Initial Assessment Tool: Chest X-Ray

Target Audience: Individuals who are already experiencing symptoms

Functions and Limitations: A Chest X-ray can provide an initial look at whether there are abnormal shadows or nodules in the lungs; it is the most common first-line clinical examination. However, its sensitivity is relatively limited for detecting smaller or early-stage lung cancers. If a doctor suspects a risk of lung cancer or requires a more precise evaluation, they will arrange further imaging tests (such as a Low-Dose Computed Tomography).

Early Screening Standard: Low-Dose Computed Tomography (LDCT)

Target Audience: High-risk individuals who have not yet developed symptoms

Advantages and Process: This method utilizes low-dose radiation technology to capture three-dimensional (3D) images of the lungs, effectively detecting minute early-stage lesions. The process takes only a few minutes; participants simply need to lie still, no anesthesia or contrast agent injections are required. If the scan reveals suspicious lesions, the doctor will arrange further examinations as needed (such as a biopsy or PET-CT scan) to confirm the diagnosis and determine the stage of the disease.