T2-weighted sequences are particularly sensitive to nerve edema and pathology, increasing the visibility of inflammatory or traumatic changes. High-resolution 3D sequences, such as MR neurography, utilize isotropic voxels to reconstruct the plexus in multiple planes without partial volume effects, ensuring that the entire brachial plexus anatomy is captured with clarity.
Brachial Plexus MRI Nerve Injury Assessment and Visualization
By visualizing the exact relationship of the cords to the axillary artery and the clavicle, surgeons can minimize iatrogenic injury. The reorganization of these divisions into cords, and finally into the terminal branches, creates the network responsible for motor and sensory function of the upper extremity.
Localization and Surgical Planning Detailed mapping of the brachial plexus anatomy is indispensable for surgical interventions, including nerve transfers and brachial plexus blocks. For instance, the presence of a cervical rib or an anomalous insertion of the scalene muscles can alter the course of the lower trunk.
Brachial Plexus MRI Nerve Injury Assessment and Visualization
Normal Variants and Common Anatomical Pitfalls Variations in the brachial plexus anatomy are common and can mimic pathology if the radiologist is not aware of them. Artifacts from metallic implants or patient movement can obscure the brachial plexus anatomy, leading to false-positive findings.
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