Figure 3: Normal MR imaging planes and appearance of brachial plexus. A-B, Acquisition of the axial plane. The coronal plane is also used to plan axial images,the axial images are acquired perpendicular to the long axis of the cervical vertebrae from C4 to T3 (A) depicting the nerve roots as they exit from neural foraminaeas seen here on fat-suppressed T2-weighted image (B).