New Techniques for Brain Disorders Marc Lévêque
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Surgical Management of Parkinson's Disease
SEMINAR PAPER DTM Chan Surgical management of Parkinson’s VCT Mok WS Poon disease: a critical review KN Hung XL Zhu ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ !"#$%&'()*+, Parkinson’s disease is a progressive disabling movement disorder that is characterised by three cardinal symptoms: resting tremor, rigidity, and bradykinesia. Before the availability of effective medical treatment with levodopa and stereotactic neurosurgery, the objective of surgical management was to alleviate symptoms such as tremor at the expense of motor deficits. Levodopa was the first effective medical treatment for Parkinson’s disease, and surgical treatment such as stereotactic thalamo- tomy became obsolete. After one decade of levodopa therapy, however, drug-induced dyskinesia had become a source of additional disability not amenable to medical treatment. Renewed interest in stereotactic functional neurosurgery to manage Parkinson’s disease has been seen since the 1980s. Local experience of deep-brain stimulation is presented and discussed in this paper. Deep-brain stimulation of the subthalamic nucleus is an effective treatment for advanced Parkinson’s disease, although evidence from randomised control trials is lacking. !"#$%&'()*+,-!./01$23456789:; Key words: !"#$%&'()*+,-./01'23456789:;< Electric stimulation; !"#$%&'()*+,-./01(23#45+6789: Globus pallidus/surgery; Parkinson disease; !"#$%&'()*+,-./012345678'9:;< Stereotactic techniques; !"#$%&'()*%+,-./0123)456789:; Subthalamic nuclei/surgery; !"#$%&'()*+,-.1980 !"#$%&'()* Thalamus/surgery !"#$%&'()*+,-./0123456789:;<= -
Decompressive Craniectomy Following Severe Traumatic Brain Injury with an Initial Glasgow Coma Scale Score of 3 Or 4
Case Report Clinics in Surgery Published: 03 Jul, 2019 Decompressive Craniectomy Following Severe Traumatic Brain Injury with an Initial Glasgow Coma Scale Score of 3 or 4 Afif AFIF* Department of Neurosurgery and Anatomy, Pierre Wertheimer Hospital, France Abstract Background: Decompressive craniectomy is a surgical management option for severe Traumatic Brain Injury (TBI). However, few studies have followed patients with TBI who have a Glasgow Coma Scale (GCS) score of 3 or 4 (out of 15). Decompressive craniectomy has been avoided in such patients owing to poor outcomes and poor functional recoveries in previous cases of treatment using this method. Clinical Presentation: Two patients are presented in our case series. The first suffered severe TBI following an aggression, with a GCS score of 3 and bilaterally dilated unreactive pupils. Brains CT scan showed right frontal fracture, bifrontal hematoma contusion, a fronto-temporo-parietal acute Subdural Hematoma (SDH) with a thickness of 14 mm on the right side, traumatic subarachnoid hemorrhage, with 20 mm of midline shift to the left side, and diffuses brain edema. The second presented with severe TBI following an automobile accident, with a GCS score of 4 and iso- reactive pupils. A brain CT scan showed bilateral fronto-temporal fracture, diffuse brain hematoma contusion, traumatic subarachnoid hemorrhage, right Extradural Hematoma (EDH) and bilateral fronto-temporo-parietal acute SDH that was more pronounced on the right side. Conclusion: Follow-up after the operations showed an Extended Glasgow Outcome Scale (EGOS) score of 8 and a very good functional recovery for both patients. Our case series suggests that in patients with severe TBI and a GCS score of 3 or 4; decompressive craniectomy can be performed OPEN ACCESS with good long-term neurological outcomes. -
Introduction to Neuroimaging
