RTsafe Holding is a medical technology company specializing in 3D-printed dosimetry phantoms. It offers a PseudoPatient personalized care solution for brain tumor patients, a phantom Prime that enables 3D gel dosimetry measurements, a single-use head phantom Encephalon 3D, and an anthropomorphic 3D-printed SBRT and Spine phantoms. The company also provides remote dosimetry and preparation for ISRS certification services.