Efficacy of a Self-Efficacy Nursing Model in CyberKnife-Treated Lung Cancer Patients

Inclusion Criteria: * Aged between 40 and 80 years, inclusive. * Histologically or cytologically confirmed diagnosis of primary lung cancer (suitable for CyberKnife treatment). * Scheduled to receive CyberKnife stereotactic radiosurgery as a primary or palliative treatment. * Karnofsky Performance Status (KPS) score of 80-100. * Patient-Generated Subjective Global Assessment (PG-SGA) score ≤ 5. * Estimated life expectancy of at least 6 months. * Able to understand, speak, and read Mandarin Chinese. * Willing and able to provide written informed consent. Exclusion Criteria: * Presence of severe, uncontrolled cardiovascular, cerebrovascular, respiratory, hepatic, or renal diseases. * Known history of severe psychiatric disorders or cognitive impairment. * Presence of other active malignancies requiring systemic treatment. * Known severe, uncontrolled endocrine or metabolic diseases. * Significant coagulation disorders. * Previous radiotherapy to the planned CyberKnife treatment field. * Participation in another interventional clinical trial concurrently or within 30 days prior to enrollment.