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 320 for “"Patient-specific"”.
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Patient-specific seizure onset detection
… This thesis discusses the design of a real-time, patient-specific method that can be used to detect the onset of epileptic seizures in non-invasive EEG, and then initiate time-sensitive clinical procedures like ictal SPECT. We adopt a patient-specific approach because of the clinically observed …
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Patient-specific thoracic endovascular aoratic repair (TEVAR)
… Current off-the-shelf devices may not fit the patient perfectly, potentially increasing the chance of post-operative complications. This project aims to provide proof of concept for rapidly creating inexpensive patient-specific EVAR stent-grafts, conforming to the unique anatomy of the patient. …
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Patient-Specific Musculoskeletal Modeling of Total Shoulder Arthroplasty
… is often considered a surgery of last resort for patients with debilitating pathologies of the glenohumeral joint such as osteoarthritis, humeral head fracture, and advancing rotator cuff tears. TSA replaces the articulation between the humeral head and the glenoid fossa, with the goals of …
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Finite Element Modeling of Patient-Specific Total Shoulder Arthroplasty
… to evaluate the effects of variation of certain patient and implant alignment parameters that may influence long-term outcomes of these surgical procedures, including kinematics, joint loads and contact mechanics. Computational models of six TSA subjects, three aTSA and three rTSA, were created …
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Computational Methodology for Generating Patient-Specific Soft Tissue Representations
<p>This dissertation focused on modeling specimen-specific soft tissue structures in the context of joint replacement surgery. The research addressed four key aspects. The first study involved developing a workflow for creating finite element models of the hip capsule to replicate its …
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A patient-specific FSI model for vascular access in haemodialysis
… To achieve the high flow rates that enable patients with renal disease to receive haemodialysis, a fistula is created between an artery and a vein. The patency rate of fistulas, especially those located in the upper arm, is low. The approach adopted here makes use of new magnetic resonance …
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Immobilization and Catheter Guidance for Breast Brachytherapy Using Patient-Specific Templates
… and catheter guidance system. A custom-template specific to each patient with optimally-placed guide-holes for catheter insertion was designed and fabricated for use on phantom studies. Template creation is based on a virtual reality reconstruction of the patient's anatomy from computed …
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A patient specific total disc replacement to treat degenerative disc disease
… to these long-term side effects and unfavourable patient outcomes by replacing like with like, restoring both the biological and mechanical functions of the IVD. This thesis aimed to develop and validate a tissue-engineered total disc replacement that reproduces the mechanical environment of the …
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An Evaluation of The Consistency of Imrt Patient-Specific Qa Techniques
… quality assurance (QA) procedure, known as patient specific IMRT QA. Many methods of measurement and analysis have evolved for this QA. There is not a standard among clinical institutions, and many devices and action levels are used. Since the acceptance criteria determines if the dosimetric …
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Methods for increasing customization in rapid machining patient-specific bone implants
… of the surface characteristics of rapid machined patient-specific bone implants. A bone implant is a medical device that is used for replacing missing or damaged bone tissue in a patient's body. It is possible for a bone implant to have three different types of surfaces (articular, periosteal, …
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Patient-specific blood flow modelling in diagnosis of coronary artery disease
… thesis presents the approach for development of patient-specific coronary blood flow models in 3D and 0D domains based on coronary artery geometries reconstructed from Coronary Computed Tomography Angiography datasets (CCTA). The computed flow patterns extend the diagnostic value of CCTA, which, …
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Fluid-structure interaction modelling of a patient-specific arteriovenous access fistula
… This thesis focuses on developing a patient-specific fluid-structure interaction (FSI) model of a PC-MRA imaged arteriovenous fistula. The numerical FSI model is developed and simulated within the commercial multiphysics simulation package ANSYS® Academic Research, Release 16. The …
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Patient-Specific Factors Associated with Surgical Delay in a Large Academic Hospital
… operating room. In addition to financial losses, patients suffer physical and emotional distress, including an increased risk of morbidity or mortality when surgical cases are delayed due to inefficiency. While patient-related causes of delay have been implicated, it is unclear which specific …
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CyberCardia: Patient-specific electrophysiological heart model for assisting left atrium arrhythmia ablation
… which are used to tune a heart model, creating a patient-specific whole-atrium model. With this model, we can simulate and detect arrhythmia sources, and provide ablation assistance. To build such a system, we investigated the fiber effects on atrial activation patterns. We developed a fast heart …
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Propagation of High Intensity Focused Ultrasound through a Patient-specific Ribcage Model
… (HIFU) treatment through ribcage using patient data is described. This is further tested experimentally to derive at various parameters which could be indirectly useful in defining amount of energy and alteration needed in treatment protocols for the upper abdominal pathologies covered …
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Moment Constraints in Radiation Therapy Planning Optimization Incorporating Patient-Specific Anatomical Geometry
… bounds due to the base model lacking patient-specific anatomical or dosimetric information. To address that, an enhanced model is proposed that incorporates the so-called dose deposition matrix, thereby requiring reformulating the problem as a mixed-integer program (MIP). By embedding …
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3D Reconstruction of Patient Specific Bone Models for Image Guided Orthopaedic Surgery
Visualisation of patient-specific fractured bone in 3D plays an important role in image guided orthopaedic surgery. Existing research often focuses on intra-operative registration of the patients' anatomy with pre-operatively obtained 3D volumetric data (e.g. CT scans) utilising fiduciary markers. …
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Patient-specific technology for in vivo assessment of 3-D spinal motion
… have proven successful in assessing 3-D patient-specific spinal kinematics by combining a patient-specific 3-D spine model (CT or MRI) with bi-planar fluoroscopic imaging; however, custom, not clinically available advanced imaging equipment as well as an increase in radiation exposure is …
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Visualisation and manipulation of 3D patient-specific bone geometry using augmented reality
… improve the imageguided surgery (IGS) workflow; specifically, pre-surgical planning, intra-operative guidance, post-surgical assessment, and rehabilitation. Augmented reality (AR), a form of computer-mediated reality, uses an electronic display or projection module to add a hologram in the user's …
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