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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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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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New model of precession, valid in time interval 400 thousand years
Vondrák, Jan
New model of precession, expressed in terms of long-periodic trigonometric functions of time is developed, based on numerical integration of motions of the Solar system bodies. Its validity is +/- 200 thousand years from the basic epoch J2000, with the accuracy below one milliarcsecond in the central part and gradually decreasing to a few arcminutes towards both ends of the interval of validity.
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