Analysis of 8 CT module application protection test results in Tianjin

Objective: To understand the current status of CT module radiological protection in Tianjin, and to protect the health rights and interests of radiologists, patients, and the public. Methods: To analyze the radiation protection situation of the protection facilities, equipment and places of the CT module in 8 medical institutions in Tianjin by on-site investigation and detection. Results: The effective use area of the 8 CT module surveyed and tested is mostly around 15 m², and the minimum unilateral length is not more than 3 m; 3 to 5 mm lead shielding materials are used in the machine room; 8 machine rooms are equipped with personal protective equipment for the examinees. All are equipped with observation windows and door closing devices, with a configuration rate of 100%. 7 machine rooms are equipped with a power exhaust device, with a configuration rate of 87.5%; 6 machine rooms are equipped with a working status indicator light and door lamp linkage device, with a configuration rate of 75%. Only 4 machine rooms are equipped with ionizing radiation warning signs, and the configuration rate is 50%. The setting rate of the precautions for radiation protection is the lowest, 37.5%. The radiation protection tests of places and equipment all meet the standard requirements. Conclusion: The newly installed CT modules in our city are in good condition and basically meet the radiation protection safety and radiation protection standards on the whole. They can provide safety guarantee for radiological diagnosis and treatment activities in an emergency situations. The configuration of various radiation protection facilities should still be improved and the management should be strengthened in practical work. (authors)