Table 2.

The reference standards of imaging diagnosis for two tasks. To score the malignancy risk and invasive risk of each GGN, two diagnostic reference standards were developed by grading the risk with five grades.

Task1		Task2
Reference Standard of Diagnosis	Score	Reference Standard of Diagnosis	Score
Highly suspicious normal/benign	1	Highly unlikely IA	1
Moderately suspicious benign	2	Moderately unlikely IA	2
Indeterminate/probably benign	3	Indeterminate	3
Moderately suspicious malignant	4	Moderately suspicious IA	4
Highly suspicious malignant	5	Highly suspicious IA	5