IMAGING IN TRAUMATIC NERVE INJURY

Author

Iran University of Medical Sciences

10.22034/icrj.2022.173644

Abstract

Due to the extensive and large neural network and the limited time to present information related to traumatic lesions, this article deals with the imaging of common and important neural lesions.
First, a schematic view of the anatomy of the natural nerve and its various layers, including the; 1. fascicle which contain: Axon, Endoneurium, Perineurium, and then the accumulation of a number of fascicles along with the Epineurium, which forms the nerve.
Second, the image of the natural nerve will be discussed in imaging modalities,especially ultrasound and MRI in the axial, sagittal and coronal sections.
Third schematic types of neurological traumas including; Neuropraxia (grade I), Axonotmesis (Grade II) and Neurotmesis including (Grade III-V) and traumatic
lesions (Grade VI)(combination of lesions 1-5) and then will be discuss about their appearance in different visual modalities. Such as radiology, plain CT and CT myelography, ultrasound and MRI, which include direct symptoms such as change in size and shape and extension and echo or signal, as well as indirect symptoms including muscle denervation change, perineural fibrosis and neuroma formation
in the proximal part of nerve damage.
Following the conference important nerve lesions such as Brachial plexus injury including anatomy and pathology (Roots, trunks, Divisions cords and Branches) in various imaging modalities, especially ultrasound and MRI will be discuss [including techniques and sequences used to diagnose nerve damage such as T1 (NON FATSAT) and 3D SPACE STIR sequences, T2 SPACE, STIR and DWI
sequence with low B VALUE.
In the next stage, important nerves of the upper limbs including median, ulnar,radial, axillary and supra scapularis nerves , and important nerves of the lower limbs including femoral, sciatic plexus, obturator and tibialis and proneal sacs will be presented.
 
 
Due to the extensive and large neural network and the limited time to present information related to traumatic lesions, this article deals with the imaging of common and important neural lesions.
First, a schematic view of the anatomy of the natural nerve and its various layers, including the; 1. fascicle which contain: Axon, Endoneurium, Perineurium, and then the accumulation of a number of fascicles along with the Epineurium, which forms the nerve.
Second, the image of the natural nerve will be discussed in imaging modalities,especially ultrasound and MRI in the axial, sagittal and coronal sections.
Third schematic types of neurological traumas including; Neuropraxia (grade I), Axonotmesis (Grade II) and Neurotmesis including (Grade III-V) and traumatic
lesions (Grade VI)(combination of lesions 1-5) and then will be discuss about their appearance in different visual modalities. Such as radiology, plain CT and CT myelography, ultrasound and MRI, which include direct symptoms such as change in size and shape and extension and echo or signal, as well as indirect symptoms including muscle denervation change, perineural fibrosis and neuroma formation
in the proximal part of nerve damage.
Following the conference important nerve lesions such as Brachial plexus injury including anatomy and pathology (Roots, trunks, Divisions cords and Branches) in various imaging modalities, especially ultrasound and MRI will be discuss [including techniques and sequences used to diagnose nerve damage such as T1 (NON FATSAT) and 3D SPACE STIR sequences, T2 SPACE, STIR and DWI
sequence with low B VALUE.
In the next stage, important nerves of the upper limbs including median, ulnar,radial, axillary and supra scapularis nerves , and important nerves of the lower limbs including femoral, sciatic plexus, obturator and tibialis and proneal sacs will be presented.