Table 1.

Search strategy.

Sources	Search in	MeSH terms	Limits	Search results
Web of science	Search manager	(“deep learning” OR “convolutional neural network” OR “machine learning” OR “radiomics” OR “radiomic”) AND (“CT” OR “MRI”) AND (“Lymph node” OR “lymph node metastasis” OR “Benign and malignant pulmonary nodules”)AND (“lung cancer” OR “non-small cell lung cancer” OR “NSCLC”)	None	11
PubMed, (MEDLINE)	N/A	(“deep learning” OR “convolutional neural network” OR “machine learning” OR “radiomics” OR “radiomic”) AND (“CT” OR “MRI”) AND (“Lymph node” OR “lymph node metastasis” OR “benign and malignant pulmonary nodules”) AND (“lung cancer” OR “non-small cell lung cancer” OR “NSCLC”)	None	30
EMBASE	Quick search	(‘deep learning'/exp OR “deep learning” OR “machine learning”/exp OR “machine learning” OR “radiomics”/exp OR “radiomics” OR “radiomic”) AND (“ct”/exp OR “ct” OR “mri”/exp OR “mri”) AND (“lymph node”/exp OR “lymph node” OR “lymph node metastasis”/exp OR “lymph node metastasis” OR “benign and malignant pulmonary nodules”) AND (“lung cancer”/exp OR “non-small cell lung cancer” OR “NSCLC”)	None	56
Wanfang database	N/A	(“deep learning” OR “machine learning” OR “radiomics” OR “radiomic”) AND (“CT” OR “MRI”) AND (“Lymph node” OR “lymph node metastasis”) AND (“lung cancer” OR “NSCLC”)	None	5