Short Axis (SAX) proximal to the radiocarpal joint and pronator quadratus muscle, with a measured cross-sectional area of the nerve.
SAX at the level of the lunate. Measuring the cross-sectional area of the nerve at this location.
Long-axis imaging of the median nerve through the carpal tunnel. This imaging should continue into the palm of the hand, showing the location of the nerve in relation to the palmar arch.