Along with the progressing of micro-electronics technology and the improving of FPGA's performance, it's more and more common to process digital signals using FPGA. In most cases, FPGA is used to do the preprocessing or postprocessing besides processor in order to get a higher processing speed. This article introduces how to construct the signal processing unit of Doppler measurement system with FPGA and universal digital signal processor.

Based on the physical characteristic of ultrasound, the images of body tissues can be obtained through ultrasonic medical technology, which is another flourishing cross-linked branch of BME after X ray technology. Being non-invasive, painless and reusable, ultrasonic medical technology is suitable for the examination and treatment of the soft tissue. This paper introduces such of ultrasonic technology as its basic principle, developing prospect and application to clinical medicine.

In the field of medical engineering, ultrasonic Doppler technology develops rapidly and gains wide application. MICS-51 is one of the main series of MCU family and has been widely used in China. In this paper, the ultrasound Doppler error detection equipment based on MCS-51 is introduced.

For a large-scale hospital, management of medical equipment is very important for its economic benefit and development. This paper discusses the implementation of informatization, supermarketization and automatization for medical equipment inventory management with computer network technology.

Based on the construction experiences of our hospital, we in this paper introduce some problems met with in the central gas-supply, and meanwhile we have presented several solutions and preventive measures for the reference of other hospitals.
Delivery of Health Care ; organization & administration ; Equipment Safety ; Equipment and Supplies, Hospital ; Gases ; economics ; supply & distribution ; Maintenance ; Oxygen ; economics ; supply & distribution ; Oxygen Inhalation Therapy ; instrumentation

Conventional digital video acquisition card can only collect but not process video frequency.This paper introduces the design of a digital video acquisition card based on C6000 DSP chip of TI company,which can process digital video automatically and communicate with mainframe through PCI interface.

Background Research showed that the morbidity rate of primary angle closure glaucoma (PACG) in Mongolian population is 3.02 times more than Han nationality population.To understand the cause and mechanism of PACG in Mongolia is of an important significance.Objective This study was to investigate the pathogenesis of Mongolian PACG.Methods Thirty-two eyes of 32 PACG patients in Mongolia and 40 eyes of 40 PACG patients of Han peoples were included in Inner Mongolia Autonomous Region People's Hospital according to the diagnosis criteria of glaucoma group of Chinese Medical Ophthalmology Association (version 1987),and 13 eyes of 13 normal Mongolia and 17 eyes of 17 normal Han peoples who suffered with ocular truma were recruited as controls.Intraocular pressure(IOP) was measured before surgery.The trabecular meshwork tissue was obtained from all the eyes during the operation.Annexinv-FITC/PI double staining was performed and the apoptosis rate of trabecula cells was tested with flow cytometry.Written informed consent was obtained initial of the study.Results The IOP value in Mongolia PACG group,Han PACG group,Mengolia normal group and Han normal group was (35.97±7.11)mmHg,(38.70± 6.82) mmHg,(14.69 ± 2.91) mmHg and (13.59 ± 2.91) mmHg,respectively,showing a significant difference among the 4 groups(F=106.144,P=0.000),and the IOP was significantly higher in the Mengolia PACG group and Han PACG group than the normal groups(P＜0.05).The apoptosis rate of the cells was (7.14±0.67)％,(5.40±0.69) ％,(5.86±0.91) ％ and(2.29±0.65) ％ in the Mongolia PACG group,Han PACG group,Mongolia normal group and Han normal group,respectively,with a significant difference among them (F =174.888,P =0.000),and apoptosis rate of the Mongolia PACG group was significantly higher than that of the Han PACG group and the Mongolia normal group (P＜0.05).No significant difference was found between the Mongolia PACG group and the Han PACG group or between the Mongolia normal group and Han normal group (P＞0.05).The cell apoptosis rate was increased with the elevation of IOP (b =0.990,F=10.209,P =0.009) with the regression equition Y =2.788 +0.092X.Conclusions The apoptosis rate of trabecula cells in Mongolian is higher than Han people.If these results are associated with the high incidence of Mengolia PACG is worth of study.

