Figure 4. Ultrasound imaging of the normal carpal tunnel at the volar aspect of the wrist.

On this longitudinal scan, the median nerve (*) is seen overlying the relatively hyperechoic superficial (**) and deep (***) flexor tendons of the wrist. The median nerve appears as a hypoechoic honeycomb fibrillar structure. 

This is an original image from the ultrasound lab department of the American University of Antigua