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"Neuroimaging"AND "spinal cord injury"

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https://www.readbyqxmd.com/read/29746465/the-cybathlon-bci-race-successful-longitudinal-mutual-learning-with-two-tetraplegic-users
#1
Serafeim Perdikis, Luca Tonin, Sareh Saeedi, Christoph Schneider, José Del R Millán
This work aims at corroborating the importance and efficacy of mutual learning in motor imagery (MI) brain-computer interface (BCI) by leveraging the insights obtained through our participation in the BCI race of the Cybathlon event. We hypothesized that, contrary to the popular trend of focusing mostly on the machine learning aspects of MI BCI training, a comprehensive mutual learning methodology that reinstates the three learning pillars (at the machine, subject, and application level) as equally significant could lead to a BCI-user symbiotic system able to succeed in real-world scenarios such as the Cybathlon event...
May 2018: PLoS Biology
https://www.readbyqxmd.com/read/29715578/leisure-time-physical-activity-of-people-with-chronic-spinal-cord-injuries
#2
Katarzyna Kaźmierczak, Przemysław Lisiński
OBJECTIVE: The aim of this study was to evaluate the nature of LTPA performed by patients with incomplete spinal cord injury a minimum of 12 months after injury. Therefore, the study investigates the impact of injury location on the form and frequency of LTPA, time between injury and commencement of LTPA, motivations to undertake such physical activity, as well as factors which reduce participation. PATIENT AND METHODS: The study included 75 patients aged 18-60...
April 24, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29714644/functional-outcomes-in-patients-with-co-occurring-traumatic-brain-injury-and-spinal-cord-injury-from-an-inpatient-rehabilitation-facility-s-perspective
#3
Kristin L Garlanger, Lisa A Beck, Andrea L Cheville
OBJECTIVE: To examine the occurrence and severity of co-occurring traumatic brain injury (TBI) in persons with traumatic spinal cord injury (SCI), i.e. dual diagnosis (DD), and to describe differences in functional outcomes between persons with DD and SCI only from an inpatient rehabilitation facility (IRF) perspective. DESIGN: Retrospective clinical chart review. SETTING: Acute Midwest SCI inpatient rehabilitation facility. PARTICIPANTS: 256 persons age 18-80 years with acute traumatic SCI (AIS A-E, C1-S3 level of injury) from 2002-2012...
May 1, 2018: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29702136/brain-changes-after-spinal-cord-injury-a-quantitative-meta-analysis-and-review
#4
REVIEW
Linda Solstrand Dahlberg, Lino Becerra, David Borsook, Clas Linnman
Spinal Cord Injuries (SCI) lead to alterations in brain structure and brain function by direct effects of nerve damage, by secondary mechanisms, and also by longer term injury consequences such as paralysis and neuropathic pain. Here, we review neuroimaging studies of patients with traumatic spinal cord injuries, perform a quantitative meta-analysis of motor and motor imagery studies, summarize structural studies, evidence of cortical reorganization, and provide an overview of diffusion and spectroscopy studies...
April 24, 2018: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29600499/isoflurane-anesthesia-does-not-affect-spinal-cord-neurovascular-coupling-evidence-from-decerebrated-rats
#5
Thierry Paquette, Hugues Leblond, Mathieu Piché
Neurological examination remains the primary clinical investigation in patients with spinal cord injury. However, neuroimaging methods such as functional magnetic resonance imaging (fMRI) are promising tools for following functional changes in the course of injury, disease and rehabilitation. However, the relationship between neuronal activity and blood flow in the spinal cord on which fMRI relies has been largely overlooked. The objective of this study was to examine neurovascular coupling in the spinal cord of decerebrated rats during electrical stimulation of the sciatic nerve with and without isoflurane anesthesia (1...
