ABSTRACT
Objective To provide scientific data for the study of tumor prevalence among medical X-ray workers. Methods In a cohort study, radiation exposure and tumor occurrence were collected from medical X-ray workers and normal persons (control) in Chongqing, China. SPSS 24 software was used to calculate the incidence density of tumor in the follow-up cohort, as well as the relative risk (RR) and 95% confidence interval of various malignant tumors. Results A total of 934 subjects were followed up. By the end of the investigation, 109 cases of malignant tumor were recorded. Compared with the control group, the RRs of liver cancer and colorectal cancer were both 3.4. Dose-specific RR was calculated for the worker groups. Compared with the two groups with < 80 mGy and 80～200 mGy cumulative doses, the group with > 200 mGy cumulative dose showed 2.05 and 2.1 RRs for solid cancer, and 1.89 and 2.17 RRs for whole cancer, respectively. Conclusion The risk of liver cancer and colorectal cancer is higher for medical X-ray workers in Chongqing, and the risk of solid cancer and whole cancer is higher in the high cumulative dose group. Therefore, radiation workers should pay attention to the optimization of protection.
ABSTRACT
The use of computed tomography (CT) in emergency departments has increased over several decades, as physicians increasingly depend on imaging for diagnoses. Patients and medical personnel are put at risk due to frequent exposure to and higher levels of radiation, with very little evidence of improvements in outcomes. Here, we explore why CT imaging has a tendency to be overused in emergency departments and the obstacles that medical personnel face in ensuring patient safety. The solution requires cooperation from all emergency care stakeholders as well as the continuous education of doctors on how CT scans help in particular cases.
Subject(s)
Humans , Diagnosis , Education , Emergencies , Emergency Medical Services , Emergency Medicine , Emergency Service, Hospital , Patient Safety , Private Practice , Radiation, Ionizing , Risk Assessment , Tomography, X-Ray ComputedABSTRACT
Objective To explore the X-ray radiation dose to patients from different cardiovascular interventional procedures and analyze the dose-affecting factors.Methods In accordance with the A,B,C operators,442 patients undergoing cardiovascular interventional procedures were collected,including single coronary angiography (CAG),percutaneous coronary intervention ( PCI ),radiofrequency catheter ablation (RFCA),congenital heart disease intervention (CHD) and permanent cardiac pacemaker implantation (PCPI),to observe dose area product (DAP),cumulative radiation dose (CD),fluoroscopy time.Results CD values of patients in groups of CAG,PCI,RFCA,CHD,PCPI were (0.34 ±0.23),(1.33 ±0.76),(0.71 ±0.43),(0.27 ±0.22) and (0.92±0.42) Gy and DAP values were (34.18 ±23.33),(135.92 ±81.14),(79.79 ±50.66),(27.93 ±23.66),and (94.60 ±48.11 ) Gy·cm2,respectively.Fluoroscopy time were (4.82 ±3.73),( 16.64 ±9.01 ),( 17.04 ± 15.29),(9.60 ±5.97)and (7.31 ±6.45) min.DAP values and fluoroscopy time were highly correlated (r =0.84,P ＜ 0.05 ).Conclusions There is significant difference in radiation dose for cardiovascular interventional procedures.Radiation dose and fluoroscopy time are directly related to surgeons' proficiency in operations.Improvement of operation proficiency should be carried out to reduce the patients' radiation dose.