scholarly journals EEG representing on brain surface using volume rendering

2021 ◽  
Vol 8 (1) ◽  
pp. 10-15
Author(s):  
Dmitrii Klementev ◽  
Vladimir Guzhov ◽  
Wolfram Hardt
Keyword(s):  
Volume Rendering ◽  
Brain Research ◽  
Point Of View ◽  
Resonance Imaging ◽  
Mri Scan ◽  
Non Invasive ◽  
Brain Surface ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain ◽  
Brain Template

Brain research is challenging. One of the standard research methods is electroencephalography (EEG). As a rule, this study is presented in the form of graphs. This article describes an approach in which this data is mapped onto a brain model generated from a magnetic resonance imaging (MRI) scan. This allows you to look at the EEG study from a different point of view. An MRI scan will also allow you to take into account some of the features of the brain. This is an advantage over mapping just to a brain template. This non-invasive system can be implemented to monitor the patient in real-time, for example, during space flight.

scholarly journals Long-term Implication of Metronidazole Induced Reversible Cerebellar Toxicity and Peripheral Neuropathy- A Case Report

2021 ◽  
Author(s):  
Parmendra Sirohi ◽  
Hardeva Ram Nehara ◽  
Avadusidda Arakeri ◽  
Atma Ram Chhimpa ◽  
IH Sunil
Keyword(s):  
Resonance Imaging ◽  
Central Nervous System Toxicity ◽  
Mri Scan ◽  
Fluid Attenuated Inversion Recovery ◽  
Magnetic Resonance Imaging Mri ◽  
Permanent Neurological Deficit ◽  
The Brain ◽  
System Toxicity ◽  
Cerebellar Symptoms

Metronidazole Induced Encephalopathy (MIE) is rare and serious central nervous system toxicity. A 40-year-old male, on long-term self treatment with metronidazole (cumulative dose: 102 gm) presented with dysarthria, nystagmus, unsteadiness, and numbness in both legs. A Magnetic Resonance Imaging (MRI) scan of the brain revealed a symmetric hyperintensity in both the dentate nuclei of cerebellum on both T2 weighted and Fluid-Attenuated Inversion-Recovery (FLAIR) imaging. Discontinuation of metronidazole resulted in resolution of the imaging findings and clinical improvement occurred within one month. Metronidazole-induced neurotoxicity should be considered in patient who present with cerebellar symptoms and characteristic lesion on MRI in close temporal relation with metronidazole intake and drug should be discontinued to prevent permanent neurological deficit.

scholarly journals Epidermoid cyst causing hemifacial spasm epidermoid cyst in cerebellopontine angle presenting with hemifacial spasm

2012 ◽  
Vol 03 (03) ◽  
pp. 344-346 ◽  
Author(s):  
Murat Alemdar
Keyword(s):  
Hemifacial Spasm ◽  
Epidermoid Cyst ◽  
Vascular Compression ◽  
Resonance Imaging ◽  
Mri Scan ◽  
Root Exit Zone ◽  
Cerebellar Peduncles ◽  
Magnetic Resonance Imaging Mri ◽  
The Right ◽  
The Brain

ABSTRACTHemifacial Spasm (HS) occurs idiopathically or secondary to the lesions compressing the root exit zone of the facial nerve symptomatically. Symptomatic HS is generally due to vascular compression. We report on a 23-year-old male with right sided HS for a month. Magnetic resonance imaging (MRI) of the brain revealed a well-demarcated epidermoid cyst in the right cerebellopontine cistern. It was hypointense on T1-weighted imaging, hyperintense on T2-weighted imaging without contrast enhancement, hyperintense on DWI, and slightly hypointense on ADC relative to the brain. Although it caused shifting of the pons and medulla to the left side and compression of the right cerebellar peduncles and fourth ventricle, the sole symptom of the patient was HS. Clinicians are advised to request MRI/scan for brainstem lesions from the patients with HS. Epidermoid cysts in cerebellopontine cistern may present with HS as the sole symptom.

scholarly journals High-resolution MRI: in vivo histology?

