Objective To investigate the effect of Chinese medicine Louxie mixture on vascular reactivity in atherosclerosis rats. Methods Forty male rats were randomly divided into four groups: the control group (A group, n＝10) was fed with normal diet; the model group (B group, n＝10), atorvastatin treated group (C group, n＝10 and Louxie mixture group (D group, n＝10) were fed with high fat/cholesterol diet. Atorvastatin 10 mg/kg·d-1 was administered to C group and Louxie mixture to D group for 10 weeks by gavages. Serum endothelin-1 (ET-1), nitric oxide (NO) and nitric oxide syntheses (NOS) were observed in different groups before and after the treatment. Vascular reactivity of aortic rings was measured by both the sodium nitroprusside(SNP)-induced endothelium-independent relaxation (NEDR) and the acetylcholine (Ach)-induced endothelium-dependent relaxation (EDR) in different groups. Results After treatment, the (19.03±1.72)μmol/l; NOS (24.78±0.25)U/ml vs (15.36±0.24U/ml), P＜0.01], while the level of ET-1in B levels of NO and NOS in B group were significantly lower than those in A group [NO(35.73±3.72)μmol/l vs group was higher than that in A group [(34.58±4.00) pg/ml vs (117.58±5.34)pg/ml,P＜0.01]. The levels of NO and NOS were significantly increased and the level of ET-1 was decreased in C and D groups after the treatment [NO(C: 31.30±1.96 umol/l;D: 32.85±3.70 umol/l); NOS (C: 21.96±1.07 U/ml ; D: 19.78± 1.20U/ml ); ET (C:58.26±5.14 pg/ml; D:59.30±5.73 pg/ml), P＜0.01]. The activities of NEDR were similar in four groups[SNP Emax (A: 97.33±1.31; B: 98.24±1.04;C: 97.52±1.09; D: 97.91±1.59)%, P＞0.05], but the level of EDR in the B group (P＜0.01) was the lowest among four groups [Ach Emax (A: 72.65±3.31; B: 32.68±2.39;C: 61.63±2.07; D: 57.58±2.43)%, P＜0.01]. Conclusion Chinese medicine Louxie mixture can protect vascular function in atherosclerosis rats.

Objective To study the impact of respiratory frequency and amplitude of patients with the thoracic or abdomen tumor on 4DCT' s reconstructed image.Methods 75 thoracic or abdomen tumor patients who performed a scanning with belly belt-type respiratory gating on 4DCT between November 2012 to March 2013 in our hospital were retrieved.Reviewed their respiratory frequency,amplitude and fault distance of 4DCT' s reconstructed image and analyzed the correlation fault distance of the reconstructed image.The correlation analysis was used by bivariate Spearman method.Results Among these reconstructed images,fault distance more than 6 mm could be seen in 11 cases,fault distance ranging from 3 mm to 6 mm could be found in 46 cases,and distance less than 3 mm could be detected in 18 case.Respiratory frequency correlated significantly with the amplitude (rs =0.369,P =0.000);the respiratory rate had a tight association with the fault distance of the reconstructed image (r,=0.273,P=0.018);and respiratory amplitude was associated obviously with the fault distance of the reconstructed image (r,=0.696,P=0.000).Conclusions Both 4DCT reconstructed image and respiratory amplitude are significantly correlated to the continuity of the respiratory frequency.The smaller the respiratory frequence and amplitude change are,the better continuity will be.

Objective To study the impact of setup error caused by computed tomography ( CT) images with different resolutions in the Sentinel system on clinical treatment. Methods A phantom was scanned by large?aperture positioning CT with two different resolutions ( CT1:0. 5 mm × 0. 5 mm × 1. 0 mm, FOV 256 mm, Matrix 512, thickness 1 mm;CT3:1. 0 mm×1. 0 mm×3. 0 mm, FOV 500 mm, Matrix 512, thickness 3 mm) . The CT images were transferred to the planning system. The radiation fields were designed and transferred to MOSAIQ and Sentinel systems. Ten fixed setup errors were applied to a six degree of freedom couch. The Sentinel system was used to position the two groups of CT images and generate the setup errors. The comparison of two datasets was made by paired t?test. Cone?beam CT was used for independent verification. Results The setup errors in x?, y?, and z?directions were significantly smaller on CT1 than on CT3(0.19±0. 11 vs. 0.33±0. 16 mm, P=0. 061;0.59±0. 79 vs. 1.07±1. 09 mm, P=0. 008;0.67±0. 75 vs. 1.16±1. 30 mm, P=0. 043). There were no significant differences in rotational errors in x?, y?, or z?directions between the two datasets ( P=0. 494;P=0. 182;P=0. 298) . Conclusions The Sentinel system has a higher setup accuracy in the 0. 5 mm×0. 5 mm×1. 0 mm mode than in the 1. 0 mm×1. 0 mm×3. 0 mm mode. However, the later mode is still an acceptable choice in clinical treatment.

