Master's Thesis - Studierstube Augmented Reality Project - Graz ...

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Glossary Notation GPU gradient field Hermitian Description Graphics Processing Unit. A dedicated microprocessor for computer graphics. Basically a gradient field is a field which modulates a constant field B so that the magnetic flux density is lowered in one direction and raised in the opposite direction. The effect of a gradient field in NMR is that the Larmor frequency for magnetized matter is changed depending on the slope of the gradient. In Example a gradient is used to select a certain slice of a Volume. Applying a RF-pulse with concurrently switched on gradient in z- direction will only excite that slice for which the resonance condition is fulfilled. A Hermitian signal is symmetric and can be transformed to a Signal with Im = 0 with the inverse flourier transformation. The latter one is only one of the benefits of a Hermitian signal. 29 45 45 I/O is a synonym for Input - Output behavior. 72 Iso-Surface A triangle mesh surface whose supporting 19 points are placed at identically intensity values (Iso-value) in a volumetric dataset. To obtain these points the popular Marching Cubes algorithm can be utilized for example. Iso-value A threshold value, for example to find the border between two different tissues in a volumetric dataset. The popular Marching Cubes algorithm, for example, can be utilized to envelop all positions with the defined Iso-value with a surface triagle mesh. 19 LIC Line Integral Convolution. A Technique to 27 convolute a vector field with a noise texture. LVOT Left Ventricular Outflow Tract 59 magnetization vector A helping construct to characterize the total magnetization of a spin-system placed in a homogeneous magnetic field. 42 148
Glossary Notation Description MIP Maximum Intensity <strong>Project</strong>ion referrs to a 16 certain transfer function in direct volume rendering techniques and concurrently to the whole volume rendering process when used for angiography. This transfer function returns the maximum occurring value sampled from a volumetric dataset along a certain ray and is therefor especially suited for contrast enhanced vessel scans. MR Magnetic Resonance 37 MRI Magnetic Resonance Imaging is based on the 36 principals of NMR. The method was called ’Magnetic Resonance Imaging’ instead of ’Nuclear Magnetic Resonance Imaging’ (NMRI) because of the negative connotations associated with the word nuclear in the late 1970’s. myocardium is the muscular tissue of the heart 36 NMR Nuclear Magnetic Resonance 36 NMRI Nuclear Magnetic Resonance Imaging 36 Nucleus The core of an atom, consisting of neutrons and protons. plu.: Nuclei 36 Open Inventor Open Inventor, originally IRIS Inventor, is a C++ object oriented retained mode 3D graphics API designed by SG to provide a higher layer of programming for OpenGL. Its main goals are better programmer convenience and efficiency.[Hartley1998] 72 PACS Picture Archiving and Communications System. An image archiving- and communication system based on PCs and networks used in many hospitals. 61 149
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Master’s Thesis Quantitative Meas
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I hereby certify that the work pres
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Kurzfassung In dieser Arbeit werden
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CONTENTS 4.2.2 Noise Suppression .
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Chapter 1 Introduction Assessment o
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Figure 1.1: This workflow diagram d
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Chapter 2 Visualization Visualizati
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2.1 Technical Visualization (a) (b)
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2.1 Technical Visualization Next a
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2.1 Technical Visualization Figure
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2.1 Technical Visualization • ave
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2.1 Technical Visualization spaced
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2.1 Technical Visualization improve
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2.1 Technical Visualization try to
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2.1 Technical Visualization Visuali
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2.1 Technical Visualization of N.
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2.2 Advanced Graphics Processing ap
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2.2 Advanced Graphics Processing pr
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2.2 Advanced Graphics Processing te
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Chapter 3 Magnetic Resonance Imagin
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3.1 Magnetic Field and Magnetizatio
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3.1 Magnetic Field and Magnetizatio
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3.2 Excitation of Magnetized Matter
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3.2 Excitation of Magnetized Matter
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3.3 Signal localization 1. A gradie
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3.3 Signal localization in one dire
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3.3 Signal localization a commonly
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3.4 Image Contrast (a) T1-contrast
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3.5 Cine Cardiac Fast Low-Angle Sho
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4.1 Requirements visualization of c
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4.2 Data Preprocessing 4.2 Data Pre
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4.2 Data Preprocessing and if ∆v
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4.3 Intermediate File Format a simp
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4.4 Visualization Framework impleme
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4.4 Visualization Framework hardwar
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4.4 Visualization Framework 3 void
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4.4 Visualization Framework • fra
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4.4 Visualization Framework Figure
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Chapter 5 Implementation This chapt
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5.2 iMEDgine extensions Figure 5.1:
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5.2 iMEDgine extensions which eases
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5.2 iMEDgine extensions solution fu
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5.2 iMEDgine extensions 23 cam_posi
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5.2 iMEDgine extensions Figure 5.4:
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5.2 iMEDgine extensions • SoSFStr
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5.2 iMEDgine extensions 6 Z=" -238.
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Page 151 and 152: 143 Figure B.3: An thinned out UML
Page 153 and 154: Figure B.5: This UML class diagram
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Page 159 and 160: Glossary Notation Description shade
Page 161 and 162: LIST OF FIGURES 3.5 The slice-profi
Page 163 and 164: List of Tables 2.1 CPU - GPU analog
Page 165 and 166: REFERENCES [Brill1994] M. Brill, W.
Page 167 and 168: REFERENCES [iMedgine2006] T. Gross,
Page 169 and 170: REFERENCES [Kniss2002a] Joe Kniss,
Page 171 and 172: REFERENCES [Markl2003] Michael Mark
Page 173 and 174: REFERENCES [Roth1982] Scott D. Roth
Page 175 and 176: REFERENCES [Vivek1999] andAlexPang
Page 177 and 178: INDEX flow data, 135 format definit
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