpose of this study was to evaluate if electromagnetic neuronavigation guidance for EVD insertion improves placement accuracy and minimizes the number of passes in severe TBI patients...
May 29, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28536838/outcomes-of-ventriculoperitoneal-shunt-insertion-in-the-management-of-idiopathic-intracranial-hypertension-in-children
#16
J Heyman, Ronak Ved, A Amato-Watkins, I Bhatti, J Te Water Naude, F Gibbon, P Leach
PURPOSE: The ventriculoperitoneal (VP) shunt has become the procedure of choice for treatment of idiopathic intracranial hypertension (IIH). We aimed to assess the efficacy of frameless stereotactic placement of VP shunts for the management of medically resistant IIH in children and to assess the role of gender and obesity in the aetiology of the condition. METHODS: This is a retrospective analysis of the case notes of 10 patients treated surgically at the University Hospital of Wales in Cardiff, from May 2006 to September 2012...
May 23, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28524449/technical-feasibility-and-safety-of-image-guided-parieto-occipital-ventricular-catheter-placement-with-the-assistance-of-a-wearable-head-up-display
#17
Jang W Yoon, Robert E Chen, Karim ReFaey, Roberto J Diaz, Ronald Reimer, Ricardo J Komotar, Alfredo Quinones-Hinojosa, Benjamin L Brown, Robert E Wharen
BACKGROUND: Wearable technology is growing in popularity as a result of its ability to interface with normal human movement and function. METHODS: Using proprietary hardware and software, neuronavigation images were captured and transferred wirelessly via a password-encrypted network to the head-up display. The operating surgeon wore a loupe-mounted wearable head-up display during image-guided parieto-occipital ventriculoperitoneal shunt placement in two patients...
May 19, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/28524128/-placement-of-a-ventricular-catheter-into-narrow-lateral-ventricles-popular-navigation
#18
S S Ozerov, A E Samarin, A V Mel'nikov, E V Kumirova
Placement of a ventricular catheter is the most common and easiest procedure in neurosurgery. Usually, the procedure is performed using anatomical landmarks. However, despite the apparent ease of this manipulation, its results are not always satisfactory. According to the literature data, the rate of improperly placed ventricular catheters amounts to 10-40%, which is directly correlated with the risk of shunt dysfunction. The use of special equipment, such as ultrasound scanners, endoscopes, stereotactic devices, and neuronavigation systems, significantly increases success of surgery...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28521036/a-novel-approach-of-navigation-assisted-flexible-neuroendoscopy
#19
Jaime G Torres-Corzo, Leonardo Rangel-Castilla, Mario Alberto Islas-Aguilar, Roberto Rodríguez-Della Vecchia
BACKGROUND AND IMPORTANCE: Neuronavigation-assisted endoscopy is commonly used for skull base and intraventricular surgery. Flexible neuroendoscopy offers certain advantages over rigid endoscopy; however, a major disadvantage of the flexible endoscope has been easy disorientation in the flexed position. Neuronavigation-assisted flexible neuroendoscopy was not available until now. This is the first report of the use of navigation-assisted flexible neuroendoscopy in a patient with hydrocephalus...
May 18, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28512039/fluorescein-guided-surgery-for-high-grade-glioma-resection-an-intraoperative-contrast-enhancer
#20
Giuseppe Catapano, Francesco Giovanni Sgulò, Vincenzo Seneca, Giovanni Lepore, Laura Columbano, Giuseppe di Nuzzo
BACKGROUND: Fluorescein sodium salt is widely used in medicine as fluorescein isothiocyanate and commonly named fluorescein (FL). This fluorophore has been used as a fluorescent tracer for many applications, especially in ophthalmic surgery. The initial use in neuro-oncologic field occurred in 1948 in order to control tumor resection margins. After a transient disuse, it has recently had a second spring with the development of dedicated filters for operating microscope, although it is still under evaluation in clinical use...
May 13, 2017: World Neurosurgery
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