|
|
Mapping and homogenity correction of basic magnetic field in tomograph
Žůrek, Dalibor ; Kubásek, Radek (referee) ; Hadinec, Michal (advisor)
This work focuses on a search of available literature in the field of mapping the magnetic field and the degradation of the field gradients. Initially on introduction to basic concepts in the field of magnetic resonance imaging, which are important for understanding the problems and become familiar with the principles of measurement of magnetic fields on the selected surface. Furthermore, there are described two basic measurement techniques, magnetic resonance imaging. The work is analyzed the degradation patterns of magnetic field gradients using the Taylor series and spherical functions. The second part describes how to obtain readings in the tomograph, which together with the previous decomposition of the field then used to describe a numerical calculation of magnetic induction on the surface of a sphere. Values measured and calculated values are compared at the end.
|
|
|
Methods for properties analysis of transmission lines
Žůrek, Dalibor ; Kočiš, Luboš (referee) ; Hadinec, Michal (advisor)
This work focuses on a search of available literature on the theory of transmission lines and verify the possibility of simulation processes on these lines using a suitable simulation program. Initially, for the introduction to the parameters and the phenomenon that characterize the line and are important for understanding the issue. These parameters are then measured and compared with traces from the simulation in program PSpice. In another part of the work, the reader is familiar with the basics of reflectometry and fault detection capabilities on transmission lines with the basic reflectometry methods TDR and FDR, as well as with other methods of OTDR, MSR, and PD-FDR. For the TDR, FDR and MSR methods were made experimental measurements with a view to determining the position of the various types of faults on the tested leadership.
|
|
|
Mapping and homogenity correction of basic magnetic field in tomograph
Žůrek, Dalibor ; Kubásek, Radek (referee) ; Hadinec, Michal (advisor)
This work focuses on a search of available literature in the field of mapping the magnetic field and the degradation of the field gradients. Initially on introduction to basic concepts in the field of magnetic resonance imaging, which are important for understanding the problems and become familiar with the principles of measurement of magnetic fields on the selected surface. Furthermore, there are described two basic measurement techniques, magnetic resonance imaging. The work is analyzed the degradation patterns of magnetic field gradients using the Taylor series and spherical functions. The second part describes how to obtain readings in the tomograph, which together with the previous decomposition of the field then used to describe a numerical calculation of magnetic induction on the surface of a sphere. Values measured and calculated values are compared at the end.
|
|
|
Methods for properties analysis of transmission lines
Žůrek, Dalibor ; Kočiš, Luboš (referee) ; Hadinec, Michal (advisor)
This work focuses on a search of available literature on the theory of transmission lines and verify the possibility of simulation processes on these lines using a suitable simulation program. Initially, for the introduction to the parameters and the phenomenon that characterize the line and are important for understanding the issue. These parameters are then measured and compared with traces from the simulation in program PSpice. In another part of the work, the reader is familiar with the basics of reflectometry and fault detection capabilities on transmission lines with the basic reflectometry methods TDR and FDR, as well as with other methods of OTDR, MSR, and PD-FDR. For the TDR, FDR and MSR methods were made experimental measurements with a view to determining the position of the various types of faults on the tested leadership.
|
guest ::
RSS feed.