Evaluation of an Autonomous Robotic System for Reducing Radiation Risk in a Real-World Cardiac Imaging Laboratory

Area of Science:

• Medical Imaging
• Radiological Protection
• Robotics in Healthcare

Background:

• Nuclear imaging is vital across medical disciplines.
• Occupational health for radiographers exposed to radiation remains a challenge.
• This study explores autonomous robots to mitigate radiographer radiation risk.

Purpose of the Study:

• To evaluate the effectiveness of autonomous robots in reducing radiographer radiation exposure.
• To provide a proof-of-concept for robot implementation in a Myocardial Perfusion Imaging (MPI) clinic.
• To assess the impact on occupational health and safety for radiographers.

Main Methods:

• An autonomous robot was integrated to deliver radiotracer doses.
• Eight radiographers utilized the robot in daily operations.
• Radiation exposure was measured using Thermoluminescent Dosimeters (TLDs) pre- and post-implementation.

Main Results:

• Mean bi-monthly radiation exposure decreased by approximately 27% post-robot implementation (0.67 mSv to 0.49 mSv).
• Bayesian analysis showed strong evidence (BF10 > 17) supporting the reduction in both skin and whole-body dose.
• The autonomous robot proved effective in reducing radiation exposure for radiographers.

Conclusions:

• Autonomous robots serve as a viable tool for managing radiographer radiation risk in MPI clinics.
• Technological advancements can enhance strategies for occupational radiation safety, adhering to ALARA principles.
• Future research should focus on the scalability and adaptability of these robots in various clinical settings.