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5] Goldie BS, Coates CJ. Brachial plexus injury: a survey of incidence and referral pattern. J Hand Surg [Br] 1992;17(1):86–8. [6] Gasparotti R, Ferraresi S, Pinelli L, et al. Threedimensional MR myelography of traumatic injuries of the brachial plexus. AJNR Am J Neuroradiol 1997;18(9):1733–42. [7] Miller R. Observations upon the arrangement of the axillary and brachial plexus. Am J Anat 1939;64:143. [8] Kerr A. Brachial plexus of nerves in man. The variations in its formation and branches. Am J Anat 1918; 23:285–395.

10. PET scan (A) and T2-weighted axial MRI (B) in a patient with progressive left-arm weakness and pain with a remote (20 y prior) history of breast cancer. The avid uptake on the PET scan and increased T2 signal on MRI distinguishes the patient’s recurrent breast cancer from radiation fibrosis. IMAGING THE BRACHIAL PLEXUS Fig. 11. Axial T2-weighted spin-echo image of a mass (arrow) in the right brachial plexus showing the ‘‘target’’ sign typical of neurogenic tumors. This mass was excised and shown to be a schwannoma.

Dedicated surface coils are an important element of successful imaging of the brachial plexus [1]. Standard neurovascular coils provide high 32 AMRAMI & PORT SNR but rarely extend laterally to include the entire brachial plexus. The body coil is often used in clinical practice for brachial plexus examinations but provides limited SNR and makes achieving in-plane resolution and thin sections ( 4 mm) difficult. Torso or cardiac arrays may be used, offset to the side of interest. The ideal brachial plexus coil would incorporate elements of the neurovascular and torso arrays but is not available except where custom-made for individual practices.

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