RTsafe is a medical technology company that has developed a unique approach to quality assurance that significantly enhances the safety and accuracy of radiotherapy for cancer and other medical conditions. Our Vision Helping to create a world where every radiotherapy intervention is tested on a personalized phantom before the real patient, thus enhancing safety and effectiveness of treatment. We combine proven expertise in medical physics with highly accurate 3D printing technology to create pseudo‐in‐vivo dosimetry phantoms for end‐to‐end commissioning, benchmarking and patient‐specific quality assurance in SRS, IMRT, VMAT and SBRT applications. The anatomically accurate models enable medical professionals to plan more precise treatment interventions for each individual patient and help radiotherapy technology industry to fine‐tune its products. The result is more effective individualized therapy and reduced patient risk.