March 29, 2018: Journal of Physiological Sciences: JPS
https://www.readbyqxmd.com/read/29504292/current-clinical-applications-of-diffusion-tensor-imaging-in-neurological-disorders
#6
REVIEW
Woo Suk Tae, Byung Joo Ham, Sung Bom Pyun, Shin Hyuk Kang, Byung Jo Kim
Diffusion-tensor imaging (DTI) is a noninvasive medical imaging tool used to investigate the structure of white matter. The signal contrast in DTI is generated by differences in the Brownian motion of the water molecules in brain tissue. Postprocessed DTI scalars can be used to evaluate changes in the brain tissue caused by disease, disease progression, and treatment responses, which has led to an enormous amount of interest in DTI in clinical research. This review article provides insights into DTI scalars and the biological background of DTI as a relatively new neuroimaging modality...
April 2018: Journal of Clinical Neurology
https://www.readbyqxmd.com/read/29405479/persistent-extreme-hyperextension-of-the-fetal-neck-clinical-and-neuroimaging-findings
#7
Shai Shrot, Clark T Johnson, W Christopher Golden, Ahmet A Baschat, Janine E Bullard, Aylin Tekes, Andrea Poretti, Emily Dunn, Thierry A G M Huisman
BACKGROUND AND PURPOSE: Persistent hyperextension of the fetal craniocervical junction or neck is one of several fetal positions commonly observed on prenatal imaging. Underlying fetal structural etiologies such as fetal neck masses and iniencephaly can be detected as causes of hyperextension. Caesarean delivery is considered in cases of vaginal delivery or obstructed labor for fear of cervical spinal cord injury. In this case series, we describe the prenatal magnetic resonance imaging (MRI) findings and their potential role in obstetric management and discuss postnatal outcomes in fetuses demonstrating prenatal imaging findings of persistent extreme hyperextension of the neck...
February 5, 2018: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/29403246/surgical-management-of-c-type-subaxial-cervical-fractures-using-cervical-traction-followed-by-anterior-cervical-discectomy-and-fusion-within-12-h-after-the-trauma
#8
Pasquale Donnarumma, Vincenzo Bozzini, Gaetano Rizzi, Arturo Berardi, Gaetano Merlicco
Study Design: This was a retrospective cohort study. Objective: To report our 10-year experience of closed reduction using Crutchfield traction followed by anterior cervical discectomy and fusion within 12 h from injury for C-type subaxial cervical fractures (according to the AOSpine classification system). Methods: Clinical records and neuroimaging were retrospectively reviewed. Surgical details were provided. Results: A total of 22 patients were included in the study...
October 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/29338912/-surgical-outcomes-of-traumatic-cervical-fractures-in-patients-with-ankylosing-spondylitis
#9
Alberto Isla Guerrero, Beatriz Mansilla Fernández, Borja Hernández Garcia, Álvaro Gómez de la Riva, María Luisa Gandía González, Elena Isla Paredes
OBJECTIVE: Ankylosing spondylitis is an inflammatory rheumatic disease mainly affecting the axial skeleton. The rigid spine may secondarily develop osteoporosis, further increasing the risk of spinal fracture. In this study, we reviewed fractures in patients with ankylosing spondylitis that had been clinically diagnosed to better define the mechanism of injury, associated neurological deficit, predisposing factors, and management strategies. METHODS: Between January 2004 and December 2014, 6 patients with ankylosing spondylitis and neurological complications after injuries were treated...
January 12, 2018: Neurocirugía
https://www.readbyqxmd.com/read/29175055/cortical-morphometric-changes-after-spinal-cord-injury
#10
Raffaele Nardone, Yvonne Höller, Luca Sebastianelli, Viviana Versace, Leopold Saltuari, Francesco Brigo, Piergiorgio Lochner, Eugen Trinka
Neuroimaging studies suggest that spinal cord injury (SCI) may lead to significant anatomical alterations in the human sensorimotor system. In particular, voxel-based morphometry (VBM) of cortical volume has revealed a significant gray and white matter atrophy bilaterally in the primary sensory cortex (S1). By contrast, some structural studies failed to detect changes in gray matter volume (GMV) in the primary motor cortex (M1) following SCI, whereas others have reported a substantial decrease of GMV also in M1...