2005 ◽  
Vol 361 (1465) ◽  
pp. 137-146 ◽  
Author(s):  
Holly Bridge ◽  
Stuart Clare
Keyword(s):  
Magnetic Resonance Imaging ◽  
High Resolution ◽  
Post Mortem ◽  
Resonance Imaging ◽  
Brain Surface ◽  
High Resolution Mri ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain ◽  
Very High

For centuries scientists have been fascinated with the question of how the brain works. Investigators have looked at both where different functions are localized and how the anatomical microstructure varies across the brain surface. Here we discuss how advances in magnetic resonance imaging (MRI) have allowed in vivo visualization of the fine structure of the brain that was previously only visible in post-mortem brains. We present data showing the correspondence between definitions of the primary visual cortex defined anatomically using very high-resolution MRI and functionally using functional MRI. We consider how this technology can be applied to allow the investigation of brains that differ from normal, and what this ever-evolving technology may be able to reveal about in vivo brain structure in the next few years.

scholarly journals The lifetime trajectory of schizophrenia and the concept of neurodevelopment

2010 ◽  
Vol 12 (3) ◽  
pp. 409-415 ◽  
Keyword(s):  
First Episode ◽  
Dementia Praecox ◽  
Ventricular Enlargement ◽  
Resonance Imaging ◽  
Brain Surface ◽  
Parsimonious Explanation ◽  
Neurodegenerative Dementia ◽  
Early Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain

Defining the lifetime trajectory of schizophrenia and the mechanisms that drive it is one of the major challenges of schizophrenia research. Kraepelin assumed that the mechanisms were neurodegenerative ("dementia praecox"), and the early imaging work using computerized tomography seemed to support this model. Prominent ventricular enlargement and increased cerebrospinal fluid on the brain surface suggested that the brain had atrophied. In the 1980s, however, both neuropathological findings and evidence from magnetic resonance imaging (MRI) provided evidence suggesting that neurodevelopmental mechanisms might be a better explanation. This model is supported by both clinical and MRI evidence, particularly the fact that brain abnormalities are already present in first-episode patients. However, longitudinal studies of these patients have found evidence that brain tissue is also lost during the years after onset. The most parsimonious explanation of these findings is that neurodevelopment is a process that is ongoing throughout life, and that schizophrenia occurs as a consequence of aberrations in neurodevelopmental processes that could occur at various stages of life.

scholarly journals Long-term Implication of Metronidazole Induced Reversible Cerebellar Toxicity and Peripheral Neuropathy- A Case Report

2021 ◽  
Author(s):  
Parmendra Sirohi ◽  
Hardeva Ram Nehara ◽  
Avadusidda Arakeri ◽  
Atma Ram Chhimpa ◽  
IH Sunil
Keyword(s):  
Resonance Imaging ◽  
Central Nervous System Toxicity ◽  
Mri Scan ◽  
Fluid Attenuated Inversion Recovery ◽  
Magnetic Resonance Imaging Mri ◽  
Permanent Neurological Deficit ◽  
The Brain ◽  
System Toxicity ◽  
Cerebellar Symptoms

Metronidazole Induced Encephalopathy (MIE) is rare and serious central nervous system toxicity. A 40-year-old male, on long-term self treatment with metronidazole (cumulative dose: 102 gm) presented with dysarthria, nystagmus, unsteadiness, and numbness in both legs. A Magnetic Resonance Imaging (MRI) scan of the brain revealed a symmetric hyperintensity in both the dentate nuclei of cerebellum on both T2 weighted and Fluid-Attenuated Inversion-Recovery (FLAIR) imaging. Discontinuation of metronidazole resulted in resolution of the imaging findings and clinical improvement occurred within one month. Metronidazole-induced neurotoxicity should be considered in patient who present with cerebellar symptoms and characteristic lesion on MRI in close temporal relation with metronidazole intake and drug should be discontinued to prevent permanent neurological deficit.

scholarly journals Non-invasive diagnostics in fossils - Magnetic Resonance Imaging of pathological belemnites

2005 ◽  
Vol 2 (2) ◽  
pp. 133-140 ◽  
Author(s):  
D. Mietchen ◽  
H. Keupp ◽  
B. Manz ◽  
F. Volke
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Clinical Diagnostics ◽  
Resonance Imaging ◽  
Non Invasive ◽  
Physiological Processes ◽  
Magnetic Resonance Imaging Mri ◽  
Invasive Diagnostics

