keyword
MENU ▼
Read by QxMD icon Read
search

neuronavigation

keyword
https://www.readbyqxmd.com/read/28315796/ultrasound-assisted-neuronavigation-guided-removal-of-a-live-worm-in-cerebral-sparganosis
#1
Sunday Nkwerem, Tetsuya Goto, Toshihiro Ogiwara, Yasunaga Yamamoto, Kazuhiro Hongo, Samuel Ohaegbulam
BACKGROUND: Cerebral sparganosis is a rare zoonotic infestation which often mimics glioma and metastatic tumors. CASE DESCRIPTION: A case of 71-year-old man who presented with disturbing dysarthria. Initial neuroimages were suggestive of glioma. The histology was, however, suggestive of inflammatory lesion. Follow-up neuroimages and serology were suggestive of sparganosis. He subsequently had craniotomy with ultrasound-guided aspiration of a live worm. Saline soaked surgicel was used to provide an acoustic window...
March 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28306418/an-mrs-and-pet-guided-biopsy-tool-for-intraoperative-neuronavigational-systems
#2
Matthew Grech-Sollars, Babar Vaqas, Gerard Thompson, Tara Barwick, Lesley Honeyfield, Kevin O'Neill, Adam D Waldman
OBJECTIVE Glioma heterogeneity and the limitations of conventional structural MRI for identifying aggressive tumor components can limit the reliability of stereotactic biopsy and, hence, tumor characterization, which is a hurdle for developing and selecting effective treatment strategies. In vivo MR spectroscopy (MRS) and PET enable noninvasive imaging of cellular metabolism relevant to proliferation and can detect regions of more highly active tumor. Here, the authors integrated presurgical PET and MRS with intraoperative neuronavigation to guide surgical biopsy and tumor sampling of brain gliomas with the aim of improving intraoperative tumor-tissue characterization and imaging biomarker validation...
March 17, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28304232/a-systematic-evaluation-of-intraoperative-white-matter-tract-shift-in-pediatric-epilepsy-surgery-using-high-field-mri-and-probabilistic-high-angular-resolution-diffusion-imaging-tractography
#3
Joseph Yuan-Mou Yang, Richard Beare, Marc L Seal, A Simon Harvey, Vicki A Anderson, Wirginia J Maixner
OBJECTIVE Characterization of intraoperative white matter tract (WMT) shift has the potential to compensate for neuronavigation inaccuracies using preoperative brain imaging. This study aimed to quantify and characterize intraoperative WMT shift from the global hemispheric to the regional tract-based scale and to investigate the impact of intraoperative factors (IOFs). METHODS High angular resolution diffusion imaging (HARDI) diffusion-weighted data were acquired over 5 consecutive perioperative time points (MR1 to MR5) in 16 epilepsy patients (8 male; mean age 9...
March 17, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28284580/preoperative-navigated-transcranial-magnetic-stimulation-and-tractography-in-transparietal-approach-to-the-trigone-of-the-lateral-ventricle
#4
Philipp Hendrix, Sebastian Senger, Christoph J Griessenauer, Andreas Simgen, Stefan Linsler, Joachim Oertel
OBJECTIVE: Eloquent neural structures including white matter tracts surround the trigone of the lateral ventricle. Surgical resection of trigonal tumors via the transparietal approach may cause neurological deterioration depending on the trajectory. METHODS: The authors retrospectively reviewed patients with trigonal tumors that underwent combined preoperative navigated transcranial magnetic stimulation (nTMS) and optic radiation tractography to guide a transparietal approach towards the trigone...
March 8, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28266556/integrative-diffusion-weighted-imaging-and-radiogenomic-network-analysis-of-glioblastoma-multiforme
#5
Dieter Henrik Heiland, Carl Philipp Simon-Gabriel, Theo Demerath, Gerrit Haaker, Dietmar Pfeifer, Elias Kellner, Valerij G Kiselev, Ori Staszewski, Horst Urbach, Astrid Weyerbrock, Irina Mader
In the past, changes of the Apparent Diffusion Coefficient in glioblastoma multiforme have been shown to be related to specific genes and described as being associated with survival. The purpose of this study was to investigate diffusion imaging parameters in combination with genome-wide expression data in order to obtain a comprehensive characterisation of the transcriptomic changes indicated by diffusion imaging parameters. Diffusion-weighted imaging, molecular and clinical data were collected prospectively in 21 patients...
