RESUMO
Objective To investigate the quality control and quality assurance of the SPECT/CT system.Methods The energy peak,energy resolution capacity and the intrinsic uniformity of the device's detector were regularly examined, and the quality control was performed. Results The daily hardware maintain could reduce the rate of system's trouble. The device's energy peak,energy resolution capacity were consistent during half year's observation period. The two detector's intrinsic uniformity were better after calibration than before. [ detector Ⅰ: ( 2.71 ± 0.28 ) vs (2.37±0.11)(t=2.489,P<0. 05);detector Ⅱ:(2.68 ±0.12)vs(2.38 ±0. 19)(t =6.421,P <0.01) ] .Conclusion Regular quality control and maintain could keep the function stabilization,enhance the availability rate of the SPECT/CT system.
RESUMO
Objective To investigate the role of thyroid autoimmunity in chronic urticaria. Methods The thyroid function, anti-thyroid auto-antibodies, and relevant cytokines were detected by RIA and ELISA methods in 56 patients with chronic urticaria and 40 healthy controls. Results Serum thyroid-stimulating hormone (TSH), anti-thyroglobulin antibody (TG-Ab) and anti-thyromicrosome antibody (TMA ) levels were increased in 8, 5 and 7 cases, respectively, in 56 patients, which were significantly higher than those in healthy controls (P