Objective:A new algorithm based on Hough transform (HT) was proposed to improve the accuracy and stability of the film image analysis of Automatic Quality Assurance (AQA) test, and to explore the influence of the resolution of film image on the test results.Methods:Nine pairs of films were obtained for AQA modules in this study. Firstly, the median filter was used to preprocess the grayed-out film image to remove noise interference. Then, a global threshold was utilized to binarize the image. The images were edge-detected and the film edge line was extracted by Hough transform. The film image was transformed to the correct position. Finally, the edge of the field shadow circle and the shadow circle of the tungsten ball were extracted by the edge detection method and Hough transform. The radial error was finally obtained by analyzing the concentricity.Results:There was no significant difference in the accuracy between the test results yielded by the HT method and the AQA software ( P>0.05). The difference in the standard deviation of the test results was statistically significant ( P=0.027), indicating that the algorithm increased the stability while ensuring the accuracy of film analysis. Increasing the resolution of film scanning failed to significantly improve the accuracy and stability of film analysis in both two methods. Conclusions:The algorithm used in this study can eliminate the human error caused by film scanning placement while ensuring the accuracy of film analysis, providing a more stable way for the AQA test of the CyberKnife system.

Patients with multiple diseases have a variety of medical needs,especially in elderly patients with senile syndrome.The conventional specialty care model is not suitable for patients with comorbidities and multidisciplinary intervention and management are required.The article introduces the concept and practice of a general practitioner (GP)-led multidisciplinary team in management of comorbidities in the community.Using one case of elderly patient with multiple diseases as example,the article shows how this model worked and how the patient benefited,and the related issues and reflections are also discussed in the article.

Objective:To explore the relationship between stigma, psychological resilience and quality of life in patients with stable schizophrenia.Methods:This study is a cross-sectional study. From January to December 2021, 305 patients with stable schizophrenia who were treated in the Outpatient Department of the Affiliated Brain Hospital of Nanjing Medical University were selected by convenient sampling. The survey was carried out by using the General Information Questionnaire, the World Health Organization Quality of Life-Brief Form (WHOQOL-BREF) , the Connor-Davison Resilience Scale (CD-RISC) , and the Perceived Devaluation Discrimination (PDD) . Pearson correlation analysis was used to analyze the relationship between quality of life, stigma and psychological resilience of schizophrenia patients. The structural equation model was established using AMOS 25.0 and the intermediary effect was verified. A total of 305 questionnaires were distributed and 286 valid questionnaires were recovered, with an effective recovery rate of 93.8% (286/305) .Results:Among 286 patients with stable schizophrenia, the scores of psychological resilience, stigma and quality of life were (56.49±14.28) , (29.62±5.70) and (63.15±11.67) respectively. There was a positive correlation between the psychological resilience and the quality of life ( r=0.461, P<0.01) , a negative correlation between the stigma and the quality of life ( r=-0.328, P<0.01) , and a negative correlation between the stigma and the psychological resilience ( r=-0.309, P<0.01) . The results of intermediary effect analysis showed that psychological resilience played a part of intermediary role between the stigma and the quality of life, and the indirect effect was statistically significant (β=- 0.167, P<0.001) , the intermediary effect accounted for 32.2% of the total effect. Conclusions:Psychological resilience is an intermediary variable between the stigma and the quality of life in patients with stable schizophrenia. Nurses should carry out intervention strategies based on the impact of psychological resilience path to reduce the patients' stigma and improve their quality of life.