March 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28254457/high-sensitivity-tms-fmri-of-the-human-motor-cortex-using-a-dedicated-multichannel-mr-coil
#6
Lucia I Navarro de Lara, Martin Tik, Michael Woletz, Roberta Frass-Kriegl, Ewald Moser, Elmar Laistler, Christian Windischberger
PURPOSE: To validate a novel setup for concurrent TMS/fMRI in the human motor cortex based on a dedicated, ultra-thin, multichannel receive MR coil positioned between scalp and TMS system providing greatly enhanced sensitivity compared to the standard birdcage coil setting. METHODS: A combined TMS/fMRI design was applied over the primary motor cortex based on 1Hz stimulation with stimulation levels of 80%, 90%, 100%, and 110% of the individual active motor threshold, respectively...
February 22, 2017: NeuroImage
https://www.readbyqxmd.com/read/28252421/evaluating-the-efficacy-of-neuronavigation-in-surgical-treatment-of-glial-tumors
#7
N Tursynov, M Grigolashvili, Sh Kauynbekova, S Grigolashvili
The experience of Medtronic Stealth Station S7 neuronavigation system in surgical treatment of patients with brain tumors is presented in this article. The study included 280 patients in age from 17 to 70 years, 128 women (46.6%), 152 men (53.4%) with tumors of the cerebral hemispheres. Basic topical diagnosis was based on MRI data. Intracerebral tumors were diagnosed in 248 patients, extracerebral in 32. Lesions of the dominant hemisphere of the brain were observed in 146 (52.1%) patients. We operated with navigation technologies...
January 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28236182/endoscopic-management-of-a-low-grade-thalamic-glioma-a-safe-alternative-to-open-microsurgery
#8
Benjamin Brokinkel, Murat Yavuz, Nils Warneke, Angela Brentrup, Katharina Hess, Caroline Bleimüller, Johannes Wölfer, Walter Stummer
BACKGROUND: Despite considerable advances in preoperative and intraoperative imaging and neuronavigation, resection of thalamic gliomas remains challenging. Although both endoscopic biopsy and third ventriculostomy (ETV) for the treatment of secondary hydrocephalus are commonly performed, endoscopic resection of thalamic gliomas has been very sparsely described. METHOD: We report and illustrate the surgical procedure and patient's outcome after full endoscopic resection of a thalamic glioma and to discuss this approach as an alternative to open microsurgery...
February 24, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28223248/endoscopic-intradural-subtemporal-keyhole-approach-with-neuronavigational-assistance-to-the-suprasellar-petroclival-and-ventrolateral-brainstem-regions-an-anatomic-study
#9
Zhemin Ding, Qing Wang, Xiaojie Lu, Xinwei Qian
OBJECTIVE: The purposes of this study were to evaluate the feasibility of a purely endoscopic intradural approach to the suprasellar, petroclival and ventrolateral brainstem regions through a subtemporal keyhole and to assess the value of neuronavigational assistance in the Kawase approach. METHODS: Twenty endoscopic intradural subtemporal keyhole approaches were performed on 10 cadaveric heads. An intradural Kawase approach and a navigation-assisted intradural Kawase approach were then carried out on a random side of each specimen...
February 18, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28202333/easy-methods-to-make-the-neuronavigated-targeting-of-dlpfc-accurate-and-routinely-accessible-for-rtms
#10
Benjamin Pommier, François Vassal, Claire Boutet, Sophie Jeannin, Roland Peyron, Isabelle Faillenot
OBJECTIVES: Dorsolateral prefrontal cortex (DLPFC) is the main stimulation target for rTMS treatment of depression. DLPFC is located in the middle frontal gyrus and corresponds to the lateral part of Brodmann Areas 9 and 46. Current methods to locate the DLPFC are either based on head landmarks that are inaccurate, or based on MRI-neuronavigation. Neuronavigated-methods are based either on standardized stereotactic coordinates translated to the individual patient or on brain landmarks requiring neuroanatomical skills for their identification...
