bjective? To expLore the effects of comprehensive nursing care on adverse reactions of contrast media in enhanced CT scan. Methods? From November to December 2016, we seLected 4 413 patients with enhanced CT scan in Cancer HospitaL of Peking Union MedicaL CoLLege. ALL of the patients were divided into controL group and observation group with the random number tabLe. There were 2 010 cases in controL group with routine nursing, whiLe there were 2 403 patients in observation group with comprehensive nursing. We observed the adverse reactions and satisfaction with nursing among patients with enhanced CT scan between two groups. ResuLts? The incidence of adverse reactions of observation group was Lower than that of controL group;the patients' satisfaction with nursing of observation group was higher than that of controL group; the differences were aLL statisticaL (P＜0.05). ConcLusions? Comprehensive nursing care can reduce the incidence of adverse reactions of contrast media and improve satisfaction with nursing among patients with enhanced CT scan.

Objective To explore the feasibility of quartz glass for radiotherapy dosimetry through the experimental study of the thermoluminescence characteristics of synthetic quartz glass. Methods The thermoluminescence glow curves of quartz glass under different annealing conditions were analyzed, the thermoluminescence characteristics of quartz glass were studied, and the measurement parameters were optimized. Using the Co-60 reference radiation field in the National Secondary Standard Dosimetry Laboratory, the quartz glass samples under different annealing conditions were irradiated following the dose levels of radiotherapy, i.e., 0.5, 1.0, 2.0, 4.0, 6.0, 8.0, and 10.0 Gy, respectively. According to the relationship between the absorbed dose of quartz glass and the relative thermoluminescence signal intensity, the linearity and dispersion of the dose response of quartz glass were obtained, and the feasibility of quartz glass for radiotherapy dosimetry was analyzed. Results The linear correlation coefficient of dose response of quartz glass under annealing condition of 430℃ for 10 min was 0.9984, and the dose response dispersion was 0.97% at the absorbed dose of 2 Gy. The linear correlation coefficient of dose response of quartz glass under annealing condition of 600℃ for 1 h was 0.9911, and the dose response dispersion was 1.4% at the absorbed dose of 2 Gy. Conclusion Preliminary results suggest that quartz glass with annealing condition of 430℃ for 10 min has the potential to be used for radiotherapy dosimetry.