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https://www.readbyqxmd.com/read/29355914/intraoperative-imaging-technology-to-maximise-extent-of-resection-for-glioma
#1
REVIEW
Michael D Jenkinson, Damiano Giuseppe Barone, Andrew Bryant, Luke Vale, Helen Bulbeck, Theresa A Lawrie, Michael G Hart, Colin Watts
BACKGROUND: Extent of resection is considered to be a prognostic factor in neuro-oncology. Intraoperative imaging technologies are designed to help achieve this goal. It is not clear whether any of these sometimes very expensive tools (or their combination) should be recommended as standard care for people with brain tumours. We set out to determine if intraoperative imaging technology offers any advantage in terms of extent of resection over standard surgery and if any one technology was more effective than another...
January 22, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29354486/quantitative-comparison-of-cranial-approaches-in-the-anatomy-laboratory-a-neuronavigation-based-research-method
#2
Francesco Doglietto, Jimmy Qiu, Mayoorendra Ravichandiran, Ivan Radovanovic, Francesco Belotti, Anne Agur, Gelareh Zadeh, Marco Maria Fontanella, Walter Kucharczyk, Fred Gentili
AIM: To describe the development and validation of a novel neuronavigation-based method, which allows the quantification of the anatomical features that define an approach, as well as real-time visualization of the surgical pyramid. METHODS: The method was initially developed with commercially-available hardware for coordinate collection (a digitizer and a frameless navigation system) and software for volume rendering; dedicated neuronavigation software (ApproachViewer, part of GTx-UHN) was then developed...
December 26, 2017: World Journal of Methodology
https://www.readbyqxmd.com/read/29338280/variable-skeletal-anatomical-features-of-acromegaly-in-the-skull-and-craniocervical-junction
#3
Maria Piagkou, Othon Manolakos, Theodore Troupis, Nikolaos Lazaridis, Konstantinos Laios, Alexandros Samolis, Konstantinos Natsis
OBJECTIVE: This study adds important information regarding the morphological alterations caused by growth hormone hypersecretion in the skull and craniocervical junction (CCJ). A variably asymmetric skull due to acromegaly coexists with expansion of the paranasal sinuses and multiple Wormian bones. CASE REPORT: A pathologically asymmetric dry skull of a European male, aged 38 years at death, with cranial vault and skull base thickening is described. The extensive paranasal sinus pneumatization caused a generalized thinning of the bony walls...
November 2017: Acta Medica Academica
https://www.readbyqxmd.com/read/29334038/robotic-assisted-and-image-guided-mri-compatible-stereoelectroencephalography
#4
Jeffery A Hall, Hui Ming Khoo
BACKGROUND: Stereoelectroencephalography has been in regular use at the Montreal Neurological Institute since 1972. The technique has been in constant evolution to incorporate advances in materials, imaging, and robotics technology. MRI-compatible electrodes were introduced in 2007 and robotics in 2011. Here we report on the technique, safety, and advantages of our current method of stereoelectroencephalography implantation. METHODS: We retrospectively reviewed all patients who underwent stereoelectroencephalography by the senior author...
January 2018: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/29324910/deep-brain-nucleus-targeting-in-parkinson-s-disease-and-essential-tremor-by-image-guided-surgery-using-neuronavigation-system-with-tractography-and-volume-of-tissue-of-activated-assessment
#5
Amir Nikouei, Pooya Torkian, Tohid Emami Meybodi, Arash Javad Mousavi, Amir Saied Seddighi
OBJECTIVE: Deep Brain Stimulation (DBS) is an effective surgical approach for treatment of Parkinson's disease (PD), dystonia and essential tremor (ET). Traditionally, DBS is performed using frame-based stereotactic technique. Recently, image guided surgery (IGS) using neuronavigation has gained popularity in neurosurgical procedures. We aim to investigate whether DBS using neuronavigation is capable of improving patient's outcome and minimize its complications. SUBJECT AND METHODS: From February 2011 to October 2016, 20 patients with PD and 6 patients with ET were enrolled in the study...
