Investigation and control strategy on the quality control of apparatus of radio diagnosis and radiotherapy in Guangxi

Objective: To provide scientific basis for improving the qualified rate of equipment performance, through understanding the qualified situation on quality control of medical radiative diagnostic equipment in Guangxi, and exploring the reasons of the unqualified equipment performance and control strategy. Methods: The quality control testing of 467 medical radiative diagnostic equipment from 111 hospitals in Guangxi were carried out, according to test specifications on quality control of the relevant national standards. Chi-square test was used to the qualified rate in the different apparatus of radio diagnosis and radiotherapy. Results: The qualified rate on the quality control of medical radiative diagnostic equipment in Guangxi was 80.51%. The qualified rate on quality control of X-ray imaging diagnosis, radiative treatment, and nuclear medical equipment were 81.6%(346/424), 81.6% (28/37) and 33.33% (2/6), respectively. The qualified rate on quality control of nuclear medical equipment is lower than the X-ray imaging diagnosis and radiotherapy equipment (P < 0.05). The reason on the unqualified quality control of DR and X-ray imaging equipment was that the quadrilateral deviation of the light field and radiation field was substandard. The mam reasons of the unqualified CT, SPECT, medical electron accelerator and afterloader were that CT value linear, inherent inhomogeneity, calibration point absorption dose and source precision detection was substandard, respectively. Conclusion: The qualified rate on the quality control of medical radiative diagnostic equipment in Guangxi is low, and the quality control test for unqualified equipment should be improved further. (authors)