Magnetic resonance imaging-induced forces on video capsule endoscopes: First systematic in vitro assessment

Figure 7 Examples of the radiographs taken from all video capsule endoscopes. The relative distances between yellow lines on the left represent the outer length (L_o). The relative distances between yellow lines on the right side of each capsule mark the length of the potentially magnetic inner parts (L_i). The relation of these relative distances (measured as pixels) together with physically measured length (mm) (Table 1) is used to calculate the absolute length of the solid inner part for each capsule.