Clinical Research Directory

1.Community Health Service Centers (Cluster Level) 1. Inclusion Criteria The community health service center must be located within one of the 11 districts of Guangzhou. The center must manage a population of over 10,000 elderly individuals. The center should be equipped with at least one CT machine and have qualified medical personnel, such as radiologists, radiologic technicians, and nursing staff. 2. Exclusion Criteria Community health centers currently participating in other public health projects or studies that may affect screening results. Community health service centers where researchers cannot collect data or conduct follow-up. 2\. Screening Subjects (Individual Level) 1. Inclusion Criteria Aged 40-75 years. Residing in the community participating in the study for a long time. No known history of lung cancer and has not undergone lung cancer screening in the past three months. Able to understand and willing to sign the informed consent form, and able to participate in long-term follow-up. 2. Exclusion Criteria Individuals diagnosed with lung cancer. Individuals with severe other health issues that make them unsuitable for CT imaging. Individuals unable to understand the study protocol or who cannot provide informed consent due to cognitive impairments. Individuals participating in other clinical trials that may affect the results of this study. Individuals unable to undergo follow-up.