Real time recording with MTS- 1. A In the display to the left the postion x, y, and z and the orientation θ, and φ are visualised along with the position of the sensor array over the body. To the right the concurrent recording of the magnetic pills movement through the duodenal arch is displayed. B The duodenal passage is visualised as the magnetic pills change in position (x, y, and z) (arrow 1) in combination with disappearance of the characteristic 3 contractions per minute patterns of the stomach (θ and φ) (arrow 2). The curve at the bottom detects artefacts from respiration and movement.