Introduction to Neuroimaging Janaina Mourao-Miranda • Neuroimaging techniques have changed the way neuroscientists address questions about functional anatomy, especially in relation to behavior and clinical disorders. • Neuroimaging includes the use of various techniques to either directly or indirectly image the structure or function of the brain. • Structural neuroimaging deals with the structure of the brain (e.g. shows contrast between different tissues: cerebrospinal fluid, grey matter, white matter). • Functional neuroimaging is used to indirectly measure brain functions (e.g. neural activity) • Example of Neuroimaging techniques: – Computed Tomography (CT), – Positron Emission Tomography (PET), – Single Photon Emission Computed Tomography (SPECT), – Magnetic Resonance Imaging (MRI), – Functional Magnetic Resonance Imaging (fMRI). • Among other imaging modalities MRI/fMRI became largely used due to its low invasiveness, lack of radiation exposure, and relatively wide availability. • Magnetic Resonance Imaging (MRI) was developed by researchers including Peter Mansfield and Paul Lauterbur, who were awarded the Nobel Prize for Physiology or Medicine in 2003. • MRI uses magnetic fields and radio waves to produce high quality 2D or 3D images of brain structures/functions without use of ionizing radiation (X- rays) or radioactive tracers. • By selecting specific MRI sequence parameters different MR signal can be obtained from different tissue types (structural MRI) or from metabolic changes (functional MRI). MRI/fMRI scanner MRI vs. fMRI -
Awake Craniotomy for Left Insular Low-Grade Glioma Removal on a Patient with Learning Disabilities
THIEME Techniques in Neurosurgery 41 Awake Craniotomy for Left Insular Low-Grade Glioma Removal on a Patient with Learning Disabilities Andrej Vranic1 Blaz Koritnik2 Jasmina Markovic-Bozic3 1 Department of Neurosurgery, Fondation Ophtalmologique A. de Address for correspondence Andrej Vranic, MD, PhD, Department of Rothschild, Paris, France Neurosurgery, Fondation Ophtalmologique Adolphe de Rothschild, 2 Department of Neurophysiology, University Medical Centre, 29, Rue Manin, 75019 Paris, France (e-mail: [email protected]). Ljubljana, Slovenia 3 Department of Anesthesiology, University Medical Centre, Ljubljana, Slovenia Indian J Neurosurg 2017;6:41–43. Abstract Introduction Low-grade gliomas (LGG) are slow-growing primary brain tumors in adults, with high tropism for eloquent areas. Standard approach in treatment of LGG is awake craniotomy with intraoperative cortical mapping — a method which is usually used on adult and fully cooperative patients. Case Report We present the case of a patient with learning disabilities (PLD) who Keywords was operated for left insular LGG awake craniotomy, and intraoperative cortical ► low-grade glioma mapping were performed and the tumor was gross totally removed. ► awake craniotomy Conclusion Awake surgery for left insular LGG removal is challenging; however, it ► learning disability can be performed safely and successfully on PLD. Introduction been shown that awake brain tumor surgery can be safely performed with extremely low complication and failure rates Low-grade gliomas (LGG) are slow-growing primary brain regardless of American Society of Anesthesiologists tumors in adults. For many decades, these tumors were classification, body mass index, smoking status, psychiatric or considered inoperable because of their high tropism for emotional history, seizure frequency and duration, tumor site, eloquent areas and white matter pathways. -
Current Directions in Social Cognitive Neuroscience Kevin N Ochsner
Current directions in social cognitive neuroscience Kevin N Ochsner Social cognitive neuroscience is an emerging discipline that science (SCN) as a distinct interdisciplinary field that seeks to explain the psychological and neural bases of seeks to understand socioemotional phenomena in terms socioemotional experience and behavior. Although research in of relationships among the social (specifying socioemo- some areas is already well developed (e.g. perception of tionally relevant cues, contexts, experiences, and beha- nonverbal social cues) investigation in other areas has only viors), cognitive (information processing mechanisms), just begun (e.g. social interaction). Current studies are and neural (brain bases) levels of analysis. elucidating; the role of the amygdala in a variety of evaluative and social judgment processes, the role of medial prefrontal Here, I provide a brief synthetic review of selected recent cortex in mental state attribution, how frontally mediated findings organized around types or stages of processing controlled processes can regulate perception and experience, rather than topic domains for the following three reasons. and the way in which these and other systems are recruited First, a process orientation might help to highlight emerg- during social interaction. Future progress will depend upon ing functional principles that cut across topics. Second, the development of programmatic lines of research that SCN encompasses numerous topics, and for many of integrate contemporary social cognitive research with them -
