keywords Brachytherapy DOSE-RATE BRACHYTHERAPY EXTERNAL-BEAM RADIOTHERAPY INTRALUMINAL RADIOTHERAPY IRRADIATION LOCAL-CONTROL Life Sciences & Biomedicine Oncology PALLIATIVE TREATMENT QUALITY-OF-LIFE RANDOMIZED-TRIAL RATE ENDOBRONCHIAL BRACHYTHERAPY SYMPTOM PALLIATION Science & Technology high-dose rate (HDR) lung cancer non-small cell lung cancer (NSCLC)