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Magnetic Resonance and its Electromagnetic Essence
MOLÁKOVÁ, Markéta
This fact is reflected in the aims of the thesis, which lie in using the Curricular Process Theory and the already researched quantum dimension of magnetic resonance for defining the electromagnetic foundation of magnetic resonance in such a form that would be suitable for students of "Radiology assistant" and other related programs. Considering the set aims and the use of applied quantitative research, the thesis presents the following hypotheses: 1) It is possible to create an educational text for students of "Radiology assistant" and related study programs by applying the Curricular Process Theory. 2) The distribution of respondents' knowledge will have a theoretical distribution similar to the normal distribution. First, it was necessary to analyse the current state of research on the subject of "Electromagnetic foundation of magnetic resonance for radiology assistants" based on the Curricular Process Theory. The present study examines the Electromagnetic Field Theory, especially the description and deduction of Maxwell's four equations for electromagnetic field, defines mathematical operators needed for describing Maxwell's equations, describes the causes of changes in electric and magnetic fields (wells and vortices), and also mathematically proves that the electromagnetic field spreads in the air a s a wave. Then, it was needed to adjust the form of these physical facts to students of "Radiology assistant" and other related study programs. It resulted in creating a simple educational text (see Appendix 1), whose suitability for the educational target group was verified by a statistical evaluation. Consequently, the first hypothesis that it is possible to create an educational text for students of "Radiology assistant" and related study programs by applying the Curricular Process Theory was confirmed. The functionality of the educational text was verified by an experimental seminar. The seminar was organised for the students of "Radiology assistant" study program at The Faculty of Health and Social Sciences at the University of South Bohemia in České Budějovice and it was accompanied by a PowerPoint presentation. The students who did not participate in the seminar were sent the educational text (and test) in the electronic form. In order to verify the knowledge gained during the experimental seminar and from the educational text, the defined electromagnetic foundation (educational text) was reflected in a test with 13 questions with four alternative options for each there was only one correct option for each question. The test was taken by respondents and the results were statistically evaluated. The type of research used in the thesis is applied quantitative research. The verification of the hypotheses was based on the use of appropriate methods of descriptive and mathematical statistics as well as the use of non-parametric testing, the so called Pearson Chi-Square test (Goodness of Fit). On the whole, 35 tests were processed. Empirical frequency distributions obtained by scoring the tests were matched with the so called Gaussian distribution. Thanks to the use of non-parametric testing, it was possible to confirm the second hypothesis that the distribution of respondents' knowledge will have a theoretical distribution similar to the normal distribution. Therefore, the statistical evaluation confirmed that the educational text is suitable for the needs and possibilities of the respondents and their knowledge distribution is close to the normal distribution. The acquired results show that the knowledge of the respondents was in agreement with the expected assumption of the normal distribution.
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