Table 2 Result of air leak sites detection in ICG group

Number of detected sites, n

Traditional sealing test

30

ICG inhalation test

50

Time for detecting sites, s

Traditional sealing test

160

ICG inhalation test

95

Status of detected sites by ICG inhalation test, n

Matched air leak sites

29

Additional air leak sites

18

False positive

3

False negative

1

Total air leak sites, n

48

Detection rate, %

Traditional sealing test

60%

ICG inhalation test

98%