Microtox technology is one of quick toxicity test methods for determining the poisonous or toxic substances in the environment by luminous bacteria as a indicator organism.This paper reviewed the appearance and development of microtox technology.Besides,we expounded the methods and stepwise technique map and addressed key questions of microtox technology for the evaluation of the comprehensive toxicity of Chinese medicinal materials.In conclusion,microtox technology is a promising method from a vantage point of the toxicity detection of Chinese medicinal materials.

DICOM is a standard for data format and transmission of digital medical image. DICOM Data Set is a binary data stream using DICOM encoding rule. DICOM Nesting Data Set is a kind of complex Data Set with a tree structure, and is widely used in DICOM services and encoding of DICOM files for its special structure. In this article, the functions and encoding rule of Data Set and Nesting Data Set in DICOM format are presented, and the way of parsing and organizing of them is put forward. The realization method and practical application are also discussed.

Objective To establish a method for recognizing nasal bleeding sites and hemorrhagic foci of hidden epistaxis.Methods The bleeding sites and hemorrhagic foci,as well as the used surgical techniques and the curative effects were studied retrospectively in 122 patients with spistaxis from Jan.2005 to Oct.2007,in whom the bleeding sites and hemorrhagic foci were not found by routine nasoscope examination.Under nasal endoscopic monitoring,electric heat cauterization(EHC),microwave coagulation(MC) and micro-traumatic nasal packing(MTNP) were applied respectively to treat the hidden epistaxis.Results The hemorrhagic foci were found in the following sites:Olfactory cleft 48 cases(39.3%),superior wall of inferior nasal meatus 20 cases(16.4%),posteroinferior wall of middle nasal meatus 6 cases(4.9%) and so on.Epistaxis was well controlled in 113 of 122 cases(92.6%),in whom the hemorrhagic foci were found by endoscope,by laser soldering,MC and EHC.Packing with mini gel foam was used in 9 cases,for whom the hemorrhagic foci were not found.No complications occurred during a 1-2 months of follow up after treatment.Of the 122 cases,106 cases(86.9%) stopped bleeding by treatment once and 16 cases(13.1%) stopped by treatment twice.Conclusion The lateral or posterior area of middle and inferior nasal meatus,and olfactory cleft area are the frequent sites of hidden epistaxis.Examination with endoscopy,combined with the findings on the middle and inferior turbinate and the features of blood flow in different sites,will be important on recognizing the hidden epistaxis and locating the hemorrhagic foci.

Uterine artery embolization(UAE)is a safe and effective method for uterine leiomyomas but its long and middle term effects are definite. Furthermore it bears some exguisite comparision with the conventional therapy but not as a radical one, with a tendency. However, to develop new leiomyomas and recurrence after UAE, there for all patients should be monitored with clinical and imaging examinations for more than 2 years after the procedure. At present,a few literatures involving the factors that could influence the effects of UAE have been issued. It is necessary to carry on large-scale clinical research of the related factors influencing the results of UAE in order to guide clinical practice correctly and swiftly.(J Intervent Radiol, 2006, 15: 503-506)

Objective To analyze the reasons of the TB outbreak in that school and to explore strategy of warning and preventing TB in schools.Methods epidemical investigation,screening close-contactors,analyzing and dealing with epidemic situation.Results 51 TB cases were detected from Oct 2003 to Mar 2005,among them,there were 42 acquired TB cases (6 sputum smear positive cases),9 tuberculosis pleurisy cases.30 of them didn't experience any health education about TB control and prevention,and know nothing about TB.Rest of them is not much better.Only tow of them is resisted by school infirmary,7 of 16 students who were diagnosed with TB before screening and took treatment were reported to local CDC.Conclusions Students lack of self-protective ability; administration of school infirmary was not well-organized,so that so many TB cases in a short period couldn't be noticed and the weakness of the report system is the major reason causing the outbreak to be long term and involving so many victims.it is emergency to enforce TB control in schools,and it is crucial to establish TB warning system in schools.

Objective To provide new diagnose informations for clinician by using image fusion. Methods 30 cases with brain lesion (men 18,women were studied 12). Twenty cases were examined by CT or MR in 1_2 weeks, the others were checked by MR, after being diagnosed with CT. These image data were input into computer the center and main axis of image were located by Legendre moment then the CT and MR images were registered by translation, scaling and rotation. Results Of 30 image fusions, supplementary informations were provided to each other in 28 cases,prediction of disease progress in 19 cases. There were 4 cases confirmed at surgery. But in 2 cases no obvious advantage was obtained by image fusion.Conclusion CT and MR image fusion provides useful information for definitive diagnosis, planning of surgery and radiotherapy. To fuse the images of CT and MR, the Legendre moment approach is direct, simple and fast.

