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Objective:To explore the application effect of the "combination of virtuality and actuality" practical teaching on Medical Imaging Equipment. Methods:The 2018 medical imaging technology students of Qiqihar Medical University were taken as the observation group, and the study adopted teaching method of "combination of virtuality and reality" in the practical teaching of Medical Imaging Equipment, including in-kind visit teaching (8 learning hours), experimental box circuit measurement teaching (20 learning hours) and virtual simulation teaching (16 learning hours). Besides, the 2017 medical imaging major students (control group) did not conduct virtual simulation teaching. The teaching effect and student achievement were compared between the two groups, and SPSS 17.0 was used to conduct t test and chi-square test. Results:There was significantly improvement in the practical performance of the students in the observation group compared with the control group ( t=6.44, P=0.007); the teaching satisfaction of the two groups was significantly improved ( χ2=5.25, P=0.022), and the teaching satisfaction degree was 100%. Conclusion:The teaching method of "combination of virtuality and reality" can effectively improve students' hands-on ability, strengthens their cognition of abstract principles, and solves the problems of equipment failure analysis, disassembly and installation of large-scale equipment that cannot be completed in physical teaching.
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Objective To explore the application value of magnetic resonance molecular functional imaging diffusion weighted imaging(DWI) in the identification of pancreatic carcinoma and mass-type pancreatitis of animal model.Methods Each 8 cases of laboratory pancreatic head transplantation tumor model,chronic mass-type pancreatitis model and normal rabbits were selected and performed the MR DWI molecular functional imaging,the b values were 333,667,1 000 s/mm2 respectively.The apparent diffusion coefficients(ADC) of pancreatic carcinoma model,mass-type pancreatitis model and normal pancreas under different b values were observed.Then the change situation of ADC values of pancreatic carcinoma model,mass-type pancreatitis model and normal pancreas under different b values and difference of ADC(DADC) was analyzed.Moreover the differences in molecular diffusion,tissue perfusion among various groups were observed.Results Throughout the study period,the mortality rate of pancreatic head transplantation tumor model was 50%;the mass-type pancreatitis model and 8 normal rabbits were normally survival.The ADC value of pancreatic carcinoma under the same b value was significantly lower than that of chronic inflammation and normal pancreas area.The ADC value in each group was decreased with the increase of b value,and there was significant difference in ADC value when the b value was 333 s/mm2(F=6.662,P=0.014),in the pairwise comparison among groups,the difference between pancreatic cancer and pancreatitis (t=6.773,P=0.003) and between pancreatic cancer and normal pancreas(t=5.883,P=0.016) had statistical significance (P<0.05).The b value was increased,DADC was smaller,the difference change of DADC between pancreatic cancer area and chronic pancreatitis mass area,between pancreatic cancer area and normal pancreatic head area had statistical significance (P<0.05).Conclusion Rationally selecting the molecular functional imaging DWI technology of b value can better distinguish pancreatic cancer from mass-type pancreatitis,which may be promoted and applied in the evaluation of animal pancreatic head cancer model.
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Objective Few reports are seen on the methods of establishing the rabbit model of pancreatic cancer .This study was to compare the effect of Panc-1 cell suspension orthotopic implantation with that of VX-2 tissue orthotopic implantation in construc-ting the rabbit model of pancreatic cancer . Methods Using the random number table method , we divided 30 healthy rabbits into a tissue suspension group ( n=15) and a cell suspension group ( n=15) , VX-2 tissue suspension employed for in-situ implanting in the former group and panc-1 cell suspension utilized in the latter .Then we evaluated the two modeling methods by B-ultrasonography , 3.0T MRI, and CT. Results In the third week after modeling , transpla-ntive metastasis of lots of tumor tissues was observed in the duode-num, colon, appendix, and peritoneal wall in 5 rabbits of the tissue suspension group , but only in the greater omentum of 3 rabbits in the cell suspension group , with high signals of MR T 2 in the posterior gastric body .One case of duodenal metastasis was seen in the cell suspension group , with slightly high signals of MR LAVA in the posterior gastric body .The model of pancreatic cancer was successfully established in all the 15 rabbits of the tissue suspension group , but only in 3 of the cell suspension group .The success rate of tumor im-planting at 3 and 4 weeks was significantly higher in the former ( 46.66%and 100%) than in the latter group ( 6.67%and 20.00%) (P<0.05). Conclusion VX-2 tissue orthotopic implantation is a more feasible and convenient method than Panc -1 cell suspension orthotopic implantation for establishing the rabbit model of pancreatic cancer .
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Objective:To investigate the Philips 256-slice CT coronary angiography images on a variety of forms of coronary artery calcification and coronary stenosis in relation to predict the value of the study of acute coronary events by coronary angiography and coronary artery calcification score.Methods: From May 2014 to February 2015 in the Third Affiliated Hospital of Qiqihar in patients with suspected coronary artery disease, with256-slice spiral CT coronary artery enhancement scanning and DSA, and using software of automatic analysis for coronary artery calcium score analysis, and comparing the accuracy of the two methods of inspection, combined with the clinical data of patients with scientific prediction of acute coronary events.Results: Different forms of coronary artery calcified plaque resulting in local differences in the proportion of luminal stenosis were statistically significant. AS calcium score standard are in grouped in patients with coronary heart disease (CHD),along with increasing calcium score,the risk of coronary heart disease also increase.Conclusion: The diagnosis of coronary artery calcification score of coronary heart disease have a higher value. Calcium score for judging coronary artery stenosis to have high specific degrees, worthy of clinical popularization and application.
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Objective: To discuss the effect of non-contrast-enhanced magnetic resonance angiography in renal artery imaging. Methods:Twenty patients were selected with suspected as the research object, using non-contrast-enhanced MR examination, simultaneously enhanced MR examination, and relatively non-enhanced imaging examination effect on the results for statistical analysis and processing. Results: Non-contrast-enhanced ratio comparing contrast-enhanced, not statistically significant (x2=1.058, P>0.05). Conclusion:Non-contrast MR angiography is an effective, safe, non-invasive, high accuracy of the evaluation of renal artery screening tool, worthy of clinical application.
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Bilingual teaching was taken into the part of computed tomography(CT)teaching in the medical image equipment for 2003 grade image undergraduates.In order to know the students' demands to the bilingual teaching as well as the students' requests in the bilingual teaching implementation process,the questionnaire was carried on to the students;at the same time the bilingual teaching test result was analyzed so as to evaluate its teaching effect.
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Objective To develop a platform of information collection for movements based on ARM7, through which human body movement information can be collected accurately and in time so that deeper scientific research about human body movement can be carried on. Methods By this means, multiplepoint acceleration information can be collected simultaneously through the multinodal network technology, and the information can be processed and retransmitted to computers to be analyzed comprehensively. Results The platform has been used in computer game controlling and good score is given by the tryout person. Conclusion Large quantities of experiment data indicate that this platform possesses higher precision in human body movement information collection and reflect them truthfully. Furthermore, later developments based on this can be applied in fields such as human recovery exercises, physical training, game controlling.