Figure 1.

Identification of the target segmental bronchi and vessels and their positional characteristics (a right S8 segmentectomy as an example). (A) A8 runs just posterior to A7, while A9 and A10 have a common stem; (B) B8 and B9b have a common stem and B8 runs anterior to B9b; (C) identifying a small intrasegmental vein of V8*, V8 was the major drainage vein while V8* was a small branch; (D) identifying the main intrasegmental drainage vein of S8 (V8) and the intersegmental vein between S8 and S9.