OBJECTIVE:To standardize the writing of outpatient prescriptions and set up monitoring mechanism on rational use of antibiotics and drug costs.METHODS:A total of 400 prescriptions collected from 8 departments(50 from each department)of our hospital in the fourth quarter of 2005(before the examination)and from first to fourth quarter in 2006(after the examination)were examined statistically according to Inspection Items and Writing Requirements of Clinical Prescriptions,Guiding Principle of Rational Application of Antibiotics in Hospital,Principles of Classified Management of Antibiotics which were formulated by our hospital.RESULTS:Before prescription examination,the qualified rate of prescriptions was only 57.5%,but rose to an average of 85.6% after the examination.CONCLUSION:To include the standardized writing of prescriptions and reasonable application of antibiotics in the assessment of hospital comprehensive goals was proved to be an effective management method.

BACKGROUND: Bone marrow mesenchymal stem cells (BMMSCs) can be induced differentiating into osteoblasts and chondroblasts, DNA methylate depressant 5-azacytidine can induce BMMSCs expressing myogenic regulating factors: Myf5 and myopoietin, which involving in the differentiation of BMMSCs into myoblasts.OBJECTIVE: Muscular traumatic fluid containing the highest protein content was screened out and co-cultured with BMMSCs,in order to explore the inductive effect on the proliferation and myogeneis of BMMSCs.DESIGN : Standardized comparative study.SETTING .:At State Key Laboratory of Trauma, Bums and Combined Injury,Institute of Combined Injury, Medical College of Preventive Medicine, Third Military Medical University of Chinese PLA.MATERIALS: Muscular traumatic model was established on 18 Balb/C pure rats for the extraction of muscular traumatic fluid, the inductive effect of the fluid on BMMSC was then compared with 5-azacytidine.METHODS:This study was carried out at State Key Laboratory of Trauma,Burns and Combined Injury, Institute of Combined Injury, College of Preventive Medicine, Third Military Medical University of Chinese PLA from April 2001 and September 2003. Bradford colorimetric was used to detect the protein content in the muscular traumatic fluid, and the fluid with the highest protein was used to co-culture with BMMSC, whose effect on the proliferation of BMMSC was measured with MTT methods at day 0, 3, 6, 9, 12, 15.RT-PCR technique was used to detect the expression of myopoietin at day 6,with its myogenic effect compared with that of 5-azacytidine.fluid on BMMSC.eration of BMMSC: the proloferative activity of BMMSC in traumatic fluid genic effect of traumatic fluid on BMMSC: myopoietin could not be found expressed in traumatic fluid group, but strongly expressed in 5-azacytidine group.CONCLUSION: Muscular traumatic fluid can promote the proliferation of BMMSC, but has no myogenic effect.

Objective To study the prevalence of metabolic syndrome (MS) within the Uyghur people with abnormal glucose metabolism in Xinjiang province according to three different diagnostic criteria and effects of accumulation of MS components on blood lipid profile.Methods Components of MS and blood lipid profile were observed with 666 Uyghur people with abnormal glucose metabolism after cluster randomized sampling method for selecting in Xinjiang province,and analyzed with the recommended diagnostic criteria by the National Cholesterol Education Program-Adult treatment Panel Ⅲ(NCEP-ATP Ⅲ,2001),the Chinese Diabetes Society under Chinese Medical Association (CDS,2004) and the International Diabetes Federation (IDF,2005).Results Prevalence of MS was 21.92％ (14.67％),23.72％ (15.88％),57.51％ (38.48％) with the criteria by NCEP-ATPⅢ,CDS,and IDF,respectively.IDF was the best among three criteria.The most combination was the abnormal glucose metabolism,dyslipidemia and obesity.In the ATPⅢ (2001),with the increase of number of components of metabolic syndrome,highdensity lipoprotein cholesterol (HDL-C) drop,low density lipoprotein cholesterol (LDL-C) increased; there was not significant difference in the CDS.Conclusions The incidence of MS was high in the Uyghur people with abnormal glucose metabolism in Xinjiang province.Most of them complicated with dyslipidemia.One of common components of MS included the elevated triglycerides,decreased HDL-C,and increased size of LDL-C particles,which could easily cause cardiovascular disease.

Objective To discuss endoscopic surgical treatment and its effect of intranasal contact point headaches.Methods Twe(n)ty-five patients with intranasal contact point headaches were treated by endoscopic rhinoplasty of nasal cavity,including middle turbinoplasty,functional resection of ostiomeatal complex,endoscopic submucous septoplasty.Achieved organic combination of the above surgery methods according to the different results of the CT scan and endoscope,the surgical procedure waft designed individually.Results All patients were followed up for 9 to 12 months.Recovery was 21 cases(84.00%),efficacy was 3 cases(12.00%),inefficacy was 1 case(4.00%),the rate of fully recovered without serious complication was 96.00%(24/25).Conclusions Intranagal contact point headaches is a sort of the nasal headaches as a result of multi abnormality of nasal cavity structure.Endoscopic rhinoplagty is an effective treatment by means of reconstructing the balance of bilateral nasal cavity and improving its function.