Log in

Relevant bibliographies by topics / Computed tomography imaging / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Computed tomography imaging.

Dissertations / Theses on the topic 'Computed tomography imaging'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 March 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Computed tomography imaging.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Miles, Brian Herndon. "Computed-tomography imaging spectropolarimeter (CTISP)." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/288965.

Full text

Abstract:

A complete Stokes imaging spectropolarimeter has been developed based on the principles of computed-tomography, spectrometry and polarimetry. The Computed-Tomography Imaging SpectroPolarimeter (CTISP) is a polarization extension to the Computed Tomography Imaging Spectrometer (CTIS)¹. Imaging spectrometers estimate the object cube (x,y, λ), whose smallest subdivision is a voxel, while Stokes imaging spectrometers estimate four Stokes object cubes (x,y, Sp(λ); p = 0,1,2,3), one for each Stokes parameter. CTISP uses a two-dimensional disperser to diffract the image in the field stop into a 5-by

APA, Harvard, Vancouver, ISO, and other styles

2

Williams, Michelle Claire. "Computed tomography imaging of the heart." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/25852.

Full text

Abstract:

Computed tomography imaging has revolutionised modern medicine and we can now study the body in greater detail than ever before. Cardiac computed tomography has the potential to provide information not just on coronary anatomy, but also on myocardial function, perfusion and viability. This thesis addresses the optimisation and validation of computed tomography imaging of the heart using a wide volume 320-multidetector scanner. Computed tomography coronary angiography now has diagnostic accuracy comparable to invasive coronary angiography. However, radiation dose remains an important concern. I

APA, Harvard, Vancouver, ISO, and other styles

3

Moore, Jared William. "Adaptive X-ray Computed Tomography." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/145396.

Full text

Abstract:

An adaptive pre-clinical x-ray computed tomography system, named "FaCT" was designed, built, and tested at the University of Arizona's Center for Gamma-Ray Imaging (CGRI). The FaCT system possesses the unique ability to change its magnification and dynamically mask the x-ray beam profile. Using these two abilities, the FaCT system can adapt its configuration to the object being imaged, and the task being performed, while achieving a reduction in the radiation dose applied for imaging.Development of the system included the design of all mechanical components, motion systems, and safety system

APA, Harvard, Vancouver, ISO, and other styles

4

Wang, Silun, and 王思倫. "Clinical applications of cardiac multi-detector computed tomography." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B36944087.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Webb, John Alan Christopher. "Dynamic stereo-pair imaging of computed tomography data." Thesis, Queen's University Belfast, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235826.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Eck, Brendan Lee. "Myocardial Perfusion Imaging with X-Ray Computