Department of Radiology;
Tongji Hospital;
Tongji Medical College;
Huazhong University of Science and Technology;
Wuhan 430030;
China;
Department of Radiology;
Shenzhen Maternity&Child Healthcare Hospital Southern Medical University;
Shenzhen 518028;
China;
pulmonary nodules; tomography; X-ray computed; radiation dosage; lung; breast;