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 554 for “"biopsy"”.
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Biopsy-implantable chemical sensor
… that can be implanted inside the body during a biopsy procedure and wirelessly report on the tissue environment. The sensor has direct access and can track metabolic markers, such as pH and oxygen, which have been shown to predict outcome, dose, and response to cancer treatment. These markers …
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Target localization in MRI-guided prostate biopsy
… is a worldwide health concern for men. Needle biopsy is the most definitive form of cancer diagnosis. Target-specific biopsies can be performed under magnetic resonance imaging (MRI) guidance. However, needle placements are often inaccurate due to intra-operative prostate motion and the lack of …
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OPTIMIZED APPROACHES FOR LIQUID BIOPSY IN GLIOBLASTOMA PATIENTS
… barrier (BBB) limit the accuracy of tissue biopsy and conventional imaging, hampering truly personalised treatment. To overcome these limitations, novel strategies are needed that can non-invasively capture tumour-specific information Objective This thesis explores three complementary, …
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Needle Localization for Breast Biopsy: The Patient's Experience
<p>The needle localization procedure for breast biopsy (NLP) can be painful and distressing for some women. This study was carried out to learn what factors might increase or decrease NLP pain and distress, and to gain insight into possible interventions to make the procedure more comfortable for …
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Endomyocardial biopsy diagnosis of acute cardiac allograft rejection
… the mononuclear populations in endomyocardial biopsy samples and correlate the findings with the light microscopic appearances of the same biopsy specimens.
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A Comparison of Liver Biopsy Techniques in Dogs
Background: The liver biopsy technique in dogs that consistently provides samples adequate for accurate histopathologic interpretation and the variability of histopathology among lobes is unknown. Hypothesis: Liver biopsy specimens obtained via punch, cup biopsy, and 14 gauge needle biopsy would …
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Perceived efficacy and utilization of the OralCDx brush biopsy
The OralCDx is a preliminary screening tool developed to identify suspicious lesions. Despite large numbers of persons diagnosed with oral cancers annually, minimal research has been conducted on the efficacy and utilization rates of OralCDx. The purpose of this study is to determine perceived …
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Longitudinal Visualization of Neurodegeneration: Digital Biopsy of the Retina
… are not detectable in-vivo without an invasive biopsy. The major aims of this dissertation are to explore optical methods for a digital biopsy and demonstrate their utility in animal models of disease. In this dissertation, traditional ophthalmology methods were augmented with emerging optical …
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Design of an endoscopic biopsy needle with flexural members
… tissue sample from a patient, current endoscopic biopsy needles generally do not preserve tissue histology and often require multiple attempts to obtain a tissue sample. This paper presents an endoscopic biopsy needle with internal flexures that enable tissue to enter the hollow needle and then be …
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Optical biopsy of in vivo tissue using optical coherence tomography
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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Automation of Single Cell Micromanipulation and Microsurgery for Blastocyst Embryo Biopsy
… using a microsurgical operation called embryo biopsy, in which the embryo is reoriented safely to a predefined desired orientation, required for the embryo outer membrane (Zona Pellucida ZP) perforation, to extract the material sample, and separate it from the embryo. Currently, embryologists …
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Non-Invasive cancer detection: computational applications in liquid biopsy and radiomics
… of computational approaches for analyzing liquid biopsy and radiomic data. The research presented herein addresses the limitations of current methods in comprehensively analyzing circulating tumor DNA (ctDNA), particularly at low ctDNA fractions, and introduces novel tools and strategies to …
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The liver in disease: with special reference to aspiration liver biopsy
This thesis commences with a detailed description of the technique and difficulties arising in its application. Then follows a comparison of the results of certain commonly employed biochemical methods used in the study of liver diseases with the histological appearance of the liver. The liver in …
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Single Crystal Based Ultrasound Actuated Needle For Regional Anaesthesia and Biopsy
… of needle-based regional anaesthesia and tissue biopsy is widely used in clinical practice. Ultrasound imaging has improved the efficacy and reduced some side effects during regional nerve block. However, the presentation and interpretation of real-time ultrasound guided needle interventions …
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Risk Factors for Acute Prostatitis after Transrectal Biopsy of the Prostate
… acute prostatitis after transrectal prostate biopsy. MATERIALS AND METHODS: We retrospectively reviewed the medical records of 923 transrectal ultrasound-guided needle biopsy of the prostate on 878 patients performed in our institution from June 2004 to May 2009. The indications for …
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Enhanced biopsy and regional anaesthesia through ultrasound actuation of a standard needle
… including regional anaesthesia and cancer biopsy. In ultrasound guided percutaneous needle procedures, there is a universal problem of imaging the needle, particularly the tip, especially in dense tissues and steep insertion angles. Poor visualization of the needle tip can have serious …
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Ultrasound-based functionalized biopsy markers for lesion tracking through neoadjuvant systemic therapy
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Development of stainless cardiac histology of clinical biopsy samples with infrared spectroscopy
… cardiomyopathy and transplant rejection is biopsy followed by histology. This approach lacks in many aspects. Major challenges faced by pathologists are: addressing inter-observer variability and experimental variations in stain development, and developing approaches for in-situ …
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