Innovating Radiation Therapy Training with Virtual Reality: A Comprehensive Dive

Abstract

Traditional radiation therapy training depends on supervised access to clinical linear accelerators (LINACs), static instructional media, and opportunistic observation in busy treatment environments. Although this model remains common, it is increasingly constrained by limited machine time, the high capital cost of radiotherapy infrastructure, competing patient care demands, and the need to protect both patients and novice trainees from avoidable setup and workflow errors. These pressures are especially acute in radiation oncology, where safe task execution depends on a combination of conceptual knowledge, spatial understanding, workflow fluency, safety awareness, and confidence calibrated to actual performance. Immersive virtual reality (VR) offers a potentially scalable alternative because it can reproduce treatment-room workflows in a safe, repeatable, and spatially faithful environment without requiring access to a physical bunker. This integrated manuscript synthesizes three related studies into a single unified paper that addresses three research questions within one experimental program. Research Question 1 examined whether immersive VR improves skill acquisition and competency development relative to traditional two-dimensional (2D) instruction. Research Question 2 examined whether VR enhances confidence and preparedness for real-world clinical scenarios. Research Question 3 examined how effectively immersive VR training translates to precise and reliable hands-on clinical performance, and how learners perceive the usability of the VR experience that supports or constrains such translation. Across all three questions, the study used a randomized, single-blinded comparative design in which sixty-six participants were allocated to either a 3D VR cohort (n = 40) or a traditional 2D cohort (n = 26). Training addressed two identical clinical use cases: an automated dry run involving basic LINAC functions and a collision reset protocol. Transfer of learning was evaluated during hands-on performance on a physical LINAC. A triangulated outcome framework was used to evaluate learning across cognitive, procedural, psychological, and systems-level domains. Measures included randomized pre-, post-, and retention knowledge assessments; binary procedural checklists; blinded expert global ratings; task completion time; observable error counts; Likert-scale training effectiveness items; and open-ended usability feedback. The integrated findings show a highly consistent pattern favoring immersive VR. Compared with traditional 2D instruction, VR-trained participants demonstrated larger gains in knowledge acquisition and retention, stronger procedural checklist performance, higher expert-rated competence, faster completion of clinical tasks, fewer observable errors, and substantially stronger self-reported confidence and preparedness. The benefits of VR were especially pronounced for spatially complex and safety-critical steps such as isocenter setup, gantry motion, protective stop handling, and collision reset. Delayed assessment further suggested that the advantages of immersive training were not merely short-term or novelty driven, but sufficiently durable to support retention and more stable execution over time. Taken together, the combined results indicate that immersive VR is not simply an engaging educational adjunct. Rather, it functions as a rigorous instructional modality that supports deeper encoding of procedural knowledge, stronger transfer from training to real equipment, more calibrated confidence, and more reliable clinical performance. By reducing reliance on scarce and expensive clinical infrastructure while preserving contextual realism, immersive VR offers a scalable pathway for radiation therapy education, onboarding, rehearsal, and ongoing competency development. Key terms – Virtual Reality, Radiation Therapy, Cognitive load, skill acquisition, Linear Accelerators, Immersive learnings