Understanding Icd-10-Cm and Icd-10-Pcs 3Rd Edition Download Free
UNDERSTANDING ICD-10-CM AND ICD-10-PCS 3RD EDITION DOWNLOAD FREE Mary Jo Bowie | 9781305446410 | | | | | International Classification of Diseases, (ICD-10-CM/PCS) Transition - Background Palmer B. Manual placenta removal. A: Understanding ICD-10-CM and ICD-10-PCS 3rd edition International Classification of Diseases ICD is a common framework and language to report, compile, use and compare health information. Psychoanalysis Adlerian therapy Analytical therapy Mentalization-based treatment Transference focused psychotherapy. Hysteroscopy Vacuum aspiration. Every code begins with an alpha character, which is indicative of the chapter to which the code is classified. Search Compliance Understanding BC, resilience standards and how to comply Follow these nine steps to first identify relevant business continuity and resilience standards and, second, launch a successful While many coders use ICD lookup software to help them, referring to an ICD code book is invaluable to build an understanding of the classification system. Pregnancy test Leopold's maneuvers Prenatal testing. Endoscopy : Colonoscopy Anoscopy Capsule endoscopy Enteroscopy Proctoscopy Sigmoidoscopy Abdominal ultrasonography Defecography Double-contrast barium enema Endoanal ultrasound Enteroclysis Lower gastrointestinal series Small-bowel follow-through Transrectal ultrasonography Virtual colonoscopy. Psychosurgery Lobotomy Bilateral cingulotomy Multiple subpial transection Hemispherectomy Corpus callosotomy Anterior temporal lobectomy. While codes in sections are structured similarly to the Medical and Surgical section, there are a few exceptions. Send Feedback Do you have Understanding ICD-10-CM and ICD-10-PCS 3rd edition on the new website? Help Learn to edit Community portal Recent changes Upload file. D Radiation oncology. Stem cell transplantation Hematopoietic stem cell transplantation. The primary distinctions are:. Palmer Joseph C. -
Surgical Neurology International James I
OPEN ACCESS Editor-in-Chief: Surgical Neurology International James I. Ausman, MD, PhD For entire Editorial Board visit : University of California, Los http://www.surgicalneurologyint.com Angeles, CA, USA Historical Review Violence, mental illness, and the brain – A brief history of psychosurgery: Part 1 – From trephination to lobotomy Miguel A. Faria, Jr. Clinical Professor of Neurosurgery (ret.) and Adjunct Professor of Medical History (ret.), Mercer University School of Medicine; President, www.haciendapub.com, Macon, Georgia, USA E‑mail: *Miguel A. Faria, Jr. ‑ [email protected] *Corresponding author Received: 11 March 13 Accepted: 13 March 13 Published: 05 April 13 This article may be cited as: Faria MA. Violence, mental illness, and the brain - A brief history of psychosurgery: Part 1 - From trephination to lobotomy. Surg Neurol Int 2013;4:49. Available FREE in open access from: http://www.surgicalneurologyint.com/text.asp?2013/4/1/49/110146 Copyright: © 2013 Faria MA. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Abstract Psychosurgery was developed early in human prehistory (trephination) as a need perhaps to alter aberrant behavior and treat mental illness. The “American Crowbar Case" provided an impetus to study the brain and human behavior. The frontal lobe Access this article syndrome was avidly studied. Frontal lobotomy was developed in the 1930s for online the treatment of mental illness and to solve the pressing problem of overcrowding Website: in mental institutions in an era when no other forms of effective treatment were www.surgicalneurologyint.com DOI: available. -
Pallidotomy and Thalamotomy
