Radiation dose and shielding considerations for digital dynamic radiography (DDR) compared to mobile C‐arms

DDR systems provide portable dynamic imaging capabilities but deliver substantially higher radiation output than conventional mobile C-arms. In addition, scatter dose rates from DDR were approximately 1.5-3 times higher than those from a conventional mobile C-arm under comparable conditions. This elevated dose, driven by high tube currents and long pulse durations, raises important safety concerns for patients, personnel, and shielding infrastructure. While DDR offers potential clinical value in motion-sensitive applications, its safe integration into practice requires careful protocol selection, attention to scatter exposure, and thoughtful shielding planning of exam rooms where the system will be used. As DDR systems become more prevalent and approach fluoroscopic performance, regulatory and design guidance may need to evolve to reflect their unique operational profile.