ABSTRACT
Objective To investigate the enhancement of color Doppler signals in lower limb arteries by intravenous ultrasound contrast agent.Methods Nineteen cases examined were divided into two groups: Group I consisted of 13 normal cases; group II 6 cases with lower limb artery diseases. The contrast agents were administrated through forearm veins.Results The color Doppler signals and flow width were all increased in normal lower limb arteries after the contrast agent was injected. No color Doppler signals were showed in 4 closed femoral arteries (FA) and popliteal arteries(PA) after enhancement of contrast agent, but the color flow were seen in 3 anterior tibial arteries (ATA) and 1 posterior tibial artery (PTA), which came from lateral vessels in the near end of ATA and PTA. In another 2 cases, a few color Doppler signals were showed in ATA and PTA before contrast admitted, but the color Doppler signals were increased and local color defect were presented after contrast admitted, in which the stenosis of arteries were confirmed by angiography.Conclusions Intravenous ultrasound contrast agent could give rise color Doppler signals in lower limb arteries, and help to make lower limb artery disease diagnosis to a more accurate extent.
ABSTRACT
Objective To determine the content of the heavy metal Cadmium(Cd)in Changtong oral liquid.Methods Inductively coupled plasma mass spectrometry(ICP -MS )was used.Results The calibration curve was linear in t he range of 0.0025～0.0125?g /mL for Cd(r=0.9997).The average recovery of the heavy me tal element of Cd was99.37%(n=5,RSD =2.73%).Conclusion This method is simple,accurate and e ffective.It can be used for the quality control of Changtong oral li quid.
ABSTRACT
AIM: To determine the content of ferulic acid and rhein in Shengfaling Tincture(Radix Angelicae Sinensis,Flos Carthami,Radix Polygoni Multiflori,ect.). METHODS:HPCE was used.The best condition was obtained with a fuse dsilca capillary tube (60 cm?75 ?m,effective length of 53 cm),30 mmol?L -1 sodium tetraborate electrophoretic buffer(pH 8.2),at a constant voltage of 12 kV and temperature at 25 ?C .The UV detection wavelength was at 313 nm and caffeic acid was adopted as internal standard. RESULTS:The calibration curves was linear in the range of 2.4-12 ?g?mL -1 for ferulic acid(r=0.999 7) and 1.6-8 ?g?mL -1 for rhein (r= 0.999 6 ),respectively.The average recovery of ferulic acid was 99.06% and that of rhein was 98.94%. CONCLUSION: This method is simple,quick and sensitive.