Presentation Information
[8p-N302-6]Frontiers of Medical Radiation Protection: International Recommendations, Dose Optimization, and Digital Twin Dose Tracking
〇Toshioh Fujibuchi1 (1.Kyushu Univ.)
Keywords:
Medical radiation protection,Dose optimization,Digital twin
The growing use of radiation in diagnosis and interventional procedures makes reducing both patient (medical) and staff (occupational) exposure a key challenge. Protection follows the ICRP principles of justification, optimization, and dose limitation, and recommendations have evolved: the eye-lens dose limit was lowered (Publ. 118; 20 mSv/y in Japan since 2021), interventional protection was systematized (Publ. 139), and the 2007 Recommendations (Publ. 103) are under review. For occupational protection, we developed tools (e.g., X-SERVE) visualizing Monte Carlo 3D scattered-dose distributions via XR and body tracking, plus 3D-printed models. For medical exposure, ICRP Publ. 154 (2023) and 160 (2024) guide optimization in digital radiography, fluoroscopy, and CT, countering dose creep through image-quality/dose balance and diagnostic reference levels. Patient digital twins combine dose-management data with Monte Carlo organ-dose estimation to track exposure, though real-time capture of patient body shape remains a major challenge.