ABSTRACT
Objective To explore the effects of low-dose CT scan on diagnostic quality of images and the radiation dose to the lens.Methods 60 cases were scanned in axial orientation at different mA.Lens radiation dose was measured and image quality was evaluated.Results Image quality score of group A was(11.2 ± 0.7)points,higher than the group C(4.9 ± 1.8)points(t =12.634,P ＜0.05),and score difference of group B(10.6 ± 1.1)was significantly different(P ＞ 0.05).CTDIvol of group A,group B and group C were 18.32mGy,7.63mGy and 4.58mGy,group B,group C and group A difference was statistically significant(t =15.625 and 14.037,P ＜ 0.05).Group B and C groups difference was not statistically significant(P ＞ 0.05).Conclusion Low dose CT scanning(50mA)in orbit not only could assure the image quality,but also decrease the radiation dose.
ABSTRACT
Objective: To investigate the CE fingerprint of Salvia miltiorrhiza . Methods : Separation was performed on a 50?m?50cm uncoated capillary with 20mmol?L -1 borate solution as CE buffer. The run voltage was 15kV and the UV detection was set at 210nm. Results : Fingerprint consisted of 11 common peaks. The validation of methods meet the requirements for SDA's technical regulations. Conclusion : The method was accurate and simple for quality control of Salvia miltiorrhiza.