Objective:To study the quality control management method of magnetic resonance equipment based on multi-constraint optimal programming model,and to improve the utilization efficiency and imaging effect of magnetic resonance imaging(MRI)equipment.Methods:By gridding the current carrying area of the superconducting magnet of magnetic resonance equipment,the total length of the superconducting material was calculated,and the optimal programming model of the magnetic resonance superconducting magnet was established with constraints set.The optimal programming results of the superconducting magnet was obtained by solving the model to achieve quality control of the magnetic resonance equipment.Taking the minimum scanning time of magnetic resonance equipment as the objective function,a refined management model of magnetic resonance equipment was established to realize the time planning for the use of magnetic resonance equipment.Using fuzzy set theory,the six magnetic resonance equipment in clinical use in Lishui Branch of Zhongda Hospital Southeast University from 2022 to 2023 was divided into five grades according to the imaging quality of magnetic resonance equipment,including excellent,good,average,below average and poor.The quality control management effect was evaluated from the uniformity of the superconducting magnet imaging magnetic field,the uniformity of 10 magnetic resonance images,the geometric distortion rate,and the total number of monthly scans.Results:After the implementation of the quality control management method for magnetic resonance equipment based on the multi-constraint optimal programming model,the maximum value of the magnetic field uniformity contour of the tested equipment was reduced from 15 ppm to 5 ppm;the uniformity test results of the 10 collected magnetic resonance images showed that 2 were good and 8 were excellent,all of which met the technical standards of magnetic resonance imaging;the mean value of geometric distortion rate of magnetic resonance imaging was at-0.5%～0,and the corresponding test grade was excellent;the number of monthly scans of the human body by the tested magnetic resonance equipment was higher than that before the quality control management,especially the number of lower limb scans increased from 607 times before the quality control management to 821 times,with an increase of 214 times.Conclusion:The quality control management method for magnetic resonance equipment based on multi-constraint optimal programming model can effectively improve the quality and control management level of magnetic resonance equipment,optimize the maintenance and management process of magnetic resonance equipment,improve equipment operation efficiency,and reduce operating costs.

Objective:To construct a safety risk management model for rehabilitation equipment of hospital,in order to improve the standardization and efficiency of rehabilitation equipment management. Methods:Based on the entropy weight method (EWM) and grey relational analysis (GRA),a safety risk management model for rehabilitation equipment of hospital from the aspects of personnel factors,equipment factors,environmental factors,and management factors was established. A total of 18 rehabilitation equipment,which were used in clinically practice at the Lishui Branch of Zhongda Hospital Southeast University from 2022 to 2023,were selected. The rehabilitation equipment management in 2022 adopted the conventional equipment management process,while the equipment management in 2023 adopted the risk management theory based on the EWM-GRA safety risk management model for rehabilitation equipment (model management in brief) of hospital. The differences in the efficiency of usage,quality control,maintenance,and repair scores of rehabilitation equipment between the two management methods were compared. Results:The scores for the efficiencies of usage,quality control,maintenance,and repair management of rehabilitation equipment by using model management were (94.86±3.84) points,(81.87±5.24) points,(77.85±5.96) points,and (80.36±3.45) points,respectively,all of which were higher than those of conventional management methods,and the differences were statistically significant (t=57.522,45.82,19.284,22.511,P<0.05),respectively. Conclusion:The risk management model based on EWM-GRA for rehabilitation equipment management of hospital can reduce the frequency of equipment maintenance,improve the quality of equipment operation,and enhance the efficiency of equipment utilization when these equipment were applied in rehabilitation equipment management.

Objective:To construct a safety risk management model for rehabilitation equipment of hospital,in order to improve the standardization and efficiency of rehabilitation equipment management. Methods:Based on the entropy weight method (EWM) and grey relational analysis (GRA),a safety risk management model for rehabilitation equipment of hospital from the aspects of personnel factors,equipment factors,environmental factors,and management factors was established. A total of 18 rehabilitation equipment,which were used in clinically practice at the Lishui Branch of Zhongda Hospital Southeast University from 2022 to 2023,were selected. The rehabilitation equipment management in 2022 adopted the conventional equipment management process,while the equipment management in 2023 adopted the risk management theory based on the EWM-GRA safety risk management model for rehabilitation equipment (model management in brief) of hospital. The differences in the efficiency of usage,quality control,maintenance,and repair scores of rehabilitation equipment between the two management methods were compared. Results:The scores for the efficiencies of usage,quality control,maintenance,and repair management of rehabilitation equipment by using model management were (94.86±3.84) points,(81.87±5.24) points,(77.85±5.96) points,and (80.36±3.45) points,respectively,all of which were higher than those of conventional management methods,and the differences were statistically significant (t=57.522,45.82,19.284,22.511,P<0.05),respectively. Conclusion:The risk management model based on EWM-GRA for rehabilitation equipment management of hospital can reduce the frequency of equipment maintenance,improve the quality of equipment operation,and enhance the efficiency of equipment utilization when these equipment were applied in rehabilitation equipment management.