Chemotherapy Combined With High-dose Radiotherapy for Low Rectal Cancer Using MR Guided Linear Accelerator

Radical radiotherapy boosting for low rectal cancer through magnetic resonance guided radiotherapy linear accelerator.

"For patients with AJCC stage II and III and age \< 72 years old, Capox ×6→capecitabine×2.~Detailed usage: Oxaliplatin 130mg/m2 (reduced to 100mg/m2 during concurrent chemoradiotherapy), intravenous administration, d1. Capecitabine 1000mg / m2, twice a day, d1-14. Repeated every 3 weeks.~For patients aged ≥ 72 years, or the competent physician judges that the patients cannot tolerate dual drug combined chemotherapy, capecitabine ×8 courses.~For patients with AJCC stage I, capecitabine ×4 courses."