The DICOM printing management system realizes the monitoring,record and management of the whole DICOM printing process.The system can also select the Key Image without additional workload for doctors and technicians.

Integrated radiology management system develops on the basis of radiology information system (RIS) and picture archiving & communication system(PACS). It is a working and management platform for doctors, technicians, nurses and engineers in radiology department. The system not only integrates RIS, PACS, HIS and radiology equipment, but also adds an examination workstation and a DICOM print management system. All the information can be recorded, searched and transmit by the net in quantified and detailed management, thus enabling the management more effective.

The performance indexes of 64-slice CT are impacted by many parameters.To choose a satisfying CT scanner,the key parameters should be evaluated based on the purpose and overall factors.

The article introduces the principle of position emission tomography(PET),radiolabeling substance and radiotrace.Through comparing the different values between 11 C Acetate and 18 F FDG in HCC(Hepatocellular Carcinoma)imaging,it states the importance of using these two kinds of radiotracer to detect tumor in PET examination.Meanwhile,the article also discusses the applicative condition of 11 C Acetate in PET imaging,which demonstrates that the selection of crystal plays a key role in applying different radiotrace in PET imaging.

Through the integration of multiple types of information use hospital data resources to provide effective practice parameters for the hospital management decisions.Mainly includes the following aspects:First,the management of personnel files,personnel files to achieve the secure sharing of information and knowledge management in the information dossier on the basis of improving the efficiency of hospital management and scientific personnel.Secondly,the clinical aspects of digital information using the extended use of information technology to achieve information sharing medical imaging information systems and the medical doctors on the PACS station,nurse station systems,and computer management system,library networking integration and other modern IT networking,re sources to achieve the hospital image information sharing.In addition,play the role of information in the files of clinical teaching hospitals in major events,to carry out medical treatment,teaching,scientific research system for clinical teaching staff provide a basis.To enhance the scientific decisionmaking of the hospital management.

Patients with burning mouth syndrom(BMS,n =12)and patients with wisdom tooth removal(controls,n =9)were included. Immunohistochemistry and image analysis were used to quantify P2X3 receptor expression in lingual nerve fibres.A pain history and score were recorded on a visual analogue scale(VAS)prior to obtaining a lingual biopsy.The value of P2X3 receptor positive fibres in BMS and control subjects was 0.56 ±0.29 and 0.15 ±0.06 respectively(P <0.001).There was no significant correlation between P2X3 and VAS scores(R2 =0.012).Increased P2X3 may play a role in BMS but not correlated with the VAS score.

Objective To compare the reliability and validity of job content questionnaire (JCQ1.0) and effort-reward imbalance (ERI) questionnaire in job stress study for civil aviation staff. Methods One hundred and ten individuals were investigated by JCQ1. 0 and ERI questionnaire for job stress, and their reliability and validity were evaluated. Results In JCQ1. 0, high-strain, active, passive,and low-strain workers accounted for 23.6%, 20. 9%, 24. 5%, and 30. 9%. Job stress was found in 59. 1% in ERI. The internal consistency reliabilities (Cronbach α) of the 3 dimensions in JCQ1.0 ranged from 0. 10 to 0. 51, and the split-half reliability was 0. 50; however, the internal consistency reliabilities ( Cronbach α) of the 3 dimensions in ERI ranged from 0. 35 to 0. 79, and the split-half reliability was 0. 78.Most items of both questionnaires showed good construct validities. In factor analysis, total variance contribution was 64. 62% ( JCQ1. 0 ) and 58.08% ( ERI ), respectively. Conclusion ERI may be a reliable and valid tool of job stress assessment; however, JCQ1.0 seems to need further modification.

Objective To determine the effect of interferon-gamma (IFN-γ) on the phagocytosis and killing activity of a murine macrophage cell line RAW264.7 against T.asahii,and to estimate the possibility of treating T.asahii infection with IFN-γγ.Methods T.asahii was cultured with or without the presence of different concentrations (10,100,1000 U/ml) of IFN-γfor 18 hours followed by the incubation with RAW264.7 cells for different durations.After additional culture for 45 minutes,the number of T.asahii cells phagocytosed by RAW264.7 cells was counted under an inverted microscope,and the rate of phagocytosis was calculated.The number of colony forming units of T.asahii per milliliter (cfu/ml) was counted after 4-hour additional culture and the growth inhibition rate was determined.Data were processed by the SPSS 16.0 software,and comparisons of parameters between these groups were done by Bonferroni method and analysis of variance after homogeneity test of variance.Results The number of phagocytosed T.asahiicells was 25.12 ± 1.81,35.88 ± 3.56,52.12 ± 3.23,with the phagocytosis rate being 25.12％,35.88％ and 52.12％,respectively in RAW264.7 cells incubated with IFN-γ of 10,100,1000 U/ml,significantly different from that in untreated RAW264.7 cells (13.62 ± 2.39,13.62％,all P ＜ 0.01).The colony forming units of T.asahii per ml after incubation with untreated RAW264.7 cells differed significantly from those after incubation with IFN-γ (10,100,1000 U/ml)-treated RAW264.7 cells ((68.12 ± 3.39) × 500 vs.(58.62 ± 4.89) × 500,(45.50 ± 3.02) × 500 and (34.62 ± 4.24) × 500,all P＜0.01),with the growth inhibition rate being 25.21％,41.95％ and 55.83％ respectively for RAW264.7 cells incubated with IFN-γ of 10,100,1000 U/ml.Statistical differences were also observed in the killing activity between RAW264.7 cells incubated with different concentrations of IFN-γ (all P ＜ 0.01).Conclusion IFN-γ (10-1000 U/ml) may enhance the phagocytosis and killing activity of RAW264.7 cells against T.asahii in a concentration-dependent manner.

Objective To investigate treatment effects of lentivirus mediated RhoA short hairpin RNA(shRNA) on xenograft tumor of ovarian cancer in nude mice in vivo and the underlying mechanism.Methods Human ovarian cancer cell line HO8910 were inoculated to establish subcutaneous xenograft model of human ovarian cancer.Tumor-bearing nude mice were assigned randomizely to three groups:LentiRhoA-sh group,Lenti-negative control (NC) group and phosphate buffered saline (PBS) group.lentivirus mediated RhoA shRNA,negative control lentivirus and PBS were respectively injected in the three groups.Effects of treatment were observed by tumor growth curve,tumor volume,tumor weight,and tumor inhibition rate.Xenograft tissues and liver,spleen,lung,and renal tissues were examined by hematoxylin and eosin (HE) staining or were detected by streptavidin-perosidase (SP)immunochemical method.The changes of RhoA gene expression in xenograft tissues after lentivirus mediated RhoA shRNA treated were also detected by real-time qPCR,immunochemistry and Western blot assay.Cell apoptosis in xenograft tissues were examined by terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling(TUNEL) method and apoptotic index (AI) were counted.Results Compared with Lenti-NC group and PBS group,the growth speed of xenograft in Lenti-RhoA-sh group delayed significantly after injection 9 days(P ＜ 0.01).Tumor volume (338 ± 114) mm3 decreased significantly in the Lenti-RhoA-sh group when compared with those in Lenti-NC group(1190 ± 332)mm3 and PBS group (1101 ± 396) mm3 (P ＜ 0.01).Tumor weight (0.23±0.11)g decreased significantly in the Lenti-RhoA-sh group when compared with Lenti-NC group (0.79 ± 0.19)g and PBS group (0.74 ± 0.17)g (P ＜ 0.01).Real-time qPCR result shown that the expression of RhoA mRNA (0.30 ± 0.05) decreased significantly in the Lenti-RhoA-sh group compared with Lenti-NC group (0.95 ±0.06) and PBS group(1.00 ±0.11 ; P ＜0.01).Western blot result showed that the expression level of RhoA protein decreased significantly in the Lenti-RhoA-sh group (0.14 ± 0.06) compared with those in Lenti-NC group(0.78 ± 0.14) and PBS group (0.75 ± 0.13;P ＜ 0.01).TUNEL staining displayed that AI significantly increased in the Lenti-RhoA-sh group (20.9 ± 3.4) ％ compared with those in Lenti-NC group(5.2 ±±2.0)％ and PBS group(6.0 ±2.1)％ (P ＜0.01).Conclusion Lentivirus mediated RhoA shRNA may be effectively down-regulate of the expression of RhoA,inhibit the growth of subcutaneous xenograft tumor of ovarian cancer in nude mice by increasing the cell apoptosis.

Objective:To investigate whether radiotherapy should be delivered before the application of immune checkpoint inhibitor PD-1 in patients with advanced non-small cell lung cancer (NSCLC) and evaluate the effect of previous radiotherapy on the efficacy and pulmonary toxicity of PD-1 inhibitor.Methods:Clinical data of patients with stage Ⅳ NSCLC who received immunotherapy in Henan Cancer Hospital from March 2015 to September 2019 were retrospectively analyzed. The baseline data of patients, the status of radiotherapy and immunotherapy and the pulmonary toxicity were collected. According to whether radiotherapy was given before PD-1 inhibitor application, all patients were divided into the previous radiotherapy and non-radiotherapy groups. Survival analysis was performed by Kaplan- Meier method. Results:A total of 90 patients were enrolled including 39 cases in the previous radiotherapy group and 51 cases in the non-radiotherapy group. The median follow-up time was 22.9 months. The median progression-free survival (mPFS) in the previous radiotherapy group was 7.5 months (95% CI 5.4-9.5 months), significantly longer compared with 4.1 months (95% CI 3.1-5.1 months) in the non-radiotherapy group ( P=0.003). The median overall survival (mOS) significantly differed between two groups[15.2 months (95% CI 12.3-18.1 months) vs. 9.3 months (95% CI 6.1-12.5 months)]( P=0.040). The incidence of pulmonary toxicity showed no significant difference between two groups ( P=0.154). Conclusions:Patients with stage Ⅳ NSCLC patients in the previous radiotherapy group obtain significantly better mPFS and mOS and similar pulmonary toxicity compared with their counterparts in the non-radiotherapy group. Nevertheless, the findings remain to be validated by subsequent investigations with larger sample size.