抄録
In recent years, computed tomography (CT)-guided interventional radiology (IVR) procedures, including lung biopsy, drainage, and radiofrequency ablation (RFA), have been increasingly performed due to their clinical effectiveness. During CT-guided procedures, both the operator and healthcare staff, such as nurses and clinical engineers, are exposed to radiation. However, though radiation exposure to the operator has been studied, little data exist on staff exposure.
This study aimed to assess real-time radiation exposure to both operators and healthcare staff during CT-guided IVR procedures using the RaySafe i3 system. The device recorded radiation dose rates every second, and video recordings were used to track staff positioning and movements. Data were analyzed for biopsies (33 cases), RFA (32 cases), and cryoablation (23 cases).
The results showed that cumulative radiation doses were the highest in cryoablation cases due to the longer procedure times. Nurses had higher dose rates when positioned near the patient’s head, especially when administering medication or providing care. Clinical engineers generally had lower exposure due to the use of protective barriers. In some cases, staff dose rates exceeded those of the operator. These findings highlight the need for enhanced radiation protection measures for healthcare staff in CT-guided IVR procedures.