Pallidotomy and Thalamotomy Vancouver General Hospital 899 West 12th Avenue Vancouver BC V5Z 1M9 Tel: 604-875-4111 This booklet will provide information about the following Preparing for Surgey surgical procedures: Pallidotomy and Thalamotomy. Before Admission to Hospital What is a Pallidotomy? 1) Anticoagulants and other medications that thin your A pallidotomy is an operation for Parkinson’s disease blood such as Aspirin, Coumadin (Warfarin), Lovenox where a small lesion is made in the globus pallidum (an (Enoxaparin), Ticlid (Ticlopidine), Plavix (Clopidogrel) area of the brain involved with motion control). The lesion and Ginkgo must be discontinued 2 weeks before your is made by an electrode placed in the brain through a small surgery. Pradaxa (Dabigatran), Xarelto (Rivaroxaban) opening in the skull. The beneficial effects are seen on and Eliquis (Apixaban) must be discontinued 5 days the opposite side of the body, i.e. a lesion on the left side before your surgery. of your brain will help to control movement on the right 2) Since you will be having a MRI, it is important to inform side of your body. Pallidotomy will help reduce dyskinesia your neurosurgeon if you are claustrophobic, have metal (medication induced writhing), and will also improve fragments in your eye or have a pacemaker. bradykinesia (slowness). Admission to Hospital Risks Your surgeon’s office will contact you the day before your Risks include a rare chance of death (0.2%) and a low scheduled surgery to confirm the time to report to the Jim chance (7%) of weakness or blindness on the opposite side Pattison Pavilion Admitting Department. -
A Novel Diagnostic Tool for Concussion
Neurosurg Focus 33 (6):E9, 2012 Magnetoencephalographic virtual recording: a novel diagnostic tool for concussion MATTHEW TORMENTI, M.D.,1 DONALD KRIEGER, PH.D.,1 AVA M. PUCCIO, R.N., PH.D.,1 MALCOLM R. MCNEIL, PH.D.,2 WALTER SCHNEIDER, PH.D.,3 AND DAVID O. OKONKWO, M.D., PH.D.1 Departments of 1Neurological Surgery, 2Communication Science and Disorders, and 3Psychology, University of Pittsburgh, Pennsylvania Object. Heightened recognition of the prevalence and significance of head injury in sports and in combat veter- ans has brought increased attention to the physiological and behavioral consequences of concussion. Current clinical practice is in part dependent on patient self-report as the basis for medical decisions and treatment. Magnetoen- cephalography (MEG) shows promise in the assessment of the pathophysiological derangements in concussion. The authors have developed a novel MEG-based neuroimaging strategy to provide objective, noninvasive, diagnostic information in neurological disorders. In the current study the authors demonstrate a novel task protocol and then assess MEG virtual recordings obtained during task performance as a diagnostic tool for concussion. Methods. Ten individuals (5 control volunteers and 5 patients with a history of concussion) were enrolled in this pilot study. All participants underwent an MEG evaluation during performance of a language/spatial task. Each individual produced 960 responses to 320 sentence stimuli; 0.3 sec of MEG data from each word presentation and each response were analyzed: the data from each participant were classified using a rule constructed from the data obtained from the other 9 participants. Results. Analysis of response times showed significant differences (p < 10-4) between concussed and normal groups, demonstrating the sensitivity of the task. -
NSJ-Spine January 2004
Neurosurg Focus 25 (1):E9, 2008 Modern psychosurgery before Egas Moniz: a tribute to Gottlieb Burckhardt SUNIL MANJILA, M.D., SETTI RENGACHARY, M.D., ANDREW R. XAVIER, M.D., BRANDON PARKER, B.A., AND MURALI GUTHIKONDA, M.D. Department of Neurosurgery, Wayne State University School of Medicine and Detroit Medical Center, Detroit, Michigan The history of modern psychosurgery has been written in several ways, weaving around many pioneers in the field during the 19th century. Often neglected in this history is Gottlieb Burckhardt (1836–1907), who performed the first psychosurgical procedures as early as 1888, several decades before the work of Egas Moniz (1874–1955). The uncon- ventional and original case series of Burckhardt, who claimed success in 50% of patients (3 of 6), had met with overt criticism from his contemporary medical colleagues. The authors describe 2 illustrative cases of cortical extirpation performed by Burckhardt and review his pioneering case series for surgical outcome, despite the ambiguity in postop- erative evaluation criteria. Although Burckhardt discontinued the project after publication of his surgical results in 1891, neurosurgeons around the world continued to investigate psychosurgery and revitalized his ideas in 1910; psy- chosurgery subsequently developed into a full-fledged neurosurgical specialty.