February 2017: Neurophysiologie Clinique, Clinical Neurophysiology
https://www.readbyqxmd.com/read/28186470/image-guidance-based-on-mri-for-spinal-interstitial-laser-thermotherapy-technical-aspects-and-accuracy
#11
Claudio E Tatsui, Clarissa N G Nascimento, Dima Suki, Behrang Amini, Jing Li, Amol J Ghia, Jonathan G Thomas, R Jason Stafford, Laurence D Rhines, Juan P Cata, Ashok J Kumar, Ganesh Rao
OBJECTIVE Image guidance for spinal procedures is based on 3D-fluoroscopy or CT, which provide poor visualization of soft tissues, including the spinal cord. To overcome this limitation, the authors developed a method to register intraoperative MRI (iMRI) of the spine into a neuronavigation system, allowing excellent visualization of the spinal cord. This novel technique improved the accuracy in the deployment of laser interstitial thermal therapy probes for the treatment of metastatic spinal cord compression...
February 10, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28163511/use-of-frameless-stereotactic-neuronavigation-and-o-arm-for-transoral-transpalatal-odontoidectomy-to-treat-a-very-high-basilar-invagination
#12
Skanda Moorthy, Amol Raheja, Deepak Agrawal
Frameless stereotactic neuronavigation system has been in wide use since many years for precise localization of cranial tumors and navigation for spinal instrumentation. We present its usage in the localization of odontoid process in a very high basilar invagination for a transoral transpalatal resection of the same. We discuss the technical aspects of assembly of neuronavigation system, O-arm and Mayfield head frame on Allen spine system to achieve precise and accurate localization of high riding odontoid process through an extremely narrow operative corridor...
December 2016: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28137548/intraoperative-mr-imaging-of-cerebral-oxygen-metabolism-during-resection-of-brain-lesions
#13
REVIEW
Andreas Stadlbauer, Andreas Merkel, Max Zimmermann, Björn Sommer, Michael Buchfelder, Anke Meyer-Bäse, Karl Rössler
OBJECTIVE: Tissue oxygen tension is an important parameter for brain tissue viability and its non-invasive intraoperative monitoring in the whole brain is of highly clinical relevance. The purpose of this study was the introduction of a multiparametric quantitative blood oxygenation dependent (qBOLD) MRI approach for intraoperative examination of oxygen metabolism during the resection of brain lesions. METHODS: Sixteen patients suffering from brain lesions were intraoperatively examined twice (before craniotomy and after gross-total resection) using the qBOLD technique and a 1...
January 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28127723/obstructive-hydrocephalus-caused-by-an-unruptured-arteriovenous-malformation-successfully-treated-by-endoscopic-third-ventriculostomy-after-shunt-dysfunction
#14
Charles Champeaux, Céline Botella, Etienne Lefevre, Bertrand Devaux
The authors report on a patient harbouring an unruptured cortical arteriovenous malformation (AVM), who had presented with obstructive hydrocephalus due to compression of the cerebral aqueduct by a large venous varix. A ventriculoperitoneal (VP) shunt was inserted in emergency. Due to its large volume, the AVM was not referred for treatment and a follow-up policy was chosen. After the second VP shunt dysfunction, endoscopic third ventriculostomy was performed under neuronavigation. The procedure went uneventfully and the patient recovered well...
December 22, 2016: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28120092/transpedicular-approach-to-thoracic-disc-herniaton-guided-by-3d-navigation-system
#15
Gualtiero Innocenzi, Manuela D'Ercole, Giovanni Cardarelli, Simona Bistazzoni, Francesco Ricciardi, Francesco Marzetti, Francesco Sasso
BACKGROUND: The choice of surgical approach for thoracic disc herniation should consider the location on the axial plane and the consistency of the herniated disc. Calcified midline disc herniations are difficult to remove with a transpedicular approach because of limitations due to blind spots; so they are usually treated via a transthoracic approach, although this entails a high risk of thoracopulmonary injuries. METHODS: In this work we present two cases of calcified midline thoracic disc herniations treated with a transpedicular approach, improved by using a three-dimensional (3D) neuronavigation system to verify the extent of removal on the blind side...
