Objective To investigate the CT and MRI features of the hemangiopericytoma (HPC) in central nervous system(CNS) and improve its diagnostic accuracy. Methods The CT and MRI features of the HPC in CNS proved by operation and pathology were retrospectively analyzed and the criteria of diagnosis and differential diagnosis were summarized.Results 7 of 9 cases were intracranial and 2 were intraspinal. The lesions appeared homogeneous high density in 4 cases on plain CT scans and 3 cases appeared inhomogeneous density, 4 cases appeared isointense with cortical gray matter on both T_1-weighted and T_2-weighted images, 3 cases were heterogeneous. All contrast-enhanced scans showed marked enhancement.Conclusion The accuracy diagnosis of HPC in CNS can be made by CT and MRI.

Objective To discuss CT,MR and~1H-MRS features of central neurocytoma(CNC).Methods Imaging findings ofneurocytomas in 7 cases confirmed by pathology were retrospectively analyzed with literature review.2 cases were examined by CT、MR and~1 H-MRS,2 cases only by MR,and 3 cases only by CT.Results All the tumors were located in the lateral ventricles.There were different degree hydrocephalus in all cases.The masses were heterogeneous appearance on CT with necrotic area and fine to course calcifications.Heterogeneous enhancement was seen in the solid portion.The tumors were isointense and hypointense on T_1WI and heterogeneous on T_2WI.Heterogeneous enhancement was also seen on MRI.The in vivo~1H-MRS showed prominent choline(Cho) and low N-acetyl aspartate(NAA) compared to the normal.Conclusion Central neurocytoma should be considered when a tumor was located at the lateral ventricles especially septum pellucidum in young patients.CT,MR and~1H-MRS are helpful in making a preoperative diagnosis.

ObjectiveTo explore influence of emergency nursing process reengineering on the satisfac-tion degree of patients, quality of rescue, rescue time and success rate of rescue. MethodsEvidence-based nursing method was used for emergency nursing process reengineering. The first 30 types of acute and sever diseases and the first 6 large emergency events in 2008 were chosen as the rescue objectves, and they received new emergency nursing process. Influence of classic emergency nursing process in 2007 was retrieved and revalued. The satisfaction degree of patients, quality of emergency nursing and success rate of emergency before and after process reengineering were compared and analyzed. ResultsCompared with that before process reengineering, the satisfaction degree of experts, doctors and nurses, and patients was higher, the quality of emergency nursing greatly improved, the rescue time was less, and the success rate of rescue was higher after process reengineering. ConclusionsEmergency nursing process reengineering was more hu-man oriented. It can rescue patients with acute and severe diseases with lest time, reduce disputes between nurses and patients. It is worthy of application in clinic and the process should be reengineered and im-proved constantly in the future.

Colorectal cancer( CRC) has become one of the major cancer threatening residents′health all around the world, and considerable resources are needed for its prevention and control.Economics evaluation could provide the basis of decision-making for improving the allocation efficiency of health resources in the field of CRC prevention and control.This paper comprehensively reviewed the papers that have been published in the field of colorectal cancer screening,from the points of view of published time,regional economic evaluation re-search,evaluation method,the research angle,input and output measurement,model,recommend strategy.

Objective To analyze the difference among antigens of Angiostrongylus cantonensis in different developmental stages and identify dominant diagnostic antigen for angiostrongyliasis. Methods Antigens of A.cantonensis in different developmental stages were analyzed by SDS-PAGE and immunoblot. Results The protein bands of all developmental stages were similar on SDS-PAGE. The Mr 40 000 , 50 000 , 66 000 and 80 000 antigens reacted not only with the sera of rats infected by A.cantonensis but also with the sera of normal rats. The Mr 104 000 antigen could be discerned by sera of rats infected with A.cantonensis for 2 weeks. The Mr 32 000 antigen could be recognized by sera of rats 2 weeks after infection, and the reaction became stronger with the infection continued. Conclusion The Mr 40 000 , 50 000 , 66 000 and 80 000 antigens might result in the unspecific reaction in the immunodiagnosis of angiostrongyliasis using the crude antigen of A.cantonensis. The Mr 104 000 of larva, Mr 33 000 of adult females and Mr 32 000 of the worms might be used as candidate antigens in early diagnosis and epidemiological survey of angiostrongyliasis.