(DOI: 10.3171/FOC/2008/25/7/E9) KEY WORDS • Burckhardt • Moniz • Prefargier • psychosurgery • topectomy OTTLIEB Burckhardt (1836–1907; Fig. 1), a Swiss operations of the Prefargier asylum for 5 years before retir- psychiatrist, was the first physician to perform ing in 1896.3,4 Burckhardt died of pneumonia in 1907.2 G modern psychosurgery, in which the contemporary theories about brain–behavior and brain–language relation- Contemporary Research Influences ships were amalgamated and practically applied to patient The neuroscience environment that prevailed in the late care. -
Epilepsy the Term Epilepsy Describes Brain Disorders That Involve Repeated Seizures
Epilepsy The term epilepsy describes brain disorders that involve repeated seizures. Seizures are sudden, uncontrollable waves of electrical activity in the brain that cause involuntary movement, a change in attention, or loss of consciousness. They may involve the entire brain or take place in one part of the brain. Your doctor may use a physical exam, electroencephalogram (EEG), head CT, head MRI or lumbar puncture to diagnose you. Treatment depends on what is causing your seizures. What is epilepsy? The term epilepsy describes brain disorders that involve repeated seizures also called convulsions. A seizure is a sudden, uncontrollable wave of electrical activity in the brain that can affect a person's behavior for a short period of time. For example, there can be involuntary movement, a change in attention, or loss of consciousness. The word epilepsy or seizure does not imply that there is a cause for it. Doctors perform many tests to find the cause for your seizures (such as brain injury, brain bleed, tumor among a few). However, in many cases, the cause of epilepsy cannot be found. A seizure may happen just once, a few or many times over a long period. Symptoms may vary between patients and depend on the type of seizure. They often relate to the normal function of the affected part of the brain. Epilepsy is not contagious. There are two major types of seizures: generalized, in which the entire brain is involved, and focal, in which abnormal activity occurs in one part of the brain. Generalized: seizures involve the entire brain Focal: abnormal activity takes place in just one part of the brain. -
Non-Invasive Functional-Brain-Imaging with a Novel Magnetoencephalography System
Non-Invasive Functional-Brain-Imaging with a Novel Magnetoencephalography System Amir Borna, Member, IEEE, Tony R. Carter, Anthony P. Colombo, Yuan-Yu Jau, Jim McKay, Michael Weisend, Samu Taulu, Julia M. Stephen, and Peter D. D. Schwindt systems benefit from mature technology and analysis methods, Abstract—A non-invasive functional-brain-imaging system they face two limiting factors: 1) fixed sensor positions, and 2) based on optically-pumped-magnetometers (OPM) is presented. high maintenance cost. SQUID sensors operate at ~ 4 K and The OPM-based magnetoencephalography (MEG) system liquid helium is used to achieve cryogenic temperature. Regular features 20 OPM channels conforming to the subject’s scalp. Due to proximity (12 mm) of the OPM channels to the brain, it is costly maintenance is required to fill the helium reservoir and anticipated that this MEG system offers an enhanced spatial calibrate the SQUID-based MEG system, although recent resolution as it can capture finer spatial features compared to advancements in helium recycling [18] is reducing maintenance traditional MEG systems employing superconducting quantum costs. The main limitation of SQUID-based MEG system, interference device (SQUID). We have conducted two MEG which also stems from the use of cryogens, is fixed sensor experiments on three subjects: somatosensory evoked magnetic position. Due to use of liquid helium a thick Dewar is required field (SEF) and auditory evoked magnetic field (AEF) using our OPM-based MEG system and a commercial SQUID-based MEG to isolate the sensors from the room temperature, hence the system. We have cross validated the robustness of our system by fixed position of sensors inside the rigid helmet.