September 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/29322340/the-use-of-a-smartphone-assisted-ventricle-catheter-guide-for-ommaya-reservoir-placement-experience-of-a-retrospective-bi-center-study
#6
Sergey Ozerov, U W Thomale, M Schulz, A Schaumann, A Samarin, E Kumirova
BACKGROUND: For intraventricular chemotherapy (IVC) as part of many oncological treatment protocols, Ommaya reservoir is enabling repeated access to the cerebro-spinal fluid (CSF). The correct placement of the catheter in the ventricle is essential for correct application of drugs, which is enabled by sophisticated techniques such as neuronavigation. OBJECTIVE: In a bi-center retrospective study, we reviewed our experience using a smartphone-assisted ventricle catheter guide as simple solution for correct Ommaya reservoir placement...
January 10, 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29313510/need-for-surgical-treatment-of-epilepsy-and-excision-of-tumors-and-post-traumatic-epileptogenic-lesions-in-kinshasa-rdc
#7
G Ntsambi-Eba, A Beltchika Kalubye, J P Kalala Okito
Surgery is a treatment to consider in epilepsy when the condition is refractory or epileptic events are related to a clearly identified brain abnormality. The tropical climate of the DRC explains the high risk of epilepsy and the potentially large number of refractory cases. The number of patients with epilepsy in Kinshasa is estimated to be at least 120 000, and almost one third may be refractory. Hence, the need to integrate the use of surgery in the treatment of this disease. Most neurosurgical techniques used for treating epilepsy are practiced with a neurosurgical microscope and neuronavigation...
November 1, 2017: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/29310378/isolated-cerebral-aspergillosis-in-an-immunocompetent-woman-on-treatment-for-bacterial-infected-necrotizing-pancreatitis-a-case-report
#8
Shaoyang Zhang, Qinghui Fu, Qi Chen, Ting-Bo Liang
RATIONALE: Cerebral aspergillosis (CA) is a rare manifestation of invasive aspergillosis. It usually affects seriously immunocompromised hosts. Pancreatic bacterial or/and fungal infection is common in patients with severe acute pancreatitis. PATIENT CONCERNS: We report the first case of an immunocompetent woman with infected necrotizing pancreatitis due to multidrug resistant Acinetobacter baumannii who, in the course of treatment, developed isolated CA. DIAGNOSES: Magnetic resonance imaging, rather than computed tomography, revealed latent homolateral sinus disease-the possible source of the Aspergillus infection...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29301040/where-and-when-to-cut-fluorescein-guidance-for-brain-stem-and-spinal-cord-tumor-surgery-technical-note
#9
Eric Suero Molina, Walter Stummer
BACKGROUND: Spinal cord and brain stem lesions require a judicious approach with an optimized trajectory due to a clustering of functions on their surfaces. Intraoperative mapping helps locate function. To confidently locate such lesions, neuronavigation alone lacks the desired accuracy and is of limited use in the spinal cord. OBJECTIVE: To evaluate the clinical value of fluoresceins for initial delineation of such critically located lesions. METHODS: We evaluated fluorescein guidance in the surgical resection of lesions with blood-brain barrier disruption demonstrating contrast enhancement in magnet resonance imaging in the spinal cord and in the brain stem in 3 different patients...
December 29, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29290127/image-guidance-in-transdiscal-fixation-for-high-grade-spondylolisthesis-in-adults-with-correct-spinal-balance
#10
Juan Delgado-Fernández, Paloma Pulido, María Ángeles García-Pallero, Guillermo Blasco, Natalia Frade-Porto, Rafael G Sola
OBJECTIVE Spondylolisthesis is a prevalent spine disease that recent studies estimate could be detected in 9% of the population. High-grade spondylolisthesis (HGS), however, is much less frequent, which makes it difficult to develop a general recommendation for its treatment. Posterior transdiscal fixation was proposed in 1994 for HGS, and the use of spine navigation could make this technique more accessible and reduce the morbidity associated with the procedure. The purpose of this study was to present a case series involving adult patients with HGS and correct spinal alignment who were treated with transdiscal pedicle screw placement guided with neuronavigation and compare the results to those achieved previously without image guidance...
