Table 1.

Introduction of datasets.

Dataset	Number of CXRs	Description	Application
VGHTPE training	559	659 CXRs with biopsy confirmed lung nodules obtained from VGHTPE and separated into 559 CXRs for training dataset and 100 CXRs isolated for testing dataset.	Training
VGHTPE testing	100		Testing
Shenzhen [13]	662	662 CXRs with segmented lung masks manually delineated by Stirenko and colleagues.	Segmentation
Montgomery [13]	138	80 normal CXRs and 58 CXRs with tuberculosis manifestations. All with lung masks.	Segmentation
NIH [14]	880	880 CXRs with annotations in 112,120 CXRs from NIH open dataset	Pretrain
JSRT [15]	154	154 CXRs with lung nodules in 247 CXRs collected by JSRT.	Testing

JSRT—the Japanese Society of Radiological Technology; NIH—National Institutes of Health; VGHTPE—Taipei Veterans General Hospital.