AIM:To set up a method of simultaneously determining the contents of ephedrine and pseudoephedrine in Zhisou Lixiao Oral Liquid (Herba Ephedrae, Radix et Rhizoma Glycyrrhizae, Semen Raphani, etc). METHOD: The HPLC-quantitative analysis was carried out on a column of Sinochrom ODS-BP by using a mobile phase of acetonitrile-0.02 mol/L potassium dihydrogen phosphate (pH=2.7), (4∶100, with 0.1% triethylamine) under a flow rate of 1.5 mL/min. 207 nm was selected as the wavelength of detector. RESULTS: The linear range of ephedrine was 20.8-208.0 ?g/mL(r=0.999 7) and pseudoephedrine's was 15.0-150.0 ?g/mL(r=0.999 8). The recoveries of them were all between 95% and 105%(RSD

Objective:To study the effect of Snyder's hope theory nursing on the scores of psychological stress, quality of life and neurological function in patients with acute hypertensive cerebral hemorrhage.Methods:From June 2017 to December 2018, 100 patients with acute hypertensive cerebral hemorrhage in the Second Affiliated Hospital of Xi′an Jiaotong University were selected as the study object. According to the random number table, the patients were divided into observation group (50 cases) and control group (50 cases).The patients in the control group were given routine rehabilitation nursing mode, and the patients in the observation group received Snyder′s hope theory nursing on the basis of the control group. The rescue time, the recovery time and the incidence of complications of the two groups were compared. The degree of anxiety and depression, neurological function, quality of life of the patients were evaluated by Self-rating Anxiety Scale(SAS), Self-rating Depression Scale(SDS), National Institutes of Health Stroke Scale(NHISS), Glasgow Coma Scale(GCS) and SF-36.Results:The rescue time and recovery time were (58.13±10.36) min, (12.7±5.3) d in the observation group, and (85.71±8.30) min, (21.1±3.3) d in the control group, and there were significant differences between the two groups ( t values were 14.691, 10.646, P < 0.05).There was no significant difference in SAS, SDS, NIHSS, GCS, SF-36 score before intervention between the two groups ( P> 0.05).The scores of SAS, NIHSS, GCS after intervention were (40.56±1.72), (11.23±2.85), (13.12±4.11) points in the observation group, and (46.56±1.62), (14.97±4.55), (11.13±3.15) points in the control group, and there were significant differences between the two groups ( t values were 17.956, 4.926, 3.212, P<0.01). There were significant differences in SF-36 after intervention between the two groups( t values were 7.124-13.014, all P<0.01). The incidence of complications was 8.0%(4/50) in the observation group, and 24.0%(12/50) in the control group, and there was significant difference between the two groups( χ2 value was 4.762, P<0.05). Conclusions:Snyder's hope theory nursing has a significant effect on the improvement of anxiety and depression in patients with acute hypertensive cerebral hemorrhage, which is worth popularizing.

Objective To investigate the diagnostic value of 1H magnetic resonance spectroscopy (1H-MRS) in mammary tumors and to discuss the technique factors which influence the detection rate.Methods The 1H-MRS features of 47 mammary tumors, of which 24 malignant tumors and 23 benign tumors confirmed by pathology were analyzed. All of the tumors were detected before Gd-DTPA enhancement. Results Eleven of 24 malignant tumors showed increased choline resonance peak at 3.24 ppm while 4 of 23 benign ones at 3.24 ppm .The positive value were 45.8% and 17.4% respectively. The sensitivity and specificity were 45.8% and 82.6% respectively by using 1H-MRS to discriminate benign from malignant tumors. The main factors influencing the detection rate were low suppressed lipid, low suppressed water and low single-noise rate.Conclusion Choline is not special features of malignant tumors. Choline can be obtained despite the nature of tumor if they grow rapidly. The low sensitivity of choline to be detected mainly dues to technique factors.

Objective To investigate the effect and nursing experience of iliacus groin approaches and internal fixation treatment for patients with pelvic fractures. Methods Twenty- six patients with unstable pelvic fracture were obtained iliac groin approaches and internal fixation treatment, the changing symptoms in patients were monitored frequently, and all patients were performed general nursing. Results All patients were followed up for 0.5 to 5.0 years, without obvious complications, the results of surgical treatment included optimal 16 cases, good 7 cases, mean 3 cases. Conclusions Iliacus groin approaches and internal fixation with reconstruction plate treatment on pelvic fractures was proved to be reset accurate, reliable and strong, with better effects. Effective nursing measures can save life of patients with pelvic fractures, speed up rehabilitation of physiological function, improve life quality of the patients.

Objective To investigate the value of apparent diffusion coefficient (ADC) of diffusion-weighted magnetic resonance imaging (DW-MRI) in distinguishing benign from malignant breast lesions. Methods ADC in 26 normal breasts, 24 malignant breast lesions, and 30 benign breast lesions confirmed by operation and pathology were calculated, respectively, and their differentiations in statistics were compared. The differentiations of different ADCs (b=1000-0, 500-0, 1000-500 s/mm2) were also compared. EPI (TR 2900 ms, TE 84 ms, thickness 5 mm) was used in order to acquire the imaging. Results There were significant differences among the ADC values of normal breast tissue, benign, and malignant lesions. The ADC of malignant lesions was lower than those of normal breast tissue and benign lesions, and the ADC of benign lesions was lower than that of normal breast tissue. There were significant differences among the ADC value of b=1000-0, 1000-500, and 500-0 s/mm2. The lower the b value, the higher the ADC. The sensitivity and specificity of ADC for the diagnosis of malignant lesion were 64% and 96.7% if the upper bound of 95% confidence interval was set as a differential level. Conclusion The differentiation of benign from malignant breast lesions by ADC is applicable, although the sensitivity is low, the specificity is high.