1.Spinal Sequence Automatic Stitching Based on Biorthogonal Wavelet Transform and Feature Matching
Xue MENG ; Zhensheng DENG ; Xin GUO
Chinese Journal of Medical Physics 2010;27(2):1726-1730
Objective: An automatic seamless stitching method with spinal X-ray image sequence is presented in this paper. Methods: First, biorthogonal wavelet transform is used to implement decomposing of the multi-resolution and the effective edge of the image can be extracted by this method combined with Canny operator. The feature points of the image can be obtained by calculating the edge contour matrix E and the value matrix H. Second, the roughly matching of feature points can be achieved by using Normalized Cross Correlation (NCC) algorithm and the random sample consensus (RANSAC) algorithm is introduced to remove false matching pairs and to achieve precisely matching. Third, the image sequence is automatically sorted with the improved genetic algorithm to achieve automatic stitching. At last, the weighted average fusion algorithm is appfied to achieve smooth and seamless image stitching. This algorithm is robust for the weak-contrast X-ray image sequence. Results: Experimental results show that high-quality and fast image sequence stitching can be obtained automatically by using this method. Conclusions: To a certain extent, it overcomes the shortcomings of X-ray image sequence such as the strong image noise, concentration of values ofpixels, blurred boundaries, large overlap area and the sequence constraint, and therefore it may be applied to in medical imaging field widely.
2.Status of needs, contents and methods of environmental health educational courses among undergraduates
Furong DENG ; Xin WANG ; Xiuling LU ; Xinbiao GUO
Chinese Journal of Medical Education Research 2011;10(5):554-556
Part of undergraduates were recruited from the universities round Xueyuan Road, Haidian district in Beijing. Self-administered questionnaire were conducted, on the basis of the status quo of students in understanding the environmental and health knowledge, attitude, behavior (KAP), to analyse the need for environmental health educational courses setting among undergraduates and to afford related suggestions on contents and methods for the course.
3.The correlations of FcεRI-βgene polymorphisms with clinical manifestations and prognosis inwheezing infants
Suhua GUO ; Ying LIN ; Liyun LI ; Xin WANG ; Qundi DENG
The Journal of Practical Medicine 2015;(19):3213-3215
Objective To investigate the correlations of FcεRI-βgene polymorphisms with clinical manifestation and prognosis inwheezing infants. Methods One hundred and forty-six wheezing infants were recruited and divided into two groups by FcεRI-βdetection using Fluorescent quantitative PCR: Risk genotype group (n = 41) or normal genotype group (n = 105). The genotype distributions,clinical manifestation and asthma,and morbidity were analyzed and compared between the two groups. Results FcεR1 E237G AG/GG was more serious than FcεR1 AA in wheezing infants. (χ2 = 14.202; P = 0.003). No significant differences were found in AS morbidity between the two groups after two years follow-up (χ2 = 2.25;P = 0.13). Conclusion FcεRI-βgene polymorphisms are strongly related with infantile wheezing. Th risk genotype may be the severity of asthma but may not be the major influencing factor of asthma.
4.Analysis of curative effect of elder C type tibial plateau fractures patients with open reduction and internal fixation with bilateral plate
Xin XU ; Xiong YUN ; Yingsheng DENG ; Zhi HUANG ; Ying GUO
Chongqing Medicine 2013;(23):2742-2744
Objective To analyze the results of treatment of complicated tibial plateau fractures with open reduction and internal fixation with bilateral plates .Methods 29 elder patients with C type tibial platform fractures underwent internal fixation with bilat-eral plates and bone grafting .Fixation with bilateral plates was performed during operation with dynamic compression plate or 1/3 Tubular steel plate placed medially and the dissection plate or LISS system ones inserted laterally after the underlying separation . Meanwhile ,sufficient bone grafting during operation could effectively support reduction of articular surface .Results All patients were followed up of an average of 13 .8 ± 2 .43 months .According to Rasmussen score standard ,the excellent and good rate was 82 .7% .There was significant difference of TPA and PA between postoperation and postoperation one year later .Conclusion It is a simple and effective method to treat complicated elder tibial platform fractures with bilateral plates .It will improve the effect and re-duce complications significantly to perform sufficient bone grafting intraoperatively ,and make the drainage unobstructed and do the early functional exercises postoperatively .
