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 6 of 6 for “"MRI Safe"”.
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Novel Tools for Interventional Magnetic Resonance Imaging
Magnetic Resonance Imaging (MRI) provides unique advantages such as superior soft tissue contrast, true multiplanar imaging, variable contrast mechanisms, measurement of temperature changes, perfusion and diffusion, and no ionizing radiation. Despite considerable research efforts in the field of …
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MRI-compatibility enhancements to USM performance for interventional devices in MR environments
The safe performance of magnetic resonance imaging (MRI)-guided robot-assisted interventions requires full control and high precision of assistive devices and tools. Because many currently available tools are not MRI-compatible, the characterization of existing tools and development of new ones are …
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Interrogating the infant mind with fMRI
… to use functional magnetic resonance imaging (fMRI) to study infant perceptual and cognitive function. However, it remains unclear whether the basic structure of adult cortical organization is present in young infants. Chapter 2 describes innovations to improve infant fMRI techniques including …
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MRI Safety Evaluation of Dual Leads and Fractured Leads Active Implantable Medical Devices in MRI
Magnetic resonance imaging (MRI) radiofrequency (RF)-induced heating is of great concern for patients with active implantable medical devices (AIMDs) undergo MR scanning. RF safety evaluation of AIMDs consists of two steps: (1) the development of the AIMD model (i.e., transfer function (TF) …
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Study of the thermal effects induced by magnetic resonance on endocardial leads: numerical models and experimental validation
Magnetic resonance imaging (MRI) is today precluded to patients bearing active implantable medical devices AIMDs). The great advantages related to this diagnostic modality, together with the increasing number of people benefiting from implantable devices, in particular pacemakers(PM)and …
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Implantable electrode structures and their RF effects in MRI machines
… patient undergoing a Magnetic Resonance Imaging (MRI) scan. Under the high-power RF field from an MRI machine, the conductors can behave as antennas and concentrate energy into small regions of body tissue, leading to excessive joule heating. Neurostimulator implants that employ long electrode …