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 310 for “"Intracranial"”.
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Idiopathic Intracranial Hypertension
Idiopathic intracranial hypertension (IIH) is common in obese women and can lead to significant visual impairment. The cause of IIH is unknown and management controversial, due to the lack of prospective trials. This thesis provides a comprehensive review of the aetiology and management of IIH. The …
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A DEVICE FOR ASSESSING INTRACRANIAL PRESSURES
An instrument has been designed to measure intracranial pressures in infants for the specific purpose of providing a clinical device to aid in the early detection of abnormal intracranial pressures. It is also useful in monitoring the intracranial pressure following surgery of the central nervous …
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Non-Invasive Intracranial Pressure Method and Monitor
… of the eye and the coupled brain. Changes in the intracranial pressure via the vibrational response induce changes in the intraocular pressure via the vibrational principle. Further, the model supports the observation that vibration delivered to the eye can be perceived as sound, if of sufficient …
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Non-invasive diagnostic methods of intracranial arteries
… subtraction angiography (DSA) in follow-up of intracranial aneurysms treated with coils in order to select the best MRA method, to evaluate the impact of increased iodine concentration in contrast medium and decreased tube voltage on arterial attenuation and image quality in computed tomography …
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The Measurement and Interpretation of Intracranial Pressure
The intracranial pressure (ICP) is the most commonly monitored brain parameter in neurocritical care. Its rise, which may be benign, acute or chronic, is a common yet serious problem. ICP can rise because of a number of critical medical conditions such as hydrocephalus, traumatic brain injury, …
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Bioresorbable intracranial pressure sensors for clinical applications
Made available in DSpace on 2018-09-04T20:47:21Z (GMT). No. of bitstreams: 3 SHIN-DISSERTATION-2018.pdf: 10706149 bytes, checksum: 076b7d36ec3e32d13b604e1d8770232d (MD5) LICENSE.txt: 4206 bytes, checksum: 05000b2b1391da56c8d3b9fbd561a96c (MD5) PROQUEST_LICENSE.txt: 4552 bytes, checksum: …
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Intracranial Monitoring after Severe Traumatic Brain Injury
Intracranial monitoring after severe traumatic brain injury offers the possibility for early detection and amelioration of physiological insults. In this thesis, I explore cerebral insults due raised intracranial pressure, decreased cerebral perfusion pressure and impaired cerebral pressure …
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Frequency domain model-based intracranial pressure estimation
Elevation of intracranial pressure (ICP), the pressure of the fluid surrounding the brain, can require urgent medical attention. Current methods for determining ICP are invasive, require neurosurgical expertise, and can lead to infection. ICP measurement is therefore limited to the sickest …
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Sensitivity of Hostile Hemodynamics to Intracranial Aneurysm Geometry
An intracranial aneurysm (IA) is an abnormal outpouching of an artery in the brain and is thought to be present in about 1 in 30 adults. Rupture of an IA is a devastating event leading to death or disability in most cases. To supplement clinical treatment decisions, researchers have turned to …
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Mathematical Model for Hemodynamic and Intracranial Windkessel Mechanism
The understanding of intracranial system so that one can explain its related pathological condition such as hydrocephalus and traumatic brain injury (TBI) is still subtle. Especially, the cause of hydrocephalus which is known as the common birth defect is not well defined. Traditionally, …
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Pressure, Compliance, and Autoregulation Studies in Intracranial Dynamics
… and RAMP, reflective of the relationship between intracranial pressure and cerebral blood flow velocity pulse amplitudes. Finally, a dependency between craniospinal compliance and the frequency at which it is calculated was discovered, and deep learning models showed potential for predicting …
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Intracranial hypertension in Kenyan children with cerebral malaria
… dissertation examines the hypothesis that raised intracranial pressure (ICP) is a determinant of poor outcome in Kenyan children with cerebral malaria. The opening cerebrospinal fluid pressure was raised in all 26 children in whom it was measured on admission and 92% of 35 children in whom it was …
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Investigation Into The Molecular Mechanisms Underlying Idiopathic Intracranial Hypertension
Idiopathic intracranial hypertension (IIH) is a neurological disorder characterised by raised cerebrospinal fluid (CSF) pressure in the absence of any intracranial pathology. IIH mainly affects obese women between the ages of 15 and 45. Two possible mechanisms that could explain the increased CSF …
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Genetic dissection of essential hypertension and familial intracranial aneurysm
The studies of hypertension, described herein, combined complementary strategies to examine the relevance of human chromosome 5q31.1-qter to blood pressure as a quantitative trait, and hypertension as a qualitative trait. This distal region of chromosome 5 was focused upon due to its implication by …
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Identifying the Seizure Onset Zone using Intracranial EEG-fMRI
… epilepsy. Recent studies have shown that using intracranial electrodes (iEEG) combined with fMRI offers unique insight into changes in blood oxygen-level dependent (BOLD) responses associated with interictal epileptiform discharges (IEDs). However, the concordance level between SOZ and …
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A spectral approach for noninvasive estimation of intracranial pressure
Intracranial pressure (ICP) is an important clinical indicator of neurological injury and is used in the diagnosis, treatment and monitoring of several neurological pathologies. Current measurement modalities of ICP are highly invasive, largely limiting the measurement to critically ill patients. …
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Employing Intracranial EEG Data to Decipher Sleep Neural Dynamics
… that involve changes in brainwave patterns. Intracranial EEG (iEEG) is an invasive brain recording technique used in hospital settings in epileptic patients to determine the focus of their seizure activity. The intracranial data recorded allows one to directly observe the neural activity of …
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Investigation of Sleep Neural Dynamics in Intracranial EEG Patients
Intracranial electroencephalography (iEEG) provides superior diagnostic and research benefits over non-invasive EEG in terms of spatial resolution and the level of electrophysiological detail. Post-operative Computed Tomography (CT) scans provide the precision in electrode localization required for …
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