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 10 of 10 for “"Fracture Detection"”.
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Defect and fracture detection using acoustic emission monitoring
… consolidation of work that investigates the flaw detection capabilities of Acoustic Emission (AE) technology applied to metal alloys and composite materials. The thesis explores the background to AE and how it is applied to flaw detection and fracture characterisation. In preliminary tests, a …
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Segmentation and Fracture Detection in CT Images for Traumatic Pelvic Injuries
… operations, image enhancement, and edge detection are performed for preliminary bone segmentation. The proposed algorithm then uses a template-based best shape matching method that provides an entirely automated segmentation process. This is followed by the proposed Registered Active …
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Segmentation and Fracture Detection in X-ray images for Traumatic Pelvic Injury
… process; specifically, the presence of fracture and quantitative measures of displacement. Feature extraction requires prior identification of separate structures of interest within the pelvis. The proposed system therefore incorporates a hierarchical segmentation algorithm which is able …
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A FPGA/DSP design for real-time fracture detection using low transient pulse
… the hardware and software architecture for the detection of fractures and edges in materials. While the detection method is based on the novel concept of Low Transient Pulse (LTP), the overall system implementation is based on two digital microelectronics technologies widely used for signal …
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Stress prediction, fracture detection, and multiple attribute analysis of seismic attributes in a Barnett Shale gas reservoir, Fort Worth Basin, Texas
… the study area. Emphasis was placed on the detection of changing stress conditions and natural fractures. Azimuthal interval velocity analysis was found to be an effective tool for the detection of changing stress fields. The analysis of azimuthal amplitude data suggests that it can be used …
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Ultra-Wideband Imaging System For Medical Applications. Simulation models and Experimental Investigations for Early Breast Cancer & Bone Fracture Detection Using UWB Microwave Sensors
… medical applications such as early breast cancer detection, analysis of cardiac tissues, soft tissues and bones. Microwave imaging uses non-ionizing ultra wideband (UWB) electromagnetic signals and utilises tissue-dependent dielectric contrast to reconstruct signals and images using radar-based or …
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Evaluating Fairness of Artificial Intelligence Models for Radiology Image Classification
… Society of North America cervical spine fracture detection challenge and abdominal trauma detection challenge. Seven metrics are used for a more comprehensive assessment on fairness. Our findings indicate that cervical spine fracture detection models exhibit overall fairness, while …
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IMPROVING RESOLUTION IN WRIST SPECT WITH CONVERGING COLLIMATORS AND CT ANATOMICAL PRIORS
… nuclear medicine offers a high sensitivity for fracture detection, but low specificity. Improving resolution could lead to better specificity. We hypothesize that wrist SPECT resolution can be improved by using pinhole collimators and by incorporating anatomical prior information. Phantom …
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Ground penetrating radar investigations in Upper Kama potash mines
… as part of an investigation of both pre-existing fractures exposed by mine workings and other anomalous geological structures. During the course of GPR investigation, the electrical properties of salt-bearing units were determined, site-specific data acquisition techniques and object-oriented data …
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Non-contact quantitative imaging of limbs, bone and tissue, using ultrasound tomographic techniques
… imaging system is based on laser generation and detection of ultrasound (LUS) and the second is a water immersion ultrasound tomography (UST) system. The LUS and UST systems and algorithms, in aggregate, can be used to generate large volume, quantitative 2D and traditional 2D ultrasound images. …