March 2018: Brain Research Bulletin
https://www.readbyqxmd.com/read/28804041/cell-therapy-as-a-new-approach-to-the-treatment-of-posttraumatic-syringomyelia
#11
Jesús Vaquero, Rasha Hassan, Cecilia Fernández, Gregorio Rodríguez-Boto, Mercedes Zurita
BACKGROUND: Cell transplantation with autologous bone marrow-derived mesenchymal stromal cells (MSCs) seems to be a therapeutic promise for patients with established spinal cord injury, achieving improvement in their quality of life, but there is no experience with the application of this type of cell therapy in patients suffering posttraumatic syringomyelia. OBJECTIVE: To study the possible utility of cell therapy with autologous MSCs in posttraumatic syringomyelia...
November 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28758543/inconsistencies-with-screening-for-traumatic-brain-injury-in-spinal-cord-injury-across-the-continuum-of-care
#12
Seema Sikka, Angela Vrooman, Librada Callender, David Salisbury, Monica Bennett, Rita Hamilton, Simon Driver
OBJECTIVE: Explore how traumatic brain injury (TBI) is screened among spinal cord injury (SCI) patients across the continuum of care. DESIGN: Retrospective chart review Setting: Emergency department, trauma, inpatient rehabilitation Participants: 325 patients with SCI from inpatient rehabilitation facility (IRF) between March 1, 2011 and December 31, 2014 were screened. 49 eligible subjects had traumatic SCI and received care in adjoining acute care (AC) hospital...
July 31, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28649492/relationship-between-brainstem-neurodegeneration-and-clinical-impairment-in-traumatic-spinal-cord-injury
#13
Patrick Grabher, Claudia Blaiotta, John Ashburner, Patrick Freund
BACKGROUND: Brainstem networks are pivotal in sensory and motor function and in recovery following experimental spinal cord injury (SCI). OBJECTIVE: To quantify neurodegeneration and its relation to clinical impairment in major brainstem pathways and nuclei in traumatic SCI. METHODS: Quantitative MRI data of 30 chronic traumatic SCI patients (15 with tetraplegia and 15 with paraplegia) and 23 controls were acquired. Patients underwent a full neurological examination...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28466257/cortical-representation-of-pain-and-touch-evidence-from-combined-functional-neuroimaging-and-electrophysiology-in-non-human-primates
#14
REVIEW
Li Min Chen
Human functional MRI studies in acute and various chronic pain conditions have revolutionized how we view pain, and have led to a new theory that complex multi-dimensional pain experience (sensory-discriminative, affective/motivational, and cognitive) is represented by concurrent activity in widely-distributed brain regions (termed a network or pain matrix). Despite these breakthrough discoveries, the specific functions proposed for these regions remain elusive, because detailed electrophysiological characterizations of these regions in the primate brain are lacking...
February 2018: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28393423/are-midsagittal-tissue-bridges-predictive-of-outcome-after-cervical-spinal-cord-injury
#15
Eveline Huber, Patrice Lachappelle, Reto Sutter, Armin Curt, Patrick Freund
T2 -weighted scans provided data on the extent and dynamics of neuronal tissue damage and midsagittal tissue bridges at the epicenter of traumatic cervical spinal cord lesions in 24 subacute tetraplegic patients. At 1 month postinjury, smaller lesion area and midsagittal tissue bridges identified those patients with lower extremity evoked potentials and better clinical recovery. Wider midsagittal tissue bridges and smaller lesions at 1 month post-injury were associated with neurological and functional recovery at 1-year follow-up...
May 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28385062/diffusion-tensor-imaging-parameter-obtained-during-acute-blunt-cervical-spinal-cord-injury-in-predicting-long-term-outcome
#16
Kathirkamanathan Shanmuganathan, Jaichen Zhuo, Hegang H Chen, Bizhan Aarabi, Jason Adams, Catriona Miller, Jay Menakar, Rao P Gullapalli, Stuart E Mirvis
There are no reliable neuroimaging biomarkers to predict long-term outcome after spinal cord injury. This prospective longitudinal study evaluates diffusion tensor imaging (DTI) in predicting long-term outcome after cervical spinal cord injury (CSCI). We investigate the admission DTI parameters measured in 30 patients with CSCI, with 16 of them followed up to one year, and 15 volunteers serving as controls. All magnetic resonance imaging examinations were performed within 24 h of injury. The DTI parameters were measured in patients and controls, avoiding areas of hemorrhage in patients and at corresponding upper/middle/lower regions of the spinal cord in controls...
