Objective To investigate the role of pulmonary ventilatioa/perfusion imaging in evaluating thrombolytic therapy in pulmonary embolism (PE).Methods Pulmonary ventilation/perfusion imagng was performed before and one week and three months after thrombolytic therapy in 43 patients with acute PE.Results Among 421 abnormal pulmonary segments in 43 PE cases,199(47.3%) and 231(54.9%) segments were restored to normal 1 week and 3 months later (P<0.05).Of two groups,more abnormal pulmonary segments were restored to normal in those with less than one week's onset (P<0.01).Conclusion As a non-invasive diagnostic method, pulmonary ventilation/perfusion imaging plays an important role in evaluating the therapeutic effectiveness of thrombolytic therapy in patients with PE.

In order to evaluate our teaching results and improve the teaching quality,we designed this study to analyze the scores of nuclear medicine examination for the students of 2001 majoring in clinical medicine.There were 345 students participating in the examination.The results showed that the scores was Gassion distribution,the average score was 82.26,and the difficulty and discrimination of the test paper were appropriate.This analysis method as an objective index can be used to evaluate the response of teaching in nuclear medicine as well as improve the quality of test paper.

Objective:To construct the impact factor model of primary traditional Chinese medicine (TCM) health management service quality, and put forward corresponding policy suggestions.Methods:In this cross-sectional study, the typical sampling and random sampling method were used to select 39 insiders of primary TCM health management service from 15 communities in Zhejiang Province from August to October in 2022. Interviews on service projects, implementation effects and impact factors were conducted, the three-level coding of interview record was carried out using the grounded theory research method, a model of impact factor for health management service quality of basic TCM was constructed, and the corresponding policy recommendations were put forward.Results:Based on the open coding of 39 original interview data, a total of 516 reference points were obtained, and 53 initial concepts related to the topic were formed and summarized into 17 first-level categories. Through the summary of main axis coding, 6 main categories of “policy environment”，“health literacy”，“community orientation”，“capacity building”，“health preference” and “conflict of interest” were extracted. The logical correlation between the six main categories were analyzed with selective coding, an impact factor model was constructed in accordance with the story line of factors affecting service quality. The story line of this model was as follows: first, the policy environment was the external guarantee of community TCM service quality; second, as the demand-side of the services, the health literacy and requirement of residents was the regulatory factor for service quality; in addition, the community played the role of the supply-side of the services, the service ability construction was the key factor, and the community functions and target orientation was the internal driving factor, meanwhile, the internal/external conflicts of interest had a negative constraint on the service quality.Conclusions:The guarantee intensity of external policy environment is limited, the service demand side pays insufficient attention, and the service supply side functions are absent at the present stage. It is necessary to improve the external policy environment, deepen the connection between supply and demand sides in the field of TCM health service, promote the capacity building of TCM service at the grass-roots level, balance the interests of relevant departments of TCM service, in order to improve the quality of TCM health management service at the grass-roots level.