Table 1.

Comparison of techniques to identify the intersegmental plane during thoracoscopic segmentectomy

Method	Inflation-deflation line		Intravenous indocyanine green	Virtual-assisted lung mapping
	Target segment deflated	Target segment inflated
Advantages	- No preparation is necessary - Easy and quick	- Less interference with the surgical view - Relatively easy	- Easy and quick - Able to create the demarcation around the hilum	- Provides geometric information on the lung surface
Disadvantages	- Interference with the surgical view - Prolongation of the operation time - Intersegmental lines could be unclear due to collateral ventilation	- Some preparation or help of the anesthesiologist is needed - The needle injection method has been discarded due to air embolism - Intersegmental lines could be unclear due to collateral ventilation	- Correct identification of the pulmonary artery is necessary - An emphysematous lung that is less-perfused may be misleading or confusing - Infrared thoracoscopy is required	- Requires preoperative preparation - Basic instruments and some facilities are needed