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 110 for “"Diagnostic imaging"”.
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Medical ultrasonics: dynamic focusing in diagnostic imaging
The design and implementation of an ultrasonic dynamic focusing annular array system is described. The array is designed for use as a contact transducer and for eventual incorporation into the head of a real-time mechanical scanner.
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The economics of the medical diagnostic imaging equipment industry
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Economics, 1984.
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Minimally invasive diagnostic imaging using high resolution Optical Coherence Tomography
Advances in medical imaging have given researchers unprecedented capabilities to visualize, characterize and understand biological systems. Optical Coherence Tomography (OCT) is a high speed, high resolution imaging technique that utilizes low coherence interferometry to perform cross-sectional …
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Diagnostic Imaging of Foreign Bodies and Compartmentalization in the Canine Manus
… computed tomography (CT), magnetic resonance imaging (MRI), and transverse anatomic sections. Most structures identified on transverse sections were visible on both CT and MRI images. Detail in the osseous structures was better in CT images, while MRI provided increased contrast of soft-tissue …
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Diagnostic imaging of the tympanic bulla and temporomandibular joint in the dog, cat and rabbit.
… in the dog, cat, and more recently the rabbit. Diagnostic imaging is important in the assessment of disease of these structures but there is a relative lack of comparative anatomical information relating to the normal that may be used to understand the abnormal features encountered when using …
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Rhenium and technetium-labeled progestins, the development of receptor-directed agents for diagnostic imaging or therapy
… to investigate the possibility of developing diagnostic imaging agents for steroid receptor-positive tumors that are labeled with the readily available radionuclide technetium-99m, three conjugate systems have been prepared in which a progestin is linked to a metal chelate system. These are …
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Real-time beam visualization and therapy planning for focused ultrasound therapies using a diagnostic imaging array
… guidance technologies such as magnetic resonance imaging (MRI). Pre-therapy planning and real-time monitoring during treatment are crucial to ensure that healthy tissues are not affected by the FUS beam. To provide a cost-effective method for FUS therapy monitoring, we present a novel technique …
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New approaches to diagnostic imaging: Magnetic particle imaging for human functional neuroimaging and short mid-field MRI magnet design
Part I: Magnetic Particle Imaging for Human Functional Neuroimaging While Magnetic Resonance Imaging (MRI) has revolutionized diagnostic imaging since its clinical introduction in the 1980s — primarily focusing on hydrogen nuclei — it remains fundamentally limited by the weak nature of nuclear spin …
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Low Dose Dosimetry and Radiation Response in Rodent Models
Exposure to ionizing radiation from diagnostic imaging procedures has dramatically increased in the last three decades. Computed tomography is a powerful and invaluable diagnostic imaging tool, but it is essential that the radiation risks be appropriately quantified so that clinicians are in the …
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The Synthesis and Characterization Of A Functionalized Diethylenetriamine Rhenium Complex Followed By Analytical Analysis of Novel Rhenium-Luteinizing Hormone-Releasing Hormone Conjugates
… progress to be made, particularly in the area of diagnostic imaging compounds for earlier and more rapid detection of diseased states. Given the widespread use of technetium-99m (99mTc) in over 85% of radiopharmaceutical compounds, it is an ideal candidate for generating medically relevant …
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Fluorinated Nanoparticles: A Novel Technology Platform for Multimodal Biomedical Imaging Applications
… in microbubble contrast agents for ultrasound imaging, positron sources for PET imaging, and as an imaging probe in 19F MRI. Additionally, fluorinated organic compounds generate a high ionization yield of fluorine in secondary ion mass spectrometry (SIMS), which is gaining recognition as an in …
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Computer-Aided Detection of Pathologically Enlarged Lymph Nodes On Non-Contrast Ct In Cervical Cancer Patients For Low-Resource Settings
… cancer cases. In the absence of high quality diagnostic imaging needed to identify nodal metastasis, many LMIC sites treat standard pelvic fields, failing to include node metastasis outside of the field and/or to boost lymph nodes in the abdomen and pelvis. The first goal of this project was …
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I.~fluorine-18 Labeled Corticosteroids and Progestins for Receptor-Based Imaging of the Brain and of Breast Tumors. II.~Synthesis and NMR Spectrum of (carbon-13(18))-Meso-Hexestrol
… and synthetic corticosteroids as potential diagnostic imaging agents for Alzheimer's dementia. Four of these ligands have been prepared in fluorine-18 labeled form (three in high specific activity, 369-1618 Ci/mmol), by fluoride ion (n-Bu$\sb4$N$\sp $F) displacement of mesylate or triflate …
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Development of Quantitative Ultrasound-Mediated Molecular Imaging of The Tumor Microenvironment
<p>While conventional diagnostic imaging modalities provide anatomical information to clinicians, these techniques are not sensitive to critical physiological processes. In order to properly classify cancer, it is necessary to investigate noninvasive methods which can provide insight into these …
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Design, synthesis, and biochemical evaluation of three types of hexestrol-based probes for estrogen receptor: Fluorine-18 radiopharmaceuticals, bivalent ligands and diazirine photoaffinity reagents
… of biological and clinical investigation in diagnostic and therapeutic drug design for human breast carcinoma. Molecular probes, such as fluorine-18 radiopharmaceuticals, bivalent ligands, and affinity labels, provide information toward a better understanding of ER localization, structure, …
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Imaging of tumours of the urinary tract in children, with particular reference to Wilms' tumour
… the investigation of Wilms' tumour by diagnostic imaging is presented. The imaging modalities currently utilised are the intravenous urogram (IVU), ultrasound (US), computed tomography (CT) and magnetic resonance (MR). Using the material available in the last decade, the principles, …
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Particle assisted protein crystal nucleation as a protein purification platform for pharmaceutical manufacturing
… using an emulsion based technique that involves imaging protein-containing drops at regular intervals for several hours and then using an image recognition algorithm to count the number of crystals that formed in the drops. On a microfluidic chip, a supersaturated solution of lysozyme is mixed …
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