Objective To understand the epidemic situation of hydatid disease in Gansu Tibetan Autonomous Prefecture(Gannan state) Gannan Province,and prevalence of the disease in population,livestock and final host dogs,and to evaluate the effectiveness of prevention and control measures.Methods In 2012:①An investigation was carried out according to the requirements of Technical Solutions of Hydatid Disease Prevalence,Gansu Province; in every county(city) of Gannan Prefecture,administrative villages were selected as survey units,by stratified cluster sampling based on the semi agricultural semi pastoral areas,pastoral areas,agricultural areas and towns.According to the proportion of the population of each layer to the population of each county,the number of people and the number of villages to be surveyed were determined.Sixteen villages were selected,and 200 people were selected in each village(from a neighboring village to make up the insufficient number in case of need),and B ultrasound method was used to carry out the census.②Children serum survey:stratification was done according to pastoral areas,semi agricultural semi pastoral areas,agricultural areas and towns population in each county(city),1 primary school was selected,children less than 12 years old were examined by B Ultrasound,and serum antibodies of Echinococcus granulosus were tested by enzyme-linked immunosorbent assay(ELISA).③ Surveillance of source of infection:in the selected villages,20 kennel households were selected in each village,dog feces was collected,and canine Echinococcus antigen was detected by double antibody sandwich ELISA method.④)Monitoring of intermediate host:1 000 sheep (or 500 cattle) were selected in each county(city),and hydatid disease was examined by anatomical method.⑤Investigation of health education was done in the form of a questionnaire survey of hydatid disease prevention knowledge and behavior survey on the awareness rate.Results The prevalence rate of population was 0.10％ (29/28 960); prevalence rate of herdsmen was 0.13％ (17/13 015); farmers prevalence rate was 0.06％(8/12 780); in children under 12 years of age,the infection rate was 2.64％ (336/12 728) ; dog infection rate were 3.90％ (117/3 001) ; livestock infection rate was 1.72％ (121/7 027); and the infection rates of cattle and sheep were 2.41％(38/1 574) and 1.52％(83/5 453),respectively.The rate increased from 40％(720/1 800) to 70％(1 260/1 800) of hydatid disease prevention knowledge awareness in farmers and herdsmen after health education.Conclusions The scope of hydatid disease in Gannan Prefecture is broad; the patient population mainly is herdsmen,and farmer is second.Epidemic factors include contact canine and vices; the farmers and herdsmen have low awareness of hydatid disease prevention knowledge.Poor production and lifestyle are difficult to change in the short term,we need to further strengthen the prevention measures.

Objective: To investigate the usage frequency of radiological diagnosis devices in ten hospitals in Tianjin, China, and to provide a basis for the survey of medical radiation frequency in Tianjin. Methods: Ten hospitals from the ten districts in Tianjin were enrolled as subjects by a convenient sampling method. A survey was conducted to assess the general information and radiological diagnosis device information and usage frequency in those hospitals in 2016. The radiological examination frequency in Tianjin was estimated. Results: A total of 610 458 patients received radiological examinations in the sampled hospitals in 2016. In those patients, 371 882 received X-ray examinations for imaging and 238 576 for computed tomography (CT) ; there were slightly more female patients than male patients, suggesting a relatively equal gender distribution; patients older than 40 years accounted for 65.53%, which was the highest among all the age groups. Different types of radiological diagnosis devices were mostly used in tertiary and secondary hospitals. In Tianjin, the estimated frequency of X-ray examination for imaging and CT scanning was 451 and 188 per thousand people, respectively, in 2016. Conclusion The frequency of radiological diagnosis is relatively high in the ten hospitals in Tianjin. The investigation of medical radiation in Tianjin needs to be improved.