Objective:To investigate changes in the self-management ability of chronic diseases in elderly diabetic patients during the novel coronavirus pneumonia pandemic.Methods:A multi-stage cluster sampling method was used to retrospectively collect diabetes management information from elderly diabetic patients treated in five community health service centers in Beijing in June 2022, including 295 elderly diabetic patients, and changes in management of their self-care practices such as diet, exercise, medical treatment and medication, blood glucose monitoring, complication management, and psychological states before and after the outbreak(2019-2022)were analyzed.Results:In 295 elderly diabetic patients, increased glycated hemoglobin( P<0.05)and body mass index(BMI)( P<0.05)were observed during the pandemic.Among 115 patients with underlying diabetic complications, 75.7%(87)of patients had worsening symptoms of chronic complications of diabetes and a shortened weekly exercise time[124(60, 300)min vs.140(60, 300)min, Z=6.00, P<0.05].The number of weekly blood glucose tests was reduced(5.6±4.2 vs.5.8±4.3, t=3.17, P<0.05).The weekly time spent interacting with family members increased( P<0.05).There were no significant differences in body weight, sleep time, and number of times of forgetting to take medication per week before and after the outbreak( P>0.05).21.0% of patients had a decrease in the number of hospital visits, and 72.2% of patients experienced low mood and increased adverse psychological emotions during the pandemic. Conclusions:The pandemic has had a negative impact on the management of chronic diseases in elderly diabetic patients, mainly reflected in the reduction of exercise time and blood glucose monitoring.It also affected regular hospital visits of patients, resulting in negative psychological emotions, poor blood glucose control, increased BMI, and aggravated symptoms of chronic complications, compared with their pre-pandemic conditions.

Objective:To investigate blood glucose management in elderly diabetic patients and the factors that affected achieving high rates of achieving it.Methods:The quality of blood glucose control by elderly diabetic patients who visited five community health service centers in Beijing in June 2022 was surveyed retrospectively using a questionnaire.Participants were divided into the high-quality group and not high-quality groups by the criteria of glycosylated hemoglobin(HbA 1C)<7% without hypoglycemia and weight gain.Single factor analysis and multiple-stepwise Logistic regression analysis were used to identify the relative risk of factors affecting the achievement of good glucose management. Results:A total of 287 valid questionnaires were collected, including 80 cases(27.9%)in the high-quality group and 207 cases(72.1%)in the not high-quality group.There were significant differences in sex, course of disease, occurrence of hypoglycemia, number of chronic complications, medication, alcohol consumption, dietary changes, missed medication doses, prolonged outpatient visit intervals, and depressive mood between the two groups( P<0.05).Multivariate stepwise logistic regression analysis showed that insulin use, missed medication ≥ 1 time/week, and prolonged outpatient visit intervals were independent risk factors for good control( P<0.05). Conclusions:The percentage of elderly diabetes patients with good blood glucose control was low.Factors affecting the rate included insulin use, medication compliance, and prolonged outpatient visit intervals.

In order to improve the professional competence of in-service general practitioners and improve the effectiveness of standardized residency training, it is necessary to carry out training with the specific problems encountered in the practice. Taking Gaobeidian Community Health Service Center as an example, the characteristics, process and precautions of the general practice case discussion model based on the real scene of the community health institutions are introduced in the article. It would provide reference for improving the teaching effectiveness and efficiency in the training base of general practice.

OBJECTIVE To explore the extraction process of volatile oil from the stems， leaves and roots of Glehnia littoralis， analyze the chemical components of the volatile oil from the stems， leaves and roots of G. littoralis， and preliminarily evaluate its in vitro antifungal activity. METHODS Based on the steam distillation method， single factor test and orthogonal experiment were conducted to optimize the extraction method of volatile oil from the stems， leaves and roots of G. littoralis. The chemical components of the volatile oil from the stems， leaves and roots of G. littoralis were identified by using gas chromatography-mass spectrometry （GC-MS) technology and their relative contents were calculated. The antifungal activity of volatile oils from the stems， leaves and roots of G. littoralis against Fusarium solani， Fusarium incarnatum， Fusarium oxysporum， Aspergillus parasiticus and Aspergillus flavus was determined by paper diffusion method. RESULTS The optimal extraction process of G. littoralis was solid-liquid ratio of 1∶15， distillation time of 5 hours， and KCl concentration of 15%. Eleven components were identified from the volatile oil of the stems and leaves of G. littoralis， and a total of eight components were identified from the volatile oil of the roots. Ginsenethinol was a common component in the volatile oil from the stems， leaves and roots of G. littoralis， its contents in the stems and leaves， roots were 38.21% and 74.02%， respectively. The volatile oil from the stems， leaves and roots of G. littoralis had a certain E-mail：zwhjzs@126.com inhibitory effect on F. solani， F. incarnatum， F. oxysporum， A. parasiticus and A. flavus， especially volatile oil from the stems and leaves. CONCLUSIONS There is a significant difference in chemical components of the volatile oil between the roots， stems and leaves of G. littoralis， both of which have certain in vitro antifungal activity.