The integration of magnetic resonance imaging with linear accelerator technology (MR-Linac) has transformed radiotherapy practice by enabling superior soft-tissue visualization and online adaptive planning. Compared with conventional Linac systems, which rely on CT-based simulation and cone-beam CT (CBCT) for setup verification, the MR-Linac allows real-time imaging and plan modification based on daily anatomical changes. This evolution has significantly influenced the workflow and clinical responsibilities of radiation therapists.