On-Site Evaluation and Improvement Strategies of Radiation Occupational Hazard Prevention and Control Effectiveness in Medical Institution Construction Projects.

Abstract

Objective: To evaluate the control effectiveness of medical institution construction projects, and to summarize and analyze the radiation protection management status and improvement strategies of relevant medical institutions.

Methods: A total of 40 medical institutions in our city were evaluated for control effectiveness through measures such as data research, on-site investigations, equipment quality testing, and radiation health protection inspections.

Results: The compliance rates of personnel configuration, verification of protective measures, and radiation protection management and emergency response were 95.0%, 67.5%, and 70.0%, respectively. Compared to earlier evaluation periods (eg, before the implementation of new DR performance testing standards, where compliance rates were below 60%), there has been a marked improvement in compliance with performance and protection testing, particularly after the introduction of updated evaluation criteria. The first-pass rates of performance testing for DSA, DR, CT, and dental equipment were 100%, 84.0%, 92.0%, and 100%, respectively. The first-pass rates of radiation protection inspection for related equipment rooms were 100%, 100%, 92.0%, and 100%, respectively. New DR performance testing standards introduced specialized testing items, such as dark noise, detector dose indication (DDI), and signal transmission characteristics (STP), which presented initial challenges due to the unavailability of pre-processing images in some manufacturers' products. Additionally, higher monitoring values were identified at doors, door gaps, and cable penetration points in equipment rooms. Regarding radiation protection management and emergency response, issues such as overly rigid emergency response plans, insufficient personal dose management, and inadequate occupational health examinations remain, requiring systematic adjustments.

Conclusion: At present, the awareness of radiation hazard prevention and control in medical institutions has been improved. Compared to earlier periods of testing and evaluation, there has been a significant improvement in the degree of compliance with performance and protection testing. Medical institutions have strengthened equipment annual inspections, quality control, and other management work, further enhancing the level of radiation protection management.