Objective:To explore the clinical features of ultrasound intervention combined with antibiotics in the treatment of Klebsiella pneumoniae liver abscess, and to provide a reference for clinical treatment.Methods:The clinical data of 100 patients with Klebsiella pneumoniae liver abscess treated in Beijing Friendship Hospital Affiliated to Capital Medical University from January 2015 to November 2020 were analyzed retrospectively. The patient's gender, age, abscess diameter, number of abscesses, abscess separation, air cavity formation and length of hospital stay were recorded. The blood white blood cell (WBC), neutrophil percentage (GR%), platelet count (PLT), C-reactive protein (CRP), procalcitonin (PCT), alanine aminotransferase (ALT), aspartate aminotransferase (AST), total bilirubin (TBIL), prothrombin activity (PTA) before and after treatment were analyzed.Results:After treatment, the infection indexes (WBC, GR%, PLT, CRP, PCT) were significantly decreased, and the liver function indexes (ALT, AST, TBIL, PTA) were significantly improved ( P<0.05). Patients were divided into two groups according to diabetes. The results showed that the diabetic group was prone to air cavity formation (χ 2=8.632, P=0.003), and there was no significant difference between other clinical indicators among the groups ( P>0.05). Diabetes mellitus group was divided into two groups based on hemoglobin A1c (HbA1c) 9%. The results showed that the HbA1c>9% group was younger ( t=2.861, P=0.006), more male (χ 2=6.81, P=0.013), and more prone to form multiple abscesses (χ 2=10.304, P=0.001), while the other clinical indicators were not statistically significant. Conclusions:Ultrasound intervention combined with antibiotics can effectively treat liver abscess. Patients with diabetes are prone to air cavity formation, which should be paid more attention in clinic.

OBJECTIVE: To investigate the feasibility of MRI three-dimensional (3D) reconstruction model in quantifying glenoid bone defect by comparing with CT 3D reconstruction model measurement. METHODS: Forty patients with shoulder anterior dislocation who met the selection criteria between December 2021 and December 2022 were admitted as study participants. There were 34 males and 6 females with an average age of 24.8 years (range, 19-32 years). The injury caused by sports injury in 29 cases and collision injury in 6 cases, and 5 cases had no obvious inducement. The time from injury to admission ranged from 4 to 72 months (mean, 28.5 months). CT and MRI were performed on the patients' shoulder joints, and a semi-automatic segmentation of the images was done with 3D slicer software to construct a glenoid model. The length of the glenoid bone defect was measured on the models by 2 physicians. The intra-group correlation coefficient ( ICC) was used to evaluate the consistency between the 2 physicians, and Bland-Altman plots were constructed to evaluate the consistency between the 2 methods. RESULTS: The length of the glenoid bone defects measured on MRI 3D reconstruction model was (3.83±1.36) mm/4.00 (0.58, 6.13) mm for physician 1 and (3.91±1.20) mm/3.86 (1.39, 5.96) mm for physician 2. The length of the glenoid bone defects measured on CT 3D reconstruction model was (3.81±1.38) mm/3.80 (0.60, 6.02) mm for physician 1 and (3.99±1.19) mm/4.00 (1.68, 6.38) mm for physician 2. ICC and Bland-Altman plot analysis showed good consistency. The ICC between the 2 physicians based on MRI and CT 3D reconstruction model measurements were 0.73 [95% CI (0.54, 0.85)] and 0.80 [95% CI (0.65, 0.89)], respectively. The 95% CI of the difference between the two measurements of physicians 1 and 2 were (-0.46, 0.49) and (-0.68, 0.53), respectively. CONCLUSION The measurement of glenoid bone defect based on MRI 3D reconstruction model is consistent with that based on CT 3D reconstruction model. MRI can be used instead of CT to measure glenoid bone defects in clinic, and the soft tissue of shoulder joint can be observed comprehensively while reducing radiation.
Male ; Female ; Humans ; Young Adult ; Adult ; Imaging, Three-Dimensional/methods* ; Tomography, X-Ray Computed/methods* ; Joint Instability ; Shoulder Joint/diagnostic imaging* ; Shoulder Dislocation ; Magnetic Resonance Imaging/methods*