2.Data analysis for relationship between aging and cardiothoracic ratio based on C-V segmentation algorithm.
Yuanyuan HOU ; Yi LIU ; Ping ZHOU
Journal of Biomedical Engineering 2014;31(3):547-551
Cardiac enlargement is an important symptom of vascular and heart disease. The cardiothoracic ratio (CTR) is an important index used to measure the size of heart. The aim of this study was to assess the relationship between aging and cardiothoracic ratio. This paper also presents an improved C-V level set method to segment lung tissue based on X-ray image, which used to automatically compute CTR. In the investigation carried out in our school, we got more than 3 120 chest radiographs from medical examination of the working population in Beijing, and we systematically studied the effects of age and gender on the CTR to obtain reference values for each group. The reference values established in this study can be useful for recording and quantifying the cardiac enlargement, so that it may be useful for calling attention to the cardiovascular diseases and the heart diseases.
Aging
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Algorithms
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Cardiomegaly
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pathology
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Heart
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diagnostic imaging
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Heart Diseases
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diagnosis
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Humans
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Lung
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diagnostic imaging
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Myocardium
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pathology
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Radiography, Thoracic
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methods
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Reference Values
3.Study on bacteriostatic effect of water-soluble chitosan
Yanru LIU ; Ping YU ; Yi ZHENG
Chinese Journal of Marine Drugs 1994;0(02):-
This paper observed the influence of water-soluble Chitosan on the growth of bacteria cultured in vitro with solid medium. The results showed that Escherichia coli、staphylo- coccus aureus、Bacillus subtillus、Sarcina and Actinomyces5406 could be inhibited to different degrees by Chitosan with certain concertrations. The corresponding MIC Were 0. 5%、0. 3%、 0. 5%、0. 3% and 0. 5%. The results also showed that Chitosan had stable antibacterial action after being treated with heat and it could keep instant flavouring kelp fresh and antiseptic.
4.A Study on Regularity of Compound Herbal Formulae for Renal Fibrosis Based on Literature
Li QI ; Tao YI ; Xiaoning WANG ; Ping LIU ; Chenghai LIU
Chinese Journal of Information on Traditional Chinese Medicine 2014;(12):34-37
Objective To study the regularity of compound herbal formulae for renal fibrosis (RF). Methods Compound herbal formulae published about the treatment of RF in databases of Chinese Science and Technology Periodical Database, CNKI, Chinese Biomedical Literature Service System, and Wanfang Databasewere searched and collected. A database was established for data mining by using frequency analysis, cluster analysis and association rule analysis. Regularity of key herbs and groups of herbs was discussed. Results There were 38 prescriptions (totally 95 herbs) in the compound herbal formulae for RF, and the total frequency was 362 times. High frequency herbs under cluster analysis were classified into 3 clusters including tonic, hemorheologic agent and promoting diuresis drugs. The rules in pair of herbs were 18, and rules in group of herbs were 31 (three or four medicinal herbs) by using association rule analysis. Conclusion Tonifying promoting blood circulation and removing blood stasisis a common sense for treating RF.
5.Treatment of concave temporal area by fat granule auto-transplantation
Ping LIU ; Yi LIU ; Xiaoping ZHANG ; Limei MA ; Lanping ZHANG
Chinese Journal of Medical Aesthetics and Cosmetology 2009;15(1):17-19
Objective To summarize the clinical experience of fat granule injection for auto-trans-plantation in the treatment of concave temporal area. Methods The fat granule was extracted with injec-tor and injected into temporal area after washing and purging, but it might be necessany for patient to be injected extra 20 % fat autograft due to his absorptive effect. Results Satisfactory results were obtained in all patients. Transplantation was carried out one time in 139 cases, two times in 9 cases, and three times in 4 cases. 6 - 28 ml fat granule was injected in one site at each time. Conclusion Fat granule injec-tion for auto-transplantation is a safe and ideal method to treat concave temporal area.
6.Review of juvenile myopia risk factors
Yi-Fan, LIU ; Zhi-Yan, JIA ; Ping, LIU
International Eye Science 2016;16(7):1276-1278
Myopia is the most important cause of visual impairment in adolescents. However, its etiology is complex. In recent years, a large number of epidemiological studies have been done on risk factors of myopia. Most of these studies is cross- sectional study, not longitudinal cohort study. Overall, the incidence of myopia is the result of the interaction between genetic susceptibility and environmental exposure. This review is about the risk factors for myopia.
7.Foreskin-deglove and shaft-fix procedure combined with Z-plasty of penis and scrotum skin in treatment of concealed penis
ping, PING ; yi-dong, LIU ; yi-ran, HUANG ; wei-jing, YE
Journal of Shanghai Jiaotong University(Medical Science) 2006;0(09):-
Objective To explore the efficacy of foreskin-deglove and shaft-fix procedure combined with Z-plasty of penis and scrotum skin in the treatment of concealed penis. Methods Fifty-eight patients diagnosed as concealed penis were included in the study.All of them underwent the foreskin-deglove and shaft-fix procedure.Foreskin was degloved from 5 mm to 10 mm proximal to corona deep to the root,and bilateral tunica albuginea at this level was sutured to suprapubic scarpas' fascia.Z plasty of penis and scrotum skin was applied to cover penile shaft. Results After follow-up for 6 to 12 months,there was no recurrent retraction of the penile shaft,and all the patients were satisfied with the appearance of penis after plastic surgery.Edema of prepuce occurred in 2 patients,and completely regressed in 2 to 3 months.There was no incision scar hyperplasy,and the function of urination and erection were normal. Conclusion Foreskin-deglove and shaft-fix procedure combined with Z-plasty of penis and scrotum skin can resolve pathologic problems of concealed penis and has favourable aesthetic results with less complications.It is easy to perform and is an ideal procedure in the treatment of concealed penis.
8.The significance of microvessel density and CD34 expression in nasopharyngeal carcinoma
Li YAO ; Xing LU ; Ping-Ping LIU ; Hong-Yi HU ; Feng-An LIU ;
Chinese Journal of Primary Medicine and Pharmacy 2006;0(10):-
Objective To study clinicopathologic significance of microvessel density(MVD)and the expres- sion of CD34 in nasopharyngeal carcinoma.Methods Using Elivision Plus immunohistochemistry method.50 cases of nasopharyngeal carcinoma and 15 cases of inflammation nasopharyngeal tissues were stained with CD34.Results In comparison with inflammation nasopharyngeal tissues MVD(9.23?1.84),the MVD in nasopharyngeal carcino- ma(21.92?7.80)was significantly higher(P
9.Laparoscopic splenectomy for idiopathic thrombocytopenic purpura:a report of 21 cases
Zhen LIU ; Yi WANG ; Ping CHEN ; Guangyi WANG
Chinese Journal of General Surgery 2000;0(12):-
Objective To evaluate the therapeutic efficacy of laparoscopic splenectomy (LS) for patients with idiopathic thrombocytopenic purpura (ITP) and to investigate the change of parameters of platelets.Methods Twenty-one patients with ITP after LS were studied, including the following paramenters: the operation time, intraoperative blood loss and postoperative complications, and compared perioperative platelet count(PC), packed platelet volume(PPV), mean platelet volume(MPV), and platelet distribution width (PDW) with the postoperative results.Results The mean operation time was 1.5 h. Intraoperative mean blood loss was 60 mL, postoperative hospitalization time was 5 d and with no case of delayed healing of incision. Accessory spleen was found in 19 % of patients . The incidence of complication was 4.8 %, and with no deaths. Platelet count and packed platelet volume increased with fluctuation, but mean platelet volume and platelet distribution width decreased with fluctuation. The parameters were in multipoint dynamic equilibrium with fluctuation and coordinated restoration. All patients were followed-up. No case had recurrence at 1.5~5.5 y, and platelet-associated antibody was in normal range. Bone marrow examination was normal.Conclusions The treatment of ITP with LS is safe and effective. The selection of therapeutic plan should depend on the changes of platelet parameters.
10.Clinical significance of microrna-625 expression in esophageal squamous cell carcino-ma
Shasha LIU ; Dongli YUE ; Xinfeng CHEN ; Yu PING ; Yi ZHANG
Chinese Journal of Clinical Oncology 2016;43(18):825-829
Objective: To analyze the correlation of miR-625 expression with clinicopathological characteristics in esophageal squa-mous cell carcinoma (ESCC) and to explore the effect of miR-625 on the migration and proliferation of ESCC cells. Methods:The expres-sion level of miR-625 was determined through real-time PCR in 86 paired human ESCC tissue specimens and tumor-adjacent normal esophageal tissue specimens, ESCC cell lines, and esophageal epithelial cell line. The associations of miR-625 expression with clinico-pathological characteristics and survival in ESCC patients were analyzed. Transwell and CCK-8 assays were performed to examine the effect of miR-625 expression on migration and proliferation of ESCC cells. Results:Compared with tumor-adjacent normal specimens, miR-625 was significantly downregulated in ESCC tissue specimens (P<0.05). MiR-625 expression was decreased in ESCC cell lines com-pared with human esophageal epithelial cell lines (P<0.05). Lower miR-625 expression was associated with poorer prognosis and sur-vival. The migration and proliferation abilities of ESCC cells were inhibited by miR-625 overexpression (P<0.05). Conclusion:MiR-625 acts as a tumor suppressor gene in the development and progression of ESCC, suggesting that miR-625 may serve as an efficient prog-nosis biomarker and a potential therapeutic target for ESCC.