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CT

red-brachial, subclavian, axillary artery, carotid artery, brachiocephalic artery

blue-brachial, subclavian, axillary vein, internal jugular vein, right brachiocephalic vein

green-nerve roots and brachial plexus as well as more peripheral branches

orange-anterior scalene muscle

purple-middle and posterior scalene muscles

yellow-anterior tubercle of C6 vertebra

MR