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Image processing of MRI
Němcová, Simona ; Jiřík, Radovan (referee) ; Krátká, Lucie (advisor)
This thesis deals with the cartilage imaging using magnetic resonance. At first, there is mentioned physical principle of the magnetic resonance phenomenon and the most commonly used excitation sequences, followed by the description of the 9.4 T MR imaging system Bruker BioSpec 94/30 USR, which was used for measurement in the practical part. The next part is dedicated to the composition of cartilages and describes the temporomandibular joint, due to its suitability as an object for cartilage imaging. The series of MR scans of temporomandibular joint were taken with different acquisition parameters and evaluated by program designed through the MATLAB software. The program can be used for viewing scanned images, evaluating their contrast and determining the T1 relaxation time of the tissues by creating T1 maps.
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Basic measurement techniques of the magnetic resonance
Toufarová, Tereza ; Bartušek, Karel (referee) ; Steinbauer, Miloslav (advisor)
This thesis deals with basic principles of magnetic resonance. It describes this phenomenon from the point of view of quantum mechanics and classic physics. Both approaches differ considerably, however, it is necessary to combine both to describe the phenomenon. The main focus of the thesis is analysis of individual measuring methods and their mutual comparison. The methods described are Spin-Echo Method, Saturation Recovery Technique, Inversion Recovery Technique and Grandient-Echo Method. This document contains a theoretical description of imaging techniques and processing of pictures gained by practical application of the methods.
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Analysis of the celestial maps
Považan, Juraj ; Bayer, Tomáš (advisor) ; Čábelka, Miroslav (referee)
Analysis of the spheric map Abstract The master thesis deals with cartometric analysis of maps of the celestial sphere using image correlation. The main goal of this work was to design an algorithm for the identification of stars on old maps of the starry sky using a normalized cross-correlation and the application of a median and Gaussian filter. The analysis itself takes place on small scale maps or. the whole visible sky divided into two hemispheres, shown in a stereographic projection and also takes into account the influence of the cartographic map display on the position of objects, which it tries to eliminate by Helmert transformation, and also the influence of precession, which affects the position of astronomical objects over time. The accuracy of the drawing of the positions of the objects is evaluated by means of isolines drawn on the basis of positional coordinates. The algorithm was implemented in the Matlab programming environment and old maps from the Mapová sbírka PřF and the 5th edition of Bright Star Cataloque were used as test data, which contains the positions of stars with precisely determined coordinates. The achieved results are presented in the form of images of captured objects and created isolines over old maps as well as tables of the three nearest neighbors of the most important...
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Image processing of MRI
Němcová, Simona ; Jiřík, Radovan (referee) ; Krátká, Lucie (advisor)
This thesis deals with the cartilage imaging using magnetic resonance. At first, there is mentioned physical principle of the magnetic resonance phenomenon and the most commonly used excitation sequences, followed by the description of the 9.4 T MR imaging system Bruker BioSpec 94/30 USR, which was used for measurement in the practical part. The next part is dedicated to the composition of cartilages and describes the temporomandibular joint, due to its suitability as an object for cartilage imaging. The series of MR scans of temporomandibular joint were taken with different acquisition parameters and evaluated by program designed through the MATLAB software. The program can be used for viewing scanned images, evaluating their contrast and determining the T1 relaxation time of the tissues by creating T1 maps.
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Basic measurement techniques of the magnetic resonance
Toufarová, Tereza ; Bartušek, Karel (referee) ; Steinbauer, Miloslav (advisor)
This thesis deals with basic principles of magnetic resonance. It describes this phenomenon from the point of view of quantum mechanics and classic physics. Both approaches differ considerably, however, it is necessary to combine both to describe the phenomenon. The main focus of the thesis is analysis of individual measuring methods and their mutual comparison. The methods described are Spin-Echo Method, Saturation Recovery Technique, Inversion Recovery Technique and Grandient-Echo Method. This document contains a theoretical description of imaging techniques and processing of pictures gained by practical application of the methods.
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Mathematical Methods and Exercises in Astronomy
BROM, Jiří
The aim of this thesis is to create collections of examples for the subject Astronomy taught for students of pedagogical faculties, studying this discipline as a part of physics courses. Due to very different mathematical knowledge of students I have chosen typical and not much difficult examples oriented to several branches of astronomy. Each part of examples begins with a self-contained theoretical introduction. The difficulty rises gradually from trivial to more complicated examples. The examples are mainly focused on motions in radial gravitational fields.
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