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 10686 for “"Tissue"”.
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Ultrasound tissue displacement and tissue elasticity imaging
… of using high frequency ultrasound, to measure tissue motion and tissue elasticity for medical imaging applications. Ultrasound provides a means for non-invasive imaging of soft tissues, providing soft tissue contrast that cannot be achieved using conventional X-ray or tomographic imaging.
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Tissue-material interactions : bioadhesion and tissue response
Diverse interactions between soft tissues and implanted biomaterials directly influence the success or failure of therapeutic interventions. The nature and extent of these interactions strongly depend on both the tissue and material in question and can presumably be characterized for any given …
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Exploring Tissue Microstructure in Healthy and Diseased Lung Tissue
This thesis is divided into two parts. The first part examines diffusion in a number of human lung samples, while the second deals with diffusion in the more simplified environment of a single capillary tube. In the lung study we examine various types of lung samples: healthy and diseased) at a …
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A Discrete Monolayer Cardiac Tissue Model for Tissue Preparation Specific Modeling
… novel methods for modeling a monolayer cardiac tissue and for estimating intracellular conductivities from an optical mapping. First, in the proposed method for modeling a monolayer of cardiac tissue, the factors governing cell shape, cell-to-cell coupling and the degree of cleft space are not …
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Prostate Tissue Motion Tracking and Ultrasound Elastography Using Tissue Mechanics Derived Constraints
Current prostate cancer detection methods can be costly to obtain, such as magnetic resonance imaging, or lack specificity, such as a digital rectal exam. Ultrasound elastography, a method that can be used to develop and test algorithms that output stiffness, strain, and displacement data captured …
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Ion and Amino Transport in Rabbit Kidney Tissue in Tissue Culture Media
… changes that occur when cells are incubated in tissue culture media as opposed to changes that occur when they are incubated in natural media, i.e., serum.
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Production and Characterisation of Tissue-mimicking Collagen Scaffolds for Cardiac Tissue Engineering
The ideal scaffold for tissue engineering provides an architecture similar to natural tissue. For cardiac tissue repair, this three dimensional environment can be modelled on the myocardial extracellular matrix (ECM). To approximate the material composition of the ECM, collagen type I can be used, …
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Ultrasound tissue perfusion imaging
Enhanced blood perfusion in a tissue mass is an indication of neo-vascularity and potential malignancy. Ultrasonic pulsed Doppler imaging is a safe and economical modality for noninvasive monitoring of blood flow. However, weak blood echoes make it difficult to detect perfusion using standard …
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Pulsed laser ablation of tissue : analysis of the removal process and tissue healing
Thesis (Ph. D.)--Massachusetts Institute of Technology, Harvard-MIT Division of Health Sciences and Technology Program in Medical Engineering and Medical Physics, 1988.
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Attempts to cause differentiation of callus tissue of Abies concolor by tissue culture technique
… Recent successes in using the techniques of tissue culture as a means of vegetatively propagating plants prompted the present study of applying these techniques to Abies.A review of the literature indicated that no conifer had ever been grown into plantlets by using the techniques of tissue …
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The Development of Gelatin Based Tissue Adhesives for Use in Soft Tissue Biomedical Applications
… of Gelatin Resorcinol Dialdehyde (GR-DIAL) tissue adhesives by varying formulation. Three adhesive formulations with altered weight content of water and glyoxal (a dialdehyde) were utilized. The adhesive formulations were characterized by pH and gelation time in situ, and …
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Tissue Sodium in CKD Patients
… and skeleton. We measured 23Na content in these tissues of CKD patients, using 23Na magnetic resonance (MR) imaging. Methods: This is a pilot cross-sectional study of CKD stage 4-5D patients and healthy controls. Subjects underwent a 23Na MR study of their right lower leg using a …
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ADIPOSE TISSUE GROWTH AND MAINTENANCE
… Characterized by an increase in adipose tissue to the point where it is associated with adverse health effects, the prevalence of obesity has nearly tripled over the past fifty years. Though for many years adipose tissue was considered to be merely a storage depot for fatty acids, it is …
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Photoactivated Fixation of Cartilage Tissue
… repair, initial integration between the host tissue and repair site is desirable to allow for nutrient transport, molecular deposition to enhance fixation, and eventual stress transmission across the interface. It has been postulated that effective transport and crosslinking of newly …
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Advances in Bone Tissue Engineering
… morbidity might follow. A pre-fabricated or tissue engineered material has been proposed as an alternative means of addressing these limitations. By combining bone forming cells, growth factors and scaffolding materials, this technique has the potential to generate custom made bone grafts. …
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Tissue repair in lung disorders
The remodeling phase of tissue repair in lung disorders such as idiopathic pulmonary disease, asthma, obliterative bronchiolitis, and after lung transplantation is not well understood. One of the key players in fibrosis is the fibroblast and its progenitor, the fibrocyte. The fibroblast is the main …
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Microultrasound Imaging of Tissue Dysplasia
… and measure microscopic changes in precancerous tissue using a mouse small bowel model with an oncogenic mutation was developed. µUS transducer was used to test the hypothesis that the intestinal tissue morphology of WT (wild type) and ApcMin/+ (adenomatous polyposis coli) diverges with …
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Microtechnologies for Cardiovascular Tissue Engineering
… cure the inevitable descent into heart failure. Tissue engineering is uniquely poised to significantly alter this disease burden though the fabrication of cardiac and vascular tissues in vitro. However, the challenges for achieving these aims are significant - for cardiac tissues, the therapy …
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