Figure 2.

Schematic diagram of needle biopsy for peripheral pulmonary lesions behind ribs along linear path and non-linear path. (A) Along linear path: Biopsy failed due to the needle hindered by the rib; (B) Along non-linear path: Biopsy completed avoiding the rib successfully through deflecting the needle from position 1 to position 2 (the solid line representing the actual track of the needle, the dotted line representing the position of the needle after deflection, the arrow representing the position of the needle tip).