Objective To explore the X ray imaging of the common complications after total hip replacement (THR), in order to improve the diagnosis and differential diagnosis of the complications of THR. Methods Forty six cases were revised because of the complications of THR. The value of X ray in the diagnosis of complications was assessed by observing the radiography and comparing with surgical results. Results In these cases, after revision, 34 cases had aseptic loosening of femoral component, 13 cases had aseptic loosening of acetabular component, presenting on radiographs as the lucent zone alone the component, which was ≥2 mm in width and had the same contour as the component. 4 cases had septic loosening of femoral and (or) acetabular component, presenting on radiographs as the lucent zone alone the component, and bone destruction and sinus were also observed. The lucent zone was also ≥3 mm, but had the different contour of the component. Both kinds of loosening may accompany with migration of the component or not. 6 cases had dislocation of femoral head, presenting on radiographs as the head lying out of acetabulum in 2 cases, central migrating of the head in 2 cases, and asymmetrical position of the head in acetabulum in 2 cases. Conclusion The lucent zone and component migration had the important diagnostic value of loosening, the contour of lucent zone and sinus could help to make the differential diagnosis of aseptic and septic loosening. Asymmetrical position of the head in acetabulum and the head lying out of acetabulum were the signs of dislocation.

Objective:By analyzing the principle and mechanism of far-infrared radiation therapy, explore the far infrared radiation therapy for arteriovenous fistula function protection significance. Methods: Summarized and analyzed in hemodialysis patients arteriovenous fistula dysfunction causes and hazards, combined with clinical results, analyzed the intervention and protective effect of far-infrared radiation therapy for arteriovenous fistula.Results: Long-term treatment of far-infrared radiation play a very effective role in the intervention and protection for arteriovenous fistula function maintenance.Conclusion: By analyzing the principle and mechanism of far infrared radiation therapy, summed arteriovenous fistula dysfunction reasons. Clarified the far-infrared radiation therapy has a positive clinical significance in hemodialysis patients arteriovenous fistula function of protection.

OBJECTIVE:To optimize the extraction technology of total lignans from pine needles of Cedrus deodara. METH-ODS:Using ethanol volume fraction,ratio of liquid to solid and extraction time as response factor,the content of total lignans as response value,the response surface methodology test was conducted based on Box-Behnken design to optimize the extraction tech-nology of total lignans from pine needles of C. deodara. RESULTS:The optimal extraction technology was as follows as ethanol volume fraction of 78%,ratio of liquid to solid 25∶1,extraction time 1.75 h. The content of total lignans from pine needles of C. deodara was 99.2 mg/g,which was close to predicted value 100.49 mg/g,with relative deviation of 0.65%. CONCLUSIONS:Op-timized extraction technology of pine needles of C. deodara by response surface methodology is feasible and stable,and has good predictability.

Objective In order to verify the validation of the industry standard WS/T 405‐2012 about adult blood cell analysis reference range ,and ensuring their clinical application .Methods According to Clinical and Laboratory Standards Institute(CLSI) C28‐A3 recommendation method ,40 health reference individuals were enrolled in the study whose blood samples were collected ,de‐tected and analyzed .Results The blood cell analysis indicators involved in the validation included WBC ,RBC ,hemoglobin(HGB) , hematocrit(HCT) ,mean corpuscular volume(MCV) ,mean corpuscular hemoglobin(MCH) ,mean corpuscular hemoglobin concen‐tration(MCHC) ,platelet(PLT ) ,etc .The probability of all results of selected 40 reference individuals beyond the WS/T 405‐2012 blood cell analysis reference interval were no more than 10% (value 90% or higher) .Conclusion The WS/T 405‐2012 blood cell a‐nalysis reference range is suitable for the laboratory .A perfective verification system should be established to ensure its application .

Objective To study the value and clinical significance of diffusion tensor imaging(DTI)in differentiating high-grade astrocytomas and solitary metastatic tumors of brain.Methods 16 patients with intracranial solitary metastasis and 25 patients with high-grade astrocytoma confirmed pathologically were examined with MR DTI.Mean diffusivity(MD)and fractional anisotropy(FA)were measured in the regions of interest(ROI)of peritumor and cerebral parenchyma of the normal side on DTL Fiber tractography was reconstructed and the encountered patterns of tumor-related alteration to cerebral white matter were observed.Results The peritumor were all depicted as hyperintense or isointense signals on DTI.The FA values were 0.227±0.05 and 0.169±0.07 in the peritumor of high-grade astrocytoma and metastasis respectively,which was of significant difference(P＜0.05).Furthermore,fiber tractography could display the course of white matter tracts in three-dimensional space.Conclusion DTI may be help to differential diagnosis of solitary metastasis and high-grade astrocytoma in clinical practice.