November 1, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28089079/repeated-subarachnoid-administrations-of-autologous-mesenchymal-stromal-cells-supported-in-autologous-plasma-improve-quality-of-life-in-patients-suffering-incomplete-spinal-cord-injury
#17
Jesús Vaquero, Mercedes Zurita, Miguel A Rico, Celia Bonilla, Concepción Aguayo, Cecilia Fernández, Noemí Tapiador, Marta Sevilla, Carlos Morejón, Jesús Montilla, Francisco Martínez, Esperanza Marín, Salvador Bustamante, David Vázquez, Joaquín Carballido, Alicia Rodríguez, Paula Martínez, Coral García, Mercedes Ovejero, Marta V Fernández
BACKGROUND AIMS: Cell therapy with mesenchymal stromal cells (MSCs) offers new hope for patients suffering from spinal cord injury (SCI). METHODS: Ten patients with established incomplete SCI received four subarachnoid administrations of 30 × 106 autologous bone marrow MSCs, supported in autologous plasma, at months 1, 4, 7 and 10 of the study, and were followed until the month 12. Urodynamic, neurophysiological and neuroimaging studies were performed at months 6 and 12, and compared with basal studies...
March 2017: Cytotherapy
https://www.readbyqxmd.com/read/27907952/neurology-of-critical-care
#18
Eelco F M Wijdicks
It is a truism that care of the patient with an acutely severe neurologic illness starts with a full neurologic examination. Neurologic examination is followed by tests (neuroimaging and laboratory) resulting in a diagnosis (presumptive or definitive) and treatment (definitive or preemptive) and followed by admission for supportive care and more treatment. The sequence of decisions depends on the diagnosis, but treatment may be needed to diagnose a neurologic disorder. To find out what underlies the acute presentation of certain neurologic conditions requires (1) interpretation of neurologic findings, (2) interpretation of neuroimaging, (3) linking laboratory abnormalities to certain clinical neurologic findings, and (4) evaluation of improvement or refractoriness after treatment...
December 2016: Seminars in Neurology
https://www.readbyqxmd.com/read/27720818/sct-spinal-cord-toolbox-an-open-source-software-for-processing-spinal-cord-mri-data
#19
Benjamin De Leener, Simon Lévy, Sara M Dupont, Vladimir S Fonov, Nikola Stikov, D Louis Collins, Virginie Callot, Julien Cohen-Adad
For the past 25 years, the field of neuroimaging has witnessed the development of several software packages for processing multi-parametric magnetic resonance imaging (mpMRI) to study the brain. These software packages are now routinely used by researchers and clinicians, and have contributed to important breakthroughs for the understanding of brain anatomy and function. However, no software package exists to process mpMRI data of the spinal cord. Despite the numerous clinical needs for such advanced mpMRI protocols (multiple sclerosis, spinal cord injury, cervical spondylotic myelopathy, etc...
January 15, 2017: NeuroImage
https://www.readbyqxmd.com/read/27417400/neuroimaging-of-the-traumatic-spine
#20
REVIEW
Marcel Wolf, Marc-André Weber
The article summarizes classification schemes of spinal trauma and rules to decide on proper imaging modality after a spinal trauma. High-risk factors that recommend imaging are, for instance, age 65 years or older, a dangerous trauma mechanism, and paresthesia in the extremities. More recent classification schemes include evaluation of the posterior ligamentous complex, for which MR imaging is the best modality, and to give therapeutic recommendations for conservative or surgical management. MR imaging is the imaging method of choice when spinal cord injury, cord compression, or ligamentous injury is suspected...
August 2016: Magnetic Resonance Imaging Clinics of North America
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