The main objective was to construct a 16-channel anterior cardiac array for 3T MRI capable of ⅓ mm pixel resolution across the right coronary artery, while achieving favourable parallel imaging characteristics. Based on FDTD simulations, improved performance relative to previous 16-channel designs was predicted by focusing small elements directly above the ROI, improving SNR behaviour, and using larger peripheral loops for maintaining overall parallel imaging characteristics, verifying the primary project hypothesis. Within the cardiac region, average simulated SNR gains of 62% and 129% were found for acceleration factors R=1 and R=4 respectively, compared to an industry design. Experimental analysis verified that ⅓ mm resolution is achievable within the right coronary artery, while also applying the benefits of parallel imaging up to R=3. This is a crucial step towards improving cardiac diagnostics. In addition, acceleration factors up to R=5 are achievable on a human torso, offering significant imaging time reductions. For an anterior section of the cardiac region, simulated results predicted an average SNR gain of 221%, where 460% gain was found experimentally. / May 2007

The main objective was to construct a 16-channel anterior cardiac array for 3T MRI capable of ⅓ mm pixel resolution across the right coronary artery, while achieving favourable parallel imaging characteristics. Based on FDTD simulations, improved performance relative to previous 16-channel designs was predicted by focusing small elements directly above the ROI, improving SNR behaviour, and using larger peripheral loops for maintaining overall parallel imaging characteristics, verifying the primary project hypothesis. Within the cardiac region, average simulated SNR gains of 62% and 129% were found for acceleration factors R=1 and R=4 respectively, compared to an industry design. Experimental analysis verified that ⅓ mm resolution is achievable within the right coronary artery, while also applying the benefits of parallel imaging up to R=3. This is a crucial step towards improving cardiac diagnostics. In addition, acceleration factors up to R=5 are achievable on a human torso, offering significant imaging time reductions. For an anterior section of the cardiac region, simulated results predicted an average SNR gain of 221%, where 460% gain was found experimentally.

The main objective was to construct a 16-channel anterior cardiac array for 3T MRI capable of ⅓ mm pixel resolution across the right coronary artery, while achieving favourable parallel imaging characteristics. Based on FDTD simulations, improved performance relative to previous 16-channel designs was predicted by focusing small elements directly above the ROI, improving SNR behaviour, and using larger peripheral loops for maintaining overall parallel imaging characteristics, verifying the primary project hypothesis. Within the cardiac region, average simulated SNR gains of 62% and 129% were found for acceleration factors R=1 and R=4 respectively, compared to an industry design. Experimental analysis verified that ⅓ mm resolution is achievable within the right coronary artery, while also applying the benefits of parallel imaging up to R=3. This is a crucial step towards improving cardiac diagnostics. In addition, acceleration factors up to R=5 are achievable on a human torso, offering significant imaging time reductions. For an anterior section of the cardiac region, simulated results predicted an average SNR gain of 221%, where 460% gain was found experimentally.

Doctor's dissertation at Bonn (Ger.)--universität.

Inaug.-Diss. Berlin.

Inaug.-Diss.--Leipzig. / Lebenslauf. "Literaturverzeichnis": p. 87-90.

Thesis (M.S.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 19-20).

Thesis (Ph. D.)--Cornell University. / "Reprint from the American Journal of Psychology, vol. X, no. 1."

Thesis (Ph. D.)--Cornell University, 1920. / "From the Psychological laboratory of Cornell university." "Reprinted from the American journal of psychology, January, 1921, vol. XXXII."

Abstract The purpose of this study is to explore the political attitudes of Senior high school (including professional school) students in Kaohsiung as well as the relationship between the factors of school and family and students¡¦ political attitudes. The subjects of this study are Senior high school students in Kaohsiung.The sampling method is to use stratified cluster sampling method. The 626 students from eight schools were sampled as effect samples. The questionnaire was used to investigate the political attitudes of students based on their gender, their school attribute, and their grade level. Additionally, the questionnaire was also used to explore the relationship between students¡¦ political attitudes and the factors of school and family, including teachers¡¦ styles of discipline, peer relationship, the atmosphere of school organization, club activity and parenting style. Political attitude scales include five types: attitude towards public affairs, sense of political trust, sense of citizen duty, sense of political efficacy, and concept of democracy. The questionnaire is constructed with reference to a review of related literature and is developed by the researcher. The data is analyzed by frequency distribution, percentile, average, standard deviation, t-test, Pearson product-moment correlation, and stepwise multiple regression analysis. The results are summarized as follows: 1. The political attitudes of Senior high school students in Kaohsiung are positive. The results of ¡§ attitude towards public affairs¡¨, ¡§sense of citizen duty¡¨, and ¡§concept of democracy¡¨ are better. The average scores are 3.59 , 3.89 and 3.99.¡@The results of ¡§sense of political trust¡¨and¡§sense of political efficacy¡¨ are less satisfactory.¡@The scores are 2.65 and 2.90. 2. There is no significant difference on political attitudes of students between different genders. 3. There is significant difference on political attitudes of students between different school attributes. Regular high school students were more active than professional school students. 4. There is significant difference on political attitudes of students between different grade levels. 5. There is a significant positive relationship between students¡¦ political attitudes and their teachers¡¦ styles of discipline, peer relationship, atmosphere of school organization, club activity and parenting style. That is, students hold more positive political attitudes when teachers¡¦ styles of discipline are more democratic, peer relationship is closer, atmosphere of school organization is more democratic , club activities are more democratic, and parenting style is more democratic. 6. When political attitude is the independent variable, significant predicting ability is demonstrated in the following five variables¡G¡§ atmosphere of school organization¡¨, ¡§parenting style¡¨,¡§school attributes¡¨ ,¡§peer relationship¡¨, and ¡§association activity.¡¨ Based on the results of this study, the following suggestions are provided: 1. Teachers are suggested to encourage students to express their opinions in order to form democratic atmosphere of school organization. 2. Parents should actively show their concerns about children, accommodate their emotion, and love them. Parental disciplinary style should be democratic. 3. Students should establish good peer relationship and learn inter-personal relationship. 4. Teachers are suggested to encourage students to participate student clubs in order to promote a democratic culture on campus.