Objective To evaluate and compare the therapeutic effect among intravenous rt2PA thrombolysis,thrombolysis plus delayed intracoronary stenting for acute ischemic stroke onset using 99mTc2ECD SPECT imaging.Methods 45 cases of acute ischemic stroke onset were divided into two groups which were the thrombolysis group( n = 23 ) ,thrombolysis plus delayed stenting group (n = 22), 99mTc2MIBI SPECT imaging was performed 3 weeks after thrombolysis therapy or 1 week after intracoronary stenting. The score of 99mTc2MIBI brain uptake were analyzed semiquantitatively and the total score of myocardial 99mTc2ECD uptake was calculated. Results The scores of the 2 groups were( 12. 4 ± 4. 6) and( 9. 7 ± 3. 8 ) respectively, Significant difference was shown in the thrombolysis plus delayed stenting group compared with the thrombolysis group (P ＜ 0. 01 ). Conclusion 99mTc2ECD SPECT imaging had been proved to be an objective parameter for evaluating the therapeutic effect of the various treatments of AMI. Thrombolysis plus delayed stenting was more effective than thrombolysis.

In this paper the application of DNA fingerprints to evaluate the efficiency of DNA extraction was studied DNA mixtures of landfill leachate and active sludg e were extracted using three different methods and the DNA extraction was evalua ted by ARDRA and RISA fingerprints The results showed that RISA is a effecti ve way to evaluate DNA extraction

Abstract: Objective To study the effect and mechanism of Huaxian Sanjie compound granule on silicosis fibrosis in rats. Methods The specific pathogen free male SD rats were randomly divided into control group, silicosis model group and - interventiongroup,withsixratsineachgroup.Disposableventilatorcombinedwithnon exposedintratrachealdripwasused,the ratsinthesilicosismodelgroupandinterventiongroupweretreatedwith 1.0mLsilica suspensionwithamassconcentrationof 50.0 g/L to establish silicon dust rat model, while the rats in the control group were treated with equal volume of 0.9% sodium chloride solution. After 24 hours of dust exposure, the rats in the intervention group were given 10 mL/kg body weight of Huaxian Sanjie compound granule suspension with a mass concentration of 212.5 g/L by gavage, while the rats in the control group and silicosis model group were given the same amount of 0.9% sodium chloride solution, once a day. Three rats in each groupweresacrificedonthe14thand28thday,respectively,andtheirlungtissueswereseparatedforpathologicalexamination.----Thelevelsofinterleukin6(IL6)andtransforminggrowthfactorβ

Objective: To explore the mechanism and influencing factors of mirror-image artifact of color blood flow (MACBF) due to longitudinal strong echo big interface (LSEBI). Methods: Fifty suspicious patients with MACBF beside the main pulmonary artery and/or the left pulmonary artery undergoing echocardiography examination from November 2018 to April 2019 in Shengjing Hospital of China Medical University were chosen as the subjects. Image characteristics of the MACBF were observed, and mechanism and influence factors of the MACBF were explored with Doppler imaging principle. Results: Of all the subjects with MACBF, 36 subjects occurred only on the left side of the main pulmonary artery, 14 subjects occurred on both the left side of the main pulmonary artery and the left pulmonary artery. The LSEBI was found between the real color blood flow (RCBF) and the MACBF, there was a mirror relationship between the RCBF and the MACBF. The LSEBI on the left of the main pulmonary artery and the left pulmonary artery were the interface of the left lung and pleural. The signal strength of MACBF enhanced as the distance between the blood flow and the LSEBI got closer or the gain of the color blood flow got bigger. Conclusions MACBF may caused by LSEBI beside vessel. The formation of MACBF and its signal strength are influenced by the distance between blood flow and LSEBI and the gain of the color blood flow.

Polyetheretherketone (PEEK) as a new type of thermoplastic engineering plastic, has good biological activity, elastic modulus close to human cortical bone and radiation permeability, and has been widely used in medical field. This study aims to explore the safety and clinical efficacy of using 3D printing personalized PEEK materials to repaire scapular bone defects after bone tumor resection. A total of 6 patients who underwent the implantation of 3D printed PEEK scapular prosthesis from January 2020 to December 2021 in Yunnan Cancer Hospital were retrospectively analyzed. There were 3 males and 3 females, with age ranged from 14 to 52 years. There were 1 case of synovial sarcoma, 1 of Ewing's sarcoma, and 4 of chondrosarcoma. PEEK prosthesis was designed and fabricated based on CT data before surgery. Tumor resection and prosthesis replacement were performed under the premise of ensuring safe surgical boundaries, including 2 cases of total scapular prosthesis replacement and 4 cases of partial scapular prosthesis replacement. The operation time was 90-170 min, and the intraoperative blood loss was 100-400 ml. All 6 patients received satisfactory follow-up, with a tumor progression free survival time of 16-28 months. No tumor recurrence or metastasis was observed, and all patients survived tumor free. At last follow-up, the Constant-Murley shoulder joint score was a minimum of 62 points and a maximum of 68 points. The Japanese Orthopaedic Association's shoulder joint score was 63 points minimum and 78 points maximum. Computer-aided design 3D printing PEEK material prosthesis has certain advantages in the treatment of scapular tumor limb salvage. It has light weight, well adapted, relatively simple installation, good histocompatibility, and can obtain a better appearance and function of the shoulder joint after operation. It can become one of the options for limb salvage treatment of scapular tumor.