Objective To observe the effects of five flavonoids include rutin(RU),dihydromyricetin(DMY),hesperetin(HP),daidzein(DA)and hydroxysaffor yellow A(HYSA)on myocardiocyte apoptosis induced by H2O2 and to explore their relationships with Keshan disease and the possible mechanism.Methods Primary cultured cardiocytes of neonatal rats were randomly divided into control group,model group,and flavonoids preincubation group.The cardiocyte apoptosis was examined by fluorescent staining,the rates of apoptosis were detected by flow cytometry,the expression of Bcl-2 family proteins associated with apoptosis were observed:by Western blot.Results Compared with model group[(24.33±6.51)%],RU[(13.95±3.80)%],DA[(11.82±3.50)%],HYSA[(12.33±3.78)%]could decreased the rate of apoptosis(P＜0.05).The five flavonoids could up-regulate Bcl-2 expression,down-regulate Bax expression,and increase the Bcl-2/Bax ratio[RU(0.989±0.094),DMY(0.931±0.280),HP(0.980±0.095),DA(1.049±0.092),HYSA(1.031±0.039),vs model(0.490±0.046),the difference had statistical significances(P＜0.05)],but the Bcl-xl did not significantly changed(P＞0.05).Conclusions RU,DMY,HP,DA and HYSA have antiapoptotic effects on cardiomyocyte via regulating Bcl-2 and Bax,which gives us a hint in prevention and treatment of Keshan disease.

BACKGROUND:Fibrin glue introduced into calcium phosphate cement has not been confirmed whether this way could overcome the compressive limits and the low degradation of calcium phosphate cement and to modify the biological properties of calcium phosphate cement. OBJECTIVE:To explore the mechanical and biological properties of calcium phosphate cement/fibrin glue at different powder/liquid ratio for bone regeneration in vitro. METHODS:Calcium phosphate cement and fibrin glue were mixed at ratios of 1:1, 3:1, 5:1 (mL/g), and the pure calcium phosphate cement served as controls. Setting time, scanning electron microscope and the biomechanical test were used to analyze the composite scaffold structure, physical performance and the mechanical properties. Passage 3 osteoblasts were respectively inoculated on the material surface of the four groups, and pure cells served as blank controls. celladhesion, proliferation and alkaline phosphatase activity were observed. RESULTS AND CONCLUSION:The initial and final setting time of calcium phosphate cement/fibrin glue at 1:1 and 3:1 (mL/g) was higher than that in the control group (P<0.05), while the initial and final setting time of calcium phosphate cement/fibrin glue at 5:1 (mL/g) was lower than that of the control group (P<0.05). Scanning electron microscope showed smoother and denser surface of composite scaffolds compared with the pure calcium phosphate cement. The aperture of the composite scaffolds was decreased with the increasing concentration of fibrin glue. The compressive strength of composite scaffolds at 3:1 and 5:1 was higher than that of the control group (P<0.05), while the modulus of the composite scaffolds at 1:1, 3:1, 5:1 was higher than that of the control group (P<0.05). celladhesion, proliferation and alkaline phosphatase activity showed no difference among the three composite scaffold and control groups, but al higher than the blank control group (P<0.05). These findings indicate that fibrin glue introduced into calcium phosphate cement can overcome the low-strength limits of calcium phosphate cement, and maintain the good biological properties of calcium phosphate cement for bone regeneration.

Objective To evaluate the value of increased threshold of SUVmax and delayed imaging on diluted and filled bladder for improving the detection of bladder cancer with 18F-FDG PET/CT.Methods From July 2007 to October 2012,18 F-FDG PET/CT was performed on 63 suspected or treated (with bladder preserved) bladder cancer patients (55 males,8 females,average age 69.1 years).After routine imaging,all patients were given 1 500-2 000 ml of water orally three times and voided three times.Then they underwent delayed pelvic imaging at a full bladder status.The routine images were reanalyzed with increased SUVmax threshold (from 6-8 to 8-20).The final diagnosis was confirmed by pathology or follow-up (＞6 months).The differences of SUVmax in urine,18 F-FDG metabolism in lesions between routine and delayed imaging were compared.Paired t test was used to compare their differences.Results The SUVmax of urine on routine and delayed imaging was 15.11±11.11 and 4.73±2.00 respectively (t=4.15,P＜0.01).Among the 63 patients,there were 15 malignant and 3 benign cases confirmed by pathology,and 45 patients without obvious abnormality during follow-up.All 18 cases were detected by 18F-FDG PET/CT including the 3 benign false positive cases (2 were positive by CT though negative by PET,and 1 FDG-avid cystitis).All 15 true positive cases were confirmed as primary or recurrent bladder carcinoma and 1 false positive case as inflammation.The detection rates of early imaging with routine and increased display threshold of SUVmax were 18.8％(3/16) and 43.8％(7/16),respectively.Conclusion Increased SUVmax threshold for display and delayed imaging with diluted urine under full bladder status could effectively improve the detection rate of primary or recurrent bladder cancer with 18F-FDG PET/CT.