2017: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/28120080/functional-magnetic-resonance-imaging-fmri-pre-intraoperative-tractography-in-neurosurgery-the-experience-of-sant-andrea-rome-university-hospital
#16
Giancarlo D'Andrea, Giuseppe Trillo', Veronica Picotti, Antonino Raco
BACKGROUND: The goal of neurosurgery for cerebral intraparenchymal neoplasms of the eloquent areas is maximal resection with the preservation of normal functions, and minimizing operative risk and postoperative morbidity. Currently, modern technological advances in neuroradiological tools, neuronavigation, and intraoperative magnetic resonance imaging (MRI) have produced great improvements in postoperative morbidity after the surgery of cerebral eloquent areas. The integration of preoperative functional MRI (fMRI), intraoperative MRI (volumetric and diffusion tensor imaging [DTI]), and neuronavigation, defined as "functional neuronavigation" has improved the intraoperative detection of the eloquent areas...
2017: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/28115854/multivoxel-magnetic-resonance-spectroscopy-identifies-enriched-foci-of-cancer-stem-like-cells-in-high-grade-gliomas
#17
Tao He, Tianming Qiu, Xiaodong Wang, Hongxing Gui, Xilong Wang, Qikuan Hu, Hechun Xia, Gaoyang Qi, Jinsong Wu, Hui Ma
OBJECTIVE: This study investigated the correlation between choline/creatine (Cho/Cr) ratios determined by multivoxel proton magnetic resonance spectroscopy ((1)H-MRS) and the distribution of cancer stem-like cells (CSLCs) in high-grade gliomas. PATIENTS AND METHODS: Sixteen patients with high-grade gliomas were recruited and underwent (1)H-MRS examination before surgery to identify distinct tumor regions with variable Cho/Cr ratios. Using intraoperative neuronavigation, tumor tissues were accurately sampled from regions with high and low Cho/Cr ratios within each tumor...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28110313/framework-for-2d-3d-image-fusion-of-infrared-thermography-with-preoperative-mri
#18
Nico Hoffmann, Florian Weidner, Peter Urban, Tobias Meyer, Christian Schnabel, Yordan Radev, Gabriele Schackert, Uwe Petersohn, Edmund Koch, Stefan Gumhold, Gerald Steiner, Matthias Kirsch
Multimodal medical image fusion combines information of one or more images in order to improve the diagnostic value. While previous applications mainly focus on merging images from computed tomography, magnetic resonance imaging (MRI), ultrasonic and single-photon emission computed tomography, we propose a novel approach for the registration and fusion of preoperative 3D MRI with intraoperative 2D infrared thermography. Image-guided neurosurgeries are based on neuronavigation systems, which further allow us track the position and orientation of arbitrary cameras...
January 23, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28086851/efficacy-of-intermittent-theta-burst-stimulation-itbs-and-10-hz-high-frequency-repetitive-transcranial-magnetic-stimulation-rtms-in-treatment-resistant-unipolar-depression-study-protocol-for-a-randomised-controlled-trial
#19
Samuel Bulteau, Veronique Sébille, Guillemette Fayet, Veronique Thomas-Ollivier, Thibault Deschamps, Annabelle Bonnin-Rivalland, Edouard Laforgue, Anne Pichot, Pierre Valrivière, Elisabeth Auffray-Calvier, June Fortin, Yann Péréon, Jean-Marie Vanelle, Anne Sauvaget
BACKGROUND: The treatment of depression remains a challenge since at least 40% of patients do not respond to initial antidepressant therapy and 20% present chronic symptoms (more than 2 years despite standard treatment administered correctly). Repetitive transcranial magnetic stimulation (rTMS) is an effective adjuvant therapy but still not ideal. Intermittent Theta Burst Stimulation (iTBS), which has only been used recently in clinical practice, could have a faster and more intense effect compared to conventional protocols, including 10-Hz high-frequency rTMS (HF-rTMS)...
January 13, 2017: Trials
https://www.readbyqxmd.com/read/28068754/intraventricular-cavernous-malformation-review-of-the-literature-and-report-of-three-cases-with-neuroendoscopic-resection
#20
Masoud Shirvani, Alireza Hajimirzabeigi
Intraventricular cavernomas (IVCs) are extremely infrequent and only occur in 2.8 to 10% of patients with cerebral cavernomas. We describe three IVC cases and briefly review previously documented IVC cases in PubMed. Among 136 IVC cases, the mean age of the patients was 36.5 years; the male-to-female ratio was 0.8. The most frequent location was the lateral ventricle (52.6%), and most of the clinical symptoms (74%) were related to mass effects on adjacent brain tissues. Intraventricular hemorrhage occurred in 22...
January 9, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
keyword
keyword
46745
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"