Figure 10

The correction effect of the chest model. (a) The sternum is elevated 15 mm at the 3rd intercostal space. (b) The sternum is elevated 20 mm at the 3rd intercostal space. (c) The sternum is elevated 25 mm at the 3rd intercostal space. (d) The sternum is elevated 30 mm at the 3rd intercostal space.