Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 1210 for “"MR"”.
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Mr. Walker's pillow book
… In his work as translator and commentator, Mr. Walker is not as rigorously objective nor as truthful as one might expect of a respected scholar. His own history intrudes the pillow book, bringing up questions as to its authenticity and the role it may be playing in revealing the details of …
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Mr. Jefferson's Army in Mr. Madison's War: Atrophy, Policy, and Legacy in the War of 1812
<p>President Thomas Jefferson is a well-known figure, who is not well understood. His military policies are under-examined in the historiography. Yet, he had a tremendous impact on martial development in the Early Republic. Jefferson reshaped the military to suite his pragmatic republican ideals. …
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MR-Bildgebung mit aktiven, intravasalen Kathetern
MR-Bildgebung mit aktiven, intravasalen Kathetern Die Magnetresonanztomographie (MRT) ist eine Bildgebungsmethode, die sich durch ei-nen exzellenten Weichteilkontrast, die freie Wahl der Bildgebungsschicht und das Fehl-en ionisierender Strahlung aus-zeichnet. Diese Vorteile werden in der …
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Development of Advanced Mr-Guided Adaptive Radiation Therapy Methods For Head & Neck Cancers On The 1.5T Mr-Linac
<p> The 1.5T hybrid MRI/linear accelerator (MR-linac) has recently been introduced into clinical practice and used for the treatment of head and neck cancers (HNC). This device enables on-line adaptive radiation therapy (ART) based on anatomical changes throughout treatment and variations in …
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POCS Augmented CycleGAN for MR Image Reconstruction
Traditional Magnetic Resonance Imaging (MRI) reconstruction methods, which may be highly time-consuming and sensitive to noise, heavily depend on solving nonlinear optimization problems. By contrast, deep learning (DL)-based reconstruction methods do not need any explicit analytical data model and …
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Improved quantification in small animal PET/MR
… The combination of magnetic resonance imaging (MRI) and positron emission tomography (PET) provides excellent soft tissue contrast from MRI with exceptional sensitivity and specificity from PET. This thesis explores the use of sequentially acquired PET and MR images to improve the quantification …
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A variational approach to MR bias correction
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2003.
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Rigid registration of MR and biplanar fluoroscopy
… thesis discusses the the rigid registration of MR data and biplanar, fluoroscopic radiographs of the head, by means of an intensity-based, measure of similarity. We investigate a number of similarity measures which have been applied in other multimodal registration contexts, including that of …
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The characterization of a mouse model of transient stroke using ex vivo MR microscopy and in vivo MR imaging
… and therapeutic treatment of stroke. Currently, MR contrast agents have been widely used in clinics for disease diagnosis and treatment evaluation, and in basic research to achieve better anatomical structure visualization and to understand pathological mechanisms of various human diseases in …
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IMAGING SPECIFIC ABSORPTION RATE WITH MR THERMOMETRY USING PARAMAGNETIC LANTHANIDE COMPLEXES AND IN VIVO GABA MR SPECTROSCOPY IN MOVEMENT DISORDERS
Magnetic Resonance Imaging (MRI) is a popular imaging modality due to its ability to provide excellent soft tissue contrast without exposure to ionizing radiation. It can be used for temperature monitoring (thermometry) as well as for assessing the biochemistry in vivo (MRS). This dissertation …
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Absolute Quantitation for MR Molecular Imaging of Angiogenesis
… in the clinic. Magnetic resonance imaging (MRI) and spectroscopy (MRS) are particularly rich in their capability to quantify both physiology and disease via biomarker detection. While this is true for many applications of MRI in cardiovascular and oncological research, <super>19</super>F MR …
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MR-Protonen-Spektroskopie des Linsenkerns bei idiopathischen Handdystonien
… Insbesondere bildgebende Verfahren wie MRT, Sonographie, PET oder SPECT, und Untersuchungen bei sekundären Dystonieformen weisen in diese Richtung. Trotz vielfacher Anstrengungen, den zugrunde liegenden Pathomechanismus aufzudecken, ist es bis heute noch nicht gelungen, ein einheitliches …
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Quantitative MR-Spektroskopie des menschlichen Herzens mittles SLOOP
Die Zielsetzung dieser Arbeit ist, die Möglichkeiten der Magnetresonanz Spektroskopie zur nichtinvasiven Diagnostik des Myokardstoffwechsels bei globalen Herzkrankheiten unter Verwendung neuer Möglichkeiten der Absolutquantifizierung von hochenergetischen Phosphaten zu beschreiben. Im Vordergrund …
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