Magnetic endoscope imaging

(A) AP image of endoscope inserted to the distal transverse colon; note the 3-D illusion created by the grey-scale shading and the (electronically placed) rib margin (light and dark blue markers) and anal site (green marker) markers. (B) Lateral view of the same image; the purple sphere is the hand marker showing the site of assistant hand-pressure on the sigmoid colon loop.