6.Animal models of cerebral venous and sinus thrombosis
Ying WEI ; Xinbin GUO ; Sheng GUAN ; Xin DENG ; Zibo WANG ; Xiaoke LU ; Yanhua DONG
International Journal of Cerebrovascular Diseases 2017;25(3):281-284
Cerebral venous and sinus Thrombosis (CVST) is a rare ischemic cerebrovascular disease,the lesions of 60% patients are involved in multiple venous sinus,of which the superior sagittal sinus thrombosis is most common.The pathogenesis and pathophysiology of CVST has not yet been fully elucidated,and the establishment of stable and ideal animal models can provide a basis for the study of its development,prognosis and efficacy assessment.This article summarizes the characteristics and advantages of several available CVST models,but each method has its own limitations.Therefore,the establishment of a more ideal animal model will help to fully understand the pathogenesis and pathological process of CVST.
7.Short-time effects of inhalable particles and fine particles on children's lung function in a district in Beijing
Xin WANG ; Furong DENG ; Shaowei WU ; Yingdong ZHENG ; Xiuming SUN ; Hong LIU ; Xinbiao GUO
Journal of Peking University(Health Sciences) 2004;0(03):-
Objective:To study short-term effects of PM10(particulate matter of aerodynamic diameter
8.Innovation Elements Being in Harmony for Fundamental Medical Physics Experiment
Shi-Guo CHEN ; Xin-Hua LIAO ; Ling DENG ; Xu NING ; Xian-Guang MA ;
Chinese Journal of Medical Education Research 2006;0(10):-
This paper presents the detail methods which innovation activities are in harmony for fundamental medical physics ex- periment teaching without increasing course period and new equipment.
9.Assessment of Exposure to PM2.5,CO and O_3 for Elders in a Community in Winter in Beijing Using Microenvironment Measurements and Time-Activity Data
Shao-Wei WU ; Fu-Rong DENG ; Xin-Biao GUO ; Al ET ;
Journal of Environment and Health 2007;0(09):-
Objective To estimate the exposure level of PM2.5,CO and O_3 in the elders in a community in Beijing.Methods The concentrations of PM2.5,CO and O_3 in 10 main activity sites of the elders were measured and 24 h time-activity data of 30 elders was collected by recording of activity log paper,Nov.28,2007—Jan.17,2008.Results The 24 h average exposure concentrations of PM2.5,CO and O_3 for the elders were(146.54?6.60)?g/m~3,(2.67?0.18)mg/m~3 and(32.30?2.79)?g/m~3, respectively,there was no significant difference in the exposure level of PM2.5 and O_3 between male and female elders except CO (P
10.Therapeutic Observation of Acupuncture plus Auricular Point Sticking forPrimary Dysmenorrhea
Xia DENG ; Xiao XUE ; Guoran PENG ; Chun CHEN ; Panan WANG ; Xin GUO ; Kaipeng LIANG
Shanghai Journal of Acupuncture and Moxibustion 2015;(10):955-957
ObjectiveTo compare the clinical efficacies of acupuncture, auricular point sticking, and the combination of the two methods in treating primary dysmenorrhea by using randomized controlled method, for selecting the optimal treatment in treating primary dysmenorrhea, and to explore the nursing care method for primarydysmenorrhea from the perspective of Chinese medicine. MethodNinety patients with primary dysmenorrhea were randomized into an acupuncture group of 30 cases (group A), an auricular point sticking group of 30 cases (group B), and a combined group of acupuncture plus auricular point sticking of 30 cases (group C). The patients were given treatment 7 d ahead of the menstrual period, a menstrual cycle as a treatment course, totally for 3 courses. The pain score and clinical efficacies were observed and compared among the three groups for statistical analyses.Result The pain scores were significantly changed in the three groups after intervention (P<0.05), there were significant differences in comparing the pain scores among the three groups after intervention (P<0.05), group A and C were superior to group B (P<0.05), and group C was superior to group A (P<0.05). The total effective rate was 96.7% in group A, versus 93.3% in group B and 100.0%in group C, and the rank-sum test showed thatZ=7.675,P=0.022 (P<0.05).ConclusionThe three treatment methods are all effective in treating primary dysmenorrhea, while combining acupuncture and auricular point sticking can approach the optimal effect.