2D TOF MRA/MRV Coronal 3D Image (AER position)

The 2D Time-Of-Flight MRA/MRV displays in high resolution the arteries and veins which supply the brachial plexus. The transverse image (perpendicular to the line of sight when looking in the direction from the feet toward the head) on top helps provide a 3D perspective. The amount of blood flow is proportional to signal intensity (which correlates to proton density). Gray, hazy areas indicate diminished flow (compression).

In this view, the patient's arms are in the abduction external rotation (AER) position, which is overhead. When changing from the neutral position (arms at side) to the AER position, the manubrium is displaced backward. The clavicles with the subclavius muscles rotate posterior inferiorly, decreasing the size of the thoracic inlet enhancing costoclavicular compressing of the brachial plexus, subclavian veins and arteries against the first ribs.

See a 3D rotating view of this image.

A different perspective is obtained by viewing the negative image, where the black/white color map is reversed (i.e. black becomes white and white becomes black).