January 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29236921/intermittent-theta-burst-transcranial-magnetic-stimulation-for-autism-spectrum-disorder-an-open-label-pilot-study
#11
Caio Abujadi, Paul E Croarkin, Bianca B Bellini, Helena Brentani, Marco A Marcolin
OBJECTIVE: Theta-burst stimulation (TBS) modulates synaptic plasticity more efficiently than standard repetitive transcranial magnetic stimulation delivery and may be a promising modality for neuropsychiatric disorders such as autism spectrum disorder (ASD). At present there are few effective interventions for prefrontal cortex dysfunction in ASD. We report on an open-label, pilot study of intermittent TBS (iTBS) to target executive function deficits and restricted, repetitive behaviors in male children and adolescents with ASD...
December 11, 2017: Revista Brasileira de Psiquiatria
https://www.readbyqxmd.com/read/29234572/resection-of-a-pediatric-thalamic-juvenile-pilocytic-astrocytoma-with-whole-brain-tractography
#12
Howard L Weiner, Dimitris G Placantonakis
The resection of deep-seated brain tumors has been associated with morbidity due to injury to critical neural structures during the approach. Recent technological advancements in navigation and stereotaxy, surgical planning, brain tractography and minimal-access brain ports present the opportunity to overcome such limitations. Here, we present the case of a pediatric patient with a left thalamic/midbrain juvenile pilocytic astrocytoma (JPA). The tumor displaced the corticospinal fibers posteriorly and resulted in hemiparesis...
October 11, 2017: Curēus
https://www.readbyqxmd.com/read/29232764/brain-biopsy-performed-with-the-ronna-g3-system-a-case-study-on-using-a-novel-robotic-navigation-device-for-stereotactic-neurosurgery
#13
Domagoj Dlaka, Marko Švaco, Darko Chudy, Bojan Jerbić, Bojan Šekoranja, Filip Šuligoj, Josip Vidaković, Fadi Almahariq, Dominik Romić
BACKGROUND: Robotic neuronavigation is becoming an important tool for neurosurgeons. We present a case study of a frameless stereotactic biopsy guided by the RONNA G3 robotic neuronavigation system. METHODS: A 45 year-old patient with a history of vertigo, nausea and vomiting was diagnosed with multiple periventricular lesions. Neurological status was unremarkable. A frameless robotic biopsy of a brain lesion was performed. RESULTS: Three tissue samples were obtained...
December 12, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/29223708/comparison-of-neuroplastic-responses-to-cathodal-transcranial-direct-current-stimulation-and-continuous-theta-burst-stimulation-in-subacute-stroke
#14
Pierre Nicolo, Cécile Magnin, Elena Pedrazzini, Gijs Plomp, Anaïs Mottaz, Armin Schnider, Adrian G Guggisberg
OBJECTIVE: To investigate the effects of cathodal transcranial direct current stimulation (tDCS) and continuous theta burst stimulation (cTBS) on neural network connectivity and motor recovery in individuals with subacute stroke. DESIGN: Double-blinded, randomized, placebo-controlled study. SETTING: Stroke subjects recruited through a university hospital rehabilitation program. PARTICIPANTS: Stroke inpatients (N=41; mean age 65y, range 28-85; mean weeks poststroke 5, range 2-10) with resultant paresis in the upper extremity (mean Fugl-Meyer score 14, range 3-48)...
December 6, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29209585/video-microscope-robotic-arm-assisted-neuronavigation-guided-glioma-resection-and-regional-sampling
#15
Muhammad Waqas, Syed Ather Enam, Fauzan A Hashmi, Fatima Mubarak, Fazal Arain
High-grade gliomas possess internal pathological heterogeneity. Selective sampling of different tumor regions can help in the study of this heterogeneity. In this report, we have described the use of a novel navigation and optical system for the selective regional sampling of a high-grade glioma lesion. A 45-year-old gentleman presented to us with complaints of intermittent frontal headaches for past eight months. On examination, he had subtle pyramidal weakness in left upper and lower extremities. Magnetic resonance imaging (MRI) showed a large contrast-enhancing, space-occupying lesion in the right frontal lobe causing perilesional edema and midline shift...
