Objective To evaluate the efficacy of different methods of biliary stenting for intractable choledocholithiasis.Methods A total of 137 patients with intractable choledocholithiasis were randomly divided into 4 groups to receive different managements.The treatments included single biliary stent placement in group A (n=32),single stent placement plus oral medication in group B (n=35),double stents placement in group C (n=33) and double stents placements plus oral medication in group D (n=37).All biliary stents were placed via endoscopic retrograde cholangiopancreatography (ERCP).Oral medication included ursodeoxycholic acid and/or anethol trithione after the procedure.All patients were closely followed up.Results The size of stones in common bile duct (CBD) decreased in all cases at 3 months after stent placement,with most significant changes in groups C and D than in groups A and B (P＜0.05).The stents kept unobstructed for a mean time of 7.6 months (3.5-20 months),with a significant difference between every 2 groups (P＜0.05) and a longest duration time in group D.A second procedure of ERCP was performed in 72 patients (52.6%),with achievement of total choledocholithiasis clearance in 51 (84.7%).Hyperamylasemia (HA) occurred in 41 cases (29.9%),which were mainly observed in the groups C and D (P ＜0.05).Conclusion Biliary stent placement is a safe and effective palliative therapy for intractable choledocholithiasis,while double stents placements combined with pharmacotherapy is most effective.

Based on LCD Module and Visual C++ development environment, this paper proposes a new method which can quickly develop the human-machine interface .We define a LCD module programming interface by designing Serial Communication Class(SCS). On this basis,we achieve the transplantation on an Embedded ARM Platform to fulfil the requirements of Medical Diagnostic Instruments (MDI). Experimental results show that this method has advantages of short development cycle and high level transplantation which has broad application prospects in the field of Medical Diagnosis Instrument.
Diagnosis, Computer-Assisted ; instrumentation ; Equipment Design ; Liquid Crystals ; Robotics ; instrumentation ; methods ; Software ; User-Computer Interface

Developing an acoustic radiation force excitation module including 64 channels based in FPGA for ultrasound elastography. The circuit of the module was drived in bipolar, and the parameters such as excitation frequency, pulse repetition frequency, pulse number, element number and focus depth were ajustable. The acoustic field for special parameter was experimented with OptiSon laser acoustic field system with a result which reflects the width of focal spot is about 3 mm. The acoustic power was experimented with RFB2000 radiation force balance with a result which reflects acoustic power is increasing linearly with the number of pulses and the number of elements, and is increasing squarely with the peak-to-peak value of excitation voltage. The module is promising in factual application which can be triggered external y in synchronously, and can be combined with B-mode ultrasound system for ultrasound elastograpy.

Developing an acoustic radiation force excitation module including 64 channels based in FPGA for ultrasound elastography. The circuit of the module was derived in bipolar, and the parameters such as excitation frequency, pulse repetition frequency, pulse number, element number and focus depth were adjustable. The acoustic field for special parameter was experimented with OptiSon laser acoustic field system with a result which reflects the width of focal spot is about 3 mm. The acoustic power was experimented with RFB2000 radiation force balance with a result which reflects acoustic power is increasing linearly with the number of pulses and the number of elements, and is increasing squarely with the peak-to-peak value of excitation voltage. The module is promising in factual application which can be triggered externally in synchronously, and can be combined with B-mode ultrasound system for ultrasound elastography.
Acoustics ; Elasticity Imaging Techniques ; Ultrasonics

From 1987 to 2017, cardiovascular disease (CVD) had been ranking the first cause of death in Suzhou, and the mortality rate showed an upward trend annual percentage changes (APC=0.62%, P=0.001), while the standardized mortality rate showed a downward trend (APC=-2.65%, P<0.001). The probability of premature death of CVD declined consistently from 7.06% in 1987 to 2.00% in 2017 (APC=-4.45%, P<0.001). When the life expectancy was set at 70, the potential years of life lost rate (PYLLR) decreased from 6.35‰ in 1987 to 3.30‰ in 2017, and the standardized PYLLR decreased from 7.30‰ to 2.68‰. When the life expectancy was set at 75, the PYLLR decreased from 10.12‰ to 5.19‰, and the standardized PYLLR decreased from 11.44‰ to 3.88‰. With the increase of years, all PYLLR and standardized PYLLR showed a significantly downward trend (APC=-2.51%--3.89%, P<0.001).