Abstract. For more than a decade, Magnetic Resonance Imaging (MRI) has been routinely employed in clinical diagnostics because it allows non-invasive studies of anatomical structures and physiological processes in vivo and to differentiate between healthy and pathological states, particularly of soft tissue. Here, we demonstrate that MRI can likewise be applied to fossilized biological samples and help in elucidating paleopathological and paleoecological questions: Five anomalous guards of Jurassic and Cretaceous belemnites are presented along with putative paleopathological diagnoses directly derived from 3D MR images with microscopic resolution. Syn vivo deformities of both the mineralized internal rostrum and the surrounding former soft tissue can be traced back in part to traumatic events of predator-prey-interactions, and partly to parasitism. Besides, evidence is presented that the frequently observed anomalous apical collar might be indicative of an inflammatory disease. These findings highlight the potential of Magnetic Resonance techniques for further paleontological applications.

scholarly journals Cinematic rendering of a burst sagittal suture caused by an occipito-frontal gunshot wound

2021 ◽  
Author(s):  
Dominic Gascho ◽  
Michael J. Thali ◽  
Rosa M. Martinez ◽  
Stephan A. Bolliger
Keyword(s):  
Gunshot Wound ◽  
Three Dimensional ◽  
The Novel ◽  
Sagittal Suture ◽  
Resonance Imaging ◽  
Cinematic Rendering ◽  
Reconstruction Methods ◽  
Dimensional Reconstruction ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain

AbstractThe computed tomography (CT) scan of a 19-year-old man who died from an occipito-frontal gunshot wound presented an impressive radiating fracture line where the entire sagittal suture burst due to the high intracranial pressure that arose from a near-contact shot from a 9 mm bullet fired from a Glock 17 pistol. Photorealistic depictions of the radiating fracture lines along the cranial bones were created using three-dimensional reconstruction methods, such as the novel cinematic rendering technique that simulates the propagation and interaction of light when it passes through volumetric data. Since the brain had collapsed, depiction of soft tissue was insufficient on CT images. An additional magnetic resonance imaging (MRI) examination was performed, which enabled the diagnostic assessment of cerebral injuries.

Transdermal Patch Administration and Magnetic Resonance Imaging (MRI)—2020

2021 ◽  
pp. 001857872098713
Author(s):  
Janna Afanasjeva ◽  
Michael Gabay ◽  
Thomas Poznanski ◽  
Stefanie Kerns
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Drug Administration ◽  
Hospital Pharmacy ◽  
Transdermal Patch ◽  
Resonance Imaging ◽  
Mri Scan ◽  
Transdermal Patches ◽  
Magnetic Resonance Imaging Mri ◽  
Prescribing Information

This is an update to the 2010 article published in Hospital Pharmacy on safety concerns involving transdermal patches and magnetic resonance imaging (MRI). Since publication of the original article, new brand and generic transdermal medications have become available and notable changes regarding the presence or absence of metallic content among existing transdermal formulations occurred. To update the tables within the article, Food and Drug Administration (FDA)-approved transdermal medications through October 2020 were researched in order to determine metallic content and procedures for reapplication after MRI, if applicable. Readers should consult the prescribing information or manufacturer for the most current information on use of transdermal medications in the MRI setting. Of note, manufacturers have not evaluated the use of transdermal products while patients undergo a MRI scan.

scholarly journals Kernohan-Woltman Notch Phenomenon—Case Report

2016 ◽  
Vol 38 (01) ◽  
pp. 056-059
Author(s):  
Carlos Pereira
Keyword(s):  
Magnetic Resonance Imaging ◽  
Case Report ◽  
Magnetic Resonance ◽  
Chronic Subdural Hematoma ◽  
Motor Deficit ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Mri Scan ◽  
Present Case Report ◽  
Magnetic Resonance Imaging Mri

AbstractThe Kernohan-Woltman notch phenomenon is a paradoxical neurological manifestation consisting of a motor deficit ipsilateral to a primary brain injury. It has been observed in patients with brain tumors and with supratentorial hematomas. It is considered a false localizing neurological sign. Magnetic resonance imaging (MRI) scan has been the test of choice. The recognition of this phenomenon is important to prevent a surgical procedure on the opposite side of the lesion. The present case report describes a case of chronic subdural hematoma with a probable finding of the Kernohan-Woltman phenomenon, and it discusses its pathophysiology, imaging findings, treatment, and prognosis.

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