October 2, 2017: Curēus
https://www.readbyqxmd.com/read/29204038/venous-sinus-stenting-using-transcranial-access-for-the-treatment-of-idiopathic-intracranial-hypertension-in-a-pediatric-patient
#16
Thomas J Buell, Robert M Starke, Dale Ding, Harry R Hixson, Daniel M S Raper, Ching-Jen Chen, Kenneth C Liu
A 4-year-old male with headaches, papilledema, intracranial hypertension, and bilateral transverse sinus (TS) stenosis underwent attempted percutaneous placement of a right TS stent. Stent deployment was not technically feasible due to the stiffness of the stent and tortuosity of the patient's jugular bulb. Therefore, the patient underwent hybrid endovascular stenting of the right TS using neuronavigation and direct access of the TS following a single burr hole craniectomy. Two Express 8 mm × 17 mm balloon-mounted stents were deployed into the right TS, which resulted in obliteration of the preexisting trans-stenosis pressure gradient and decreased intracranial parenchymal pressure as monitored through an intracranial pressure bolt...
October 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/29194849/somatotopic-effects-of-rtms-in-neuropathic-pain-a-comparison-between-stimulation-over-hand-and-face-motor-areas
#17
N Andre-Obadia, M Magnin, E Simon, L Garcia-Larrea
BACKGROUND: The therapeutic influence of somatotopic matching between pain topography and motor cortex stimulation site for neuropathic pain (NP) remains controversial. METHODS: Thirty-two patients suffering from NP involving the upper limb (n = 20) or the face (n = 12) received two high-frequency rTMS neuronavigated sessions targeting hand and face motor cortical areas, versus placebo. The cortical target was defined by anatomical MRI and EMG responses in all patients, completed in 19 of them by functional MRI...
December 1, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/29191526/clinical-application-of-an-open-source-3d-volume-rendering-software-to-neurosurgical-approaches
#18
Bruno Fernandes de Oliveira Santos, Marcos Devanir Silva da Costa, Ricardo Silva Centeno, Sergio Cavalheiro, Manoel Antônio de Paiva Neto, Michael T Lawton, Feres Chaddad-Neto
BACKGROUND: Preoperative recognition of the anatomic individualities of each patient can help to achieve more precise and less invasive approaches. It also may help to anticipate potential complications and intraoperative difficulties. Here we describe the use, accuracy, and precision of a free tool for planning microsurgical approaches using 3-dimensional (3D) reconstructions from magnetic resonance imaging (MRI). METHODS: We used the 3D volume rendering tool of a free open-source software program for 3D reconstruction of images of surgical sites obtained by MRI volumetric acquisition...
November 28, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29188165/diffusion-tensor-imaging-for-ruptured-cerebral-arteriovenous-malformation
#19
Muhammad Waqas, Ayesha Siddiqui, Fatima Mubarak, Syed Ather Enam
Non-ruptured arteriovenous malformations (AVMs) rarely cause tract disruption. Few studies have described how ruptured AVMs influence white matter (WM) tract morphology. We reviewed consecutive AVM cases treated at a tertiary care hospital where diffusion tensor imaging (DTI) tractography was obtained preoperatively. DTI was performed using the Synaptive Plan (Synaptive Medical Inc., Toronto, Canada). Quality control was performed by clinical application specialist. Perinidal fractional anisotropy (FA) value of corticospinal tracts (CST) was obtained...
September 28, 2017: Curēus
https://www.readbyqxmd.com/read/29184713/posterior-atlantoaxial-fusion-using-a-c2-transverse-foramen-penetrating-screw-a-technical-note
#20
Yasuhiro Takeshima, Hideki Shigematsu, Kengo Konishi, Ichiro Nakagawa, Yasushi Motoyama, Hiroyuki Nakase
Background: Although recent development of screw instrumentation techniques for rigid fixation of the atlantoaxial joint has increased surgical options, patients in whom screws of any type cannot be safely placed are sometimes encountered. We present a unique surgical technique for C1-2 transarticular screw placement utilizing a novel trajectory. Methods: A 35-year-old male with a history of Down's syndrome and cognitive dysfunction with hyperkinesis spontaneously developed rapid onset of tetraparesis and gait disturbance...
2017: Surgical Neurology International
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