Revisiting the spectrum of lower motor neuron diseases with snake eyes appearance on magnetic resonance imaging

2014 ◽  
Vol 21 (9) ◽  
pp. 1233-1241 ◽  
Author(s):  
M.-V. Lebouteux ◽  
J. Franques ◽  
R. Guillevin ◽  
E. Delmont ◽  
T. Lenglet ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Motor Neuron ◽  
Lower Motor Neuron ◽  
Resonance Imaging ◽  
Motor Neuron Diseases

Magnetic resonance imaging in motor neuron disease

1990 ◽  
Vol 237 (8) ◽  
pp. 471-474 ◽  
Author(s):  
M. L. Sales Lu�s ◽  
A. Hormigo ◽  
C. Maur�cio ◽  
M. M. Alves ◽  
R. Serr�o
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Motor Neuron ◽  
Motor Neuron Disease ◽  
Resonance Imaging

scholarly journals Is magnetic resonance imaging a plausible biomarker for upper motor neuron degeneration in amyotrophic lateral sclerosis/primary lateral sclerosis or merely a useful paraclinical tool to exclude mimic syndromes? A critical review of imaging applicability in clinical routine

2012 ◽  
Vol 70 (7) ◽  
pp. 532-539 ◽  
Author(s):  
Antonio José da Rocha ◽  
Antonio Carlos Martins Maia Júnior
Keyword(s):  
Magnetic Resonance Imaging ◽  
Amyotrophic Lateral Sclerosis ◽  
Magnetic Resonance ◽  
Motor Neuron ◽  
Imaging Techniques ◽  
Diagnostic Tools ◽  
Conventional Magnetic Resonance Imaging ◽  
Resonance Imaging ◽  
Conventional Magnetic Resonance ◽  
Lateral Sclerosis

Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease that affects motor neurons in the cerebral cortex, brainstem, and spinal cord, brain regions in which conventional magnetic resonance imaging is often uninformative. Although the mean time from symptom onset to diagnosis is estimated to be about one year, the current criteria only prescribe magnetic resonance imaging to exclude "ALS mimic syndromes". Extensive application of non-conventional magnetic resonance imaging (MRI) to the study of ALS has improved our understanding of the in vivo pathological mechanisms involved in the disease. These modern imaging techniques have recently been added to the list of potential ALS biomarkers to aid in both diagnosis and monitoring of disease progression. This article provides a comprehensive review of the clinical applicability of the neuroimaging progress that has been made over the past two decades towards establishing suitable diagnostic tools for upper motor neuron (UMN) degeneration in ALS.

Muscle Atrophy and Hypertrophy

2018 ◽  
Author(s):  
Aziz Shaibani
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Muscle Atrophy ◽  
Muscle Hypertrophy ◽  
Resonance Imaging ◽  
Demyelinating Neuropathy ◽  
Motor Neuron Diseases ◽  
Fatty Replacement ◽  
Magnetic Resonance Imaging Mri ◽  
Atrophy And Hypertrophy

Muscle atrophy is usually caused by interruption of axonal flow [axonal neuropathies, motor neuron diseases (MNDs), etc.]. If weakness is out of proportion to atrophy, demyelinating neuropathy should be suspected. Chronic myopathies and immobility also may cause atrophy, but no electromyography (EMG) evidence of denervation or myopathy is found. The pattern of atrophy is often helpful to localize the lesions. Atrophy of the interossi and preservation of the bulk of the thenar muscles suggest ulnar neuropathy, but atrophy of both would suggest a C8 or plexus pathology. Muscle enlargement may be due to fatty replacement, which can be confirmed by EMG and magnetic resonance imaging (MRI), or due to real muscle hypertrophy from excessive discharges (neuromyotonia).

scholarly journals Diagnostic contribution of magnetic resonance imaging in an atypical presentation of motor neuron disease

2017 ◽  
Vol 7 (6) ◽  
pp. 727-731
Author(s):  
Lorenzo Ugga ◽  
Cinzia Coppola ◽  
Sirio Cocozza ◽  
Dario Saracino ◽  
Ferdinando Caranci ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Motor Neuron ◽  
Motor Neuron Disease ◽  
Atypical Presentation ◽  
Resonance Imaging
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