Surface guidance is increasingly utilized in radiation oncology to align patients and track motion during treatment. However, most current systems have significant cost. This paper describes the development of an SGRT application that uses light detection and ranging (LiDAR) sensors built into smartphones. The system used an iPhone and an iPad to achieve temporal resolution (4-5 Hz) and static and dynamic accuracy comparable to that seen in current clinical systems. | Capaldi, Adv Radiat Oncol 2025