Objective To evaluate the role of comprehensive cardiac MRI (CMRI) in diagnosis of patients with coronary artery disease (CAD) Methods 55 patients with acute coronary syndrome underwent MR imaging 3-6 months after the reperfusion therapy Short axis images acquired by cine FIESTA sequence were used to analyze the motion of the different anatomy regions Used the FGRE ET sequence to detect the patterns of the first pass perfusion after injection of 0 2 mmol?kg 1 Gd DTPA at a flow of 3 ml?s 1 7-12 min later, MDE pulse sequence used to recognize the high signal in the myocardium Results At study entry, 38 subjects had the defect in the first pass perfusion The signal in the defect was significantly lower than that in the normal regions, which always in the subendocardium 51 subjects had delayed enhancement regions in the myocardium at different degree and different range The mean intensity of hyperenhanced regions was 4 36 times higher compared with that of the regions without hyperenhancement The difference between the 2 regions had statistical significance The extent of hyperenhancement was significantly related to the abnormality of wall motion The range of delayed enhancement was bigger than that of the first perfusion defect Conclusion Comprehensive evidence of delayed hyperenhancement, dysfunction of myocardium, and the defect of first pass perfusion can be used to predict myocardial infarction

Objective To determine the relationship between the delayed enhanced area on contrast enhanced MRI to the infarct area on pathologic examination in order to offer the groundwork for clinic in the assessment of myocardial viability by MRI Methods Application of short axial view of delayed contrast enhanced MRI was assessed in a pig model of nonreperfused and reperfused myocardial infarction After excision, the hearts were sectioned into short axial slices, and all slices were stained with TTC The signal intensity on the delayed contrast enhanced MRI of the infarct area was compared with that of the normal area The extent of delayed enhanced area on contrast enhanced MRI was also compared with the extent of the infarct area on TTC stained sections Results On delayed contrast enhanced MRI, the signal intensity of the 7-10 day-old infarct area was much higher than that of normal area In nonreperfusion group, the signal intensity of infarct area(20 81?6 49)was 7 76 times than that of normal area(2 68?1 10)( t =11 68, P 0 05)in nonreperfusion 7-10 day-old myocardial infarction, and the extent of delayed enhanced area (12 52?5 93)% was larger than the extent of infarct area(11 13?5 81)% ( t =-14 48, P

Objective To evaluate the diagnostic value of quantitative tissue velocity imaging ( QTVI ) in the detection of right ventricle function in a rabbit model of pulmonary artery embolism .Methods Twenty-two healthy adult rabbits were used in this study .The animal models of acute pulmonary embolism were created by injecting gelatin sponge into the ear vein of rabbits .The changes of right ventricle function were dynamically observed at immediately , 1 week, and 3 weeks after the establishment of acute pulmonary embolims models .QTVI images of the 4-chamber view at cardiac apex were recorded and analyzed by off-line analysis.Results The VP was significantly reduced immediately after the models were built compared with the data before modeling in both the basal and middle segments , the TQ-S was prolonged , and Ve/Va>1 (P<0.05).The VP at1 week after modeling was not significantly decreased than the data before modeling in both the basal and middle segments , and the TQ-S was prolonged, but the Ve/Va ratio was <1 (P<0.05).At 3 weeks after modeling, the VPwas decreased compared with the data before modeling , and the Ve/Va ratio was <1 (P<0.05). The intra-group comparison showed that the V P of the basal segment of right ventricle free wall was enhanced than that of the middle segment (P<0.05), butTQ-S was not obviously prolonged in both the two segments .Conclusions Quantitative tissue velocity imaging can reflect the contraction and relaxation of right ventricle in rabbits precisely .It is a good method to evaluate the function of right ventricle in animal models of pulmonary artery embolism.

As the urgent need of both clinic and research,the identification of hypertonia subtypes is becoming more and more important. Hypertonia assessment tool is a standardized discriminative measure with good reliability and validity. Hypertonia assessment tool can identify paediatric hypertonia subtypes. For its easily learning,it can be easily generalized in clinician.

Objective To study the clinical significance of leukocyte parameters measured by using automatic blood cell analyzer SysmexXE‐2100inpatientsnewlydiagnosedwithhepatitisB.Methods 96patientsnewlydiagnosedwithhepatitisB(observation group) and 100 people who underwent healthy examination during the same period(control group) were recruited in the study .Rel‐ative indicators were measured for the people mentioned above ,such as the DNA of Hepatitis B virus(HBV‐DNA) ,Hepatitis B sur‐face antigen(HBsAg) ,aspartate aminotransferase(AST ) ,alanine aminotransferase(ALT ) ,lymphocytes parameters Lymph‐Y and Lymph‐X ,neutrophils parameters Neut‐X and Neut‐Y .The test results were recorded and statistically analyzed by using software SPSS19 .0 .Results The differences of Lymph‐X ,Neut‐Y and Neut‐X were not statistically significant compared between observa‐tion group and control group(P>0 .05) ,while the differences of HBV‐DNA ,HBsAg ,AST ,ALT and Lymph‐Y were statistically significant compared between the two groups(P<0 .05) .In addition to that ,the parameter Lymph‐Y was positirely correlated with HBV‐DNA(r=0 .160 ,P=0 .026) and HBsAg(r=0 .149 ,P=0 .037) .Conclusion The peripheral blood lymphocytes parameter Lymph‐Y of patients newly diagnosed with hepatitis B is higher than healthy people ,which makes it possible to become an indicator for differential diagnosis .