1.The research of calculation of the injury area in the medical jurisprudence image
Journal of Chongqing Medical University 2003;0(05):-
Objective:The legal medical experts usuallycalculate the area ofinjured organs in bodyor other injured items bycountingthe grids in coordination paper.The experiences of the legal medical experts determine the result of this method.The result is subjective and has serious errors.So it is not conductive to the court and case detection.Methods:This paper proposes a method to calculate the injured area by hybrid of K-means algorithm and region growing algorithm.Results:The experiment shows this method is effective to calculate the area of irregular region.Conclusion:The result of this method is more accurate than the method of counting the grids in coordination paper.
2.Preliminary discussion on application of game-learning idea in medical computer teaching
Chinese Journal of Medical Education Research 2013;(8):803-805
Computer science is not important enough in the medical university curriculum and students do not like this course. Therefore, game-teaching methods were employed to enrich teaching methods,to make medical teaching more vivid and to promote medical students' learning interests. In this paper,application of game-learning idea in the medical teaching process was discussed from multiple aspects including the story of the game,incentives of the game and the punitive measures of the game.
3.Exploration of Computer Laboratory Teaching Method in Medical College
Ke DENG ; Xiangqian HE ; Jun FAN
Chinese Journal of Medical Education Research 2006;0(10):-
Computer laboratory teaching is the most important method to train the computer operating skills of medical students.Therefore,we have attempted the student-centered open-laboratory teaching model.This teaching model can train the computer operating skills and creative ability of students in medical college.
4.Market Analysis of Medical Full-Text Database
Wenxiu GUO ; Peiring HE ; Xiuping WANG ; Xiangqian PEI
Journal of Medical Informatics 2009;30(7):45-48
The paper analyzes the supply, demands and market mechanism characteristics of medical full - text databases frequently used in college and university libraries. Some suggestions are proposed according to current status of medical full - text database market, including establishing science and technology information center, discovering more channels to get more free full - text and regulating the market by government guide.
5.Protective effect of safflower solution on warm ischemia reperfusion injury of liver
Xin QI ; Xiangqian CHE ; Chao WANG ; Zhijun HE
Chinese Journal of General Surgery 2001;0(07):-
Objective To study the protective effect and mechanism of safflower solution on warm ischemia reperfusion injury(IRI) of liver in rats.Methods Male Sprague-Dawley rats were randomly divided as 4 groups: Group S(sham group);group I/R(IRI group);group IPC(ischemic preconditioning group);group SPC(safflower solution preconditioning group).The rats were sacrificed at 24 h after reperfusion,serum levels of ALT and AST were measured and HE staining of liver tissues were made to detect rat liver histological changes and grade liver IRI(Suzuki score);apoptosis were monitored by TUNEL;TNF-?,MIP-2 and ICAM-1 mRNA of liver were measured by RT-PCR;NF-?B gene products of liver were detected by Western blotting.The mean value of all the assay tests was compared.Results After 24 h reperfusion,compared with group I/R,the liver function(ALT and AST) in group SPC and group IPC was significantly improved(P
6.Surgical therapy of primary leiomyosarcoma of the inferior vena cava
Yan SUN ; Yuxiang HE ; Xiangqian KONG ; Xing JIN ; Shiyi ZHANG
International Journal of Surgery 2011;38(12):812-814
Objective To discuss the surgical therapy of primary leiomyosarcoma of the inferior vena cava(PIVCLS).Methods Retrospective analysis of was made 5 patients of PIVCLS from Oct 2009 to May 2011 hospitalized in Department of Vascular Surgery,Provincial Hospital Affiliated to Shandong University.All patients underwent surgical resection,combined with reconstruction of bilateral renal vein and distal inferior vena cava using artificial vascular graft.Results Surgical resection was performed successfully in all patients.The mean operation time was 166.6 min,with mean blood loss 1 560 mL.Leiomyosarcoma intruding the inferior vena cava and right renal vein were observed in all patients during operation.The mean size was 12 cm × 10 cm× 8 cm.The diagnosis of PIVCLS in 5 patients was confirmed by postoperative pathologic examination.All patients did not present lower extremity swelling after surgery and discharged from hospital with normal blood (BUN) and (CREA).All patients were administrated with oral warfarin therapy after discharge.No clinical relapse and pulmonary embolism was observed during the follow-up (range 3 months to 12 months).The ultrasound revealed the patency of artificial vascular grafts in all patients.Conclusions Surgical resection combined with reconstruction of bilateral renal vein and distal inferior vena cava using artificial vascular graft is an effective and feasible treatment of PIVCLS.Leiomyosarcoma is completely eliminated and important abdominal viscera are protected well during the procedure because of minimal impact on hemodynamics.The incidence of postoperative pulmonary embolism also decreases obviously.
7.Study on objectively evaluating skin aging according to areas of skin texture.
Gaixin SHAN ; Ping GAN ; Ling HE ; Lu SUN ; Qiannan LI ; Zheng JIANG ; Xiangqian HE
Journal of Biomedical Engineering 2015;32(1):142-145
Skin aging principles play important roles in skin disease diagnosis, the evaluation of skin cosmetic effect, forensic identification and age identification in sports competition, etc. This paper proposes a new method to evaluate the skin aging objectively and quantitatively by skin texture area. Firstly, the enlarged skin image was acquired. Then, the skin texture image was segmented by using the iterative threshold method, and the skin ridge image was extracted according to the watershed algorithm. Finally, the skin ridge areas of the skin texture were extracted. The experiment data showed that the average areas of skin ridges, of both men and women, had a good correlation with age (the correlation coefficient r of male was 0.938, and the correlation coefficient r of female was 0.922), and skin texture area and age regression curve showed that the skin texture area increased with age. Therefore, it is effective to evaluate skin aging objectively by the new method presented in this paper.
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8.Relationships of Raptor and Rictor expression with angiogenesis in colorectal cancer and their clinical significance
Xinyan LI ; Shuhua WU ; Chenbo SUN ; Yangyang LI ; Xiangqian GAO ; Shuang HE
Chinese Journal of Clinical and Experimental Pathology 2017;33(2):129-134
Purpose To detect the expression of Raptor,Rictor,angiogenesis-related factors HIF-lα,HIF-2α and VEGF and to investigate their relationship and significance in eolorectal cancer (CRC).Methods Immunohistochemistry,Western blot and RT-PCR were employed to detect the expression of Raptor,Rictor,HIF-lα,HIF-2α and VEGF in 120 cases of CRC and 60 cases of normal colorectal mucosa.CD34 labeled microvascular density (MVD) was also observed.The correlations between Raptor,Rictor,HIF-1α,HIF-2c,VEGF expression and the patients' clinicopathological features were analyzed.Results The positive rates of Raptor,Rictor,HIF-1c,HIF-2α and VEGF in CRC were significantly higher than those in normal colorectal mucosa (P < 0.05).Raptor and Rictor expression was correlated with the degree of tumor diffcrentiation and lymph node metastasis,respectively.The expression of HIF-1α,HIF2α and VEGF was higher in patients with lymph node metastasis than those in patients without lymph node metastasis (P <0.05).The MVD was higher in patients with Raptor or Rictor positive than that in patients with Raptor or Rictor negative (P <0.05).The expression of Raptor was positively correlated with HIF-1α and VEGF (P < 0.01),the expression of Rictor was positively correlated with HIF-2o and VEGF (P < 0.01),but the expression of Raptor was negatively correlated with Rictor (P<0.01).Conclusion The expression of mTOR core molecules Raptor and Rictor is related to the initiation and development of colorectal cancer and angiogenesis,and they promote angiogenesis in colorectal cancer by different ways.
9.Analysis of subgingival plaque Streptococcus sanguinis levels of the oral cavity in middle-aged and elderly patients with primary microvascular angina
Qi HUANG ; Xiangqian SUI ; Dean PEI ; Wujian HE ; Shisheng WANG ; Xinlan HU
Chinese Journal of Geriatrics 2023;42(12):1468-1471
Objective:To analyze levels of oral Streptococcus sanguinis( Ss)in middle-aged and elderly patients with primary microvascular angina(PMVA)and changes in vascular endothelial function. Methods:In this case-control study, 21 middle-aged and elderly patients diagnosed with PMVA at the Department of Cardiology, Hangzhou Red Cross Hospital between January 2019 and July 2022(the PMVA group)were recruited, with ages ranging from 45 to 80(63.4±12.3)years, while 23 healthy individuals receiving health checkups during the same period served as the control group, with ages ranging from 48-76(62.5±6.5)years.The 21 middle-aged and elderly PMVA patients underwent tests for the measurement of subgingival plaque Ss levels of the oral cavity and levels of plasma vascular von Willebrand factor(VWF)and homocysteine(Hcy). Pearson linear regression analysis was conducted.Results:Ss was not found in subgingival plaque of the oral cavity in the control group, but low levels of Ss were detected in patients from the PMVA group(percentage: 1.754×10 -4; 6.218×10 -5, 4.450×10 -4). The VWF level in the PMVA group was higher than in the control group[(20.22 ± 4.44)μg/L vs.(12.00 ± 6.60)μg/L, t=4.890, P<0.01]. There was no statistical difference in the Hcy level between the PMVA group and the control group[(15.28±6.40)μmol/L vs.(12.86±2.63)μmol/L, t=1.615, P>0.05]. There was no significant correlation between Ss levels and VWF levels in the PMVA group( r=0.038, P>0.05). Conclusions:Ss can be detected in subgingival plaque of the oral cavity in PMVA patients, but not in healthy middle-aged and elderly people.The VWF level in PMVA patients is significantly higher than in healthy people, indicating that vascular endothelial function is impaired in middle-aged and elderly PMVA patients.However, there is no correlation between subgingival plaque Ss levels of the oral cavity and VWF levels in PMVA patients.
10.Radiofrequency ablation for treatment of giant hepatic hemangiomas
Guolin HE ; Bin LIANG ; Hangyu ZHANG ; Xiangqian ZHAO
Chinese Journal of General Practitioners 2018;17(12):1015-1017
The clinical data of 32 patients with giant hepatic hemangioma (GHH) who underwent radiofrequency ablation(RFA)treatment in the PLA General Hospital and Affiliated Peace Hospital of Changzhi Medical College from June 2011 to May 2016 were retrospectively analyzed, including 26 cases treated with laparoscopy-guided RFA and 6 cases treated with ultrasound-guided percutaneous transhepatic RFA+laparoscopy. A Total of 41 lesions were ablated, the diameters of lesions ranged from 2.0 to 12.0 cm. The RFA time ranged from 18 to 72 min and the volume of intraoperative bleeding varied from 5 ml to 150 ml. The incidence of postoperative complications was 56%, which mainly were fever and hemoglobinuria. Patients were followed up for 12 to 60 months; the lesions were incompletely ablated in 3 cases. Radiofrequency ablation is an effective and safe method for the treatment of giant hepatic hemangiomas .