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Accurate patient dosimetry in modern computed tomography systems
(NUI Galway, 2020-10-21)
The most common parameter used to estimate and minimise patient dose in computed tomography (CT) is the CT dose index (CTDI). The CTDI is the average absorbed dose from a series of contiguous irradiations along the long ...
Radiobiological modelling of nonsmall-cell lung cancer: A tumour control probability perspective
(NUI Galway, 2021-06-15)
Radiobiology has developed a methodology to evaluate the radiation response of a wide spectrum of cell lines, which can be used to validate a radiation response using mathematical models. The fundamental motivation for ...
Hygroscopicity of marine aerosol: Closure, long term observation and cloud condensation potential
(NUI Galway, 2021-09-18)
Marine aerosols have a profound impact on the global climate system by scattering solar radiation and serving
as seeds for cloud formation. However, the marine aerosols in current models are still poorly represented
and ...
Photoacoustic imaging with clinical, preclinical, and quantitative applications
(NUI Galway, 2020-11-20)
Photoacoustic (PA) imaging (PAI) is an emerging biomedical imaging modality that combines optical absorption contrast with ultrasonic resolution and imaging depth. Major research has been carried out into PAI in recent ...
Depth of field reduction for miniature-camera imaging
(NUI Galway, 2020-08-25)
This thesis investigates the reduction of depth-of- field for miniature camera systems, such as the ones embedded in smartphones. The work on digital shallow depth-of- field is already mature and implemented in most modern ...
Decoding the kinematic and ionisation structure of axisymmetric nebulae
(NUI Galway, 2021-08-04)
The aim of the thesis was to develop a code and pipeline for generating 3D photoionisation models of axisymmetric nebulae to better understand their ob- served structure and composition. This was achieved through a new ...
Optical variability in Late-M and Early-L dwarfs
(NUI Galway, 2021-05-05)
Brown dwarfs and low-mass stars together comprise the group of galactic objects known as ultracool dwarfs. A number have been detected as radio sources – in some cases, emitting periodic radio pulses synchronised to the ...
Aplanatic lens correctors for imaging optics
(NUI Galway, 2022-09-05)
This thesis proposes analytically developed aplanatic field correctors. To begin, an
astigmatism correction method for aplanatic Gregorian telescopes was developed
employing two lenses with spherical surfaces and a ...
A study of black carbon and related measurements from Ireland's atmospheric composition and climate change network
(NUI Galway, 2021-10-04)
A national aethalometer network for monitoring black carbon was developed at three Irish regional stations (Mace Head, Malin Head, and Carnsore Point) as part of Ireland’s Atmospheric Composition and Climate Change (AC3) ...
Radiative transfer of star formation and destruction regions
(NUI Galway, 2022-12-14)
While star formation and destruction may lie at the opposite ends of a star's life cycle, they display remarkable similarities. Both star forming regions and pre-planetary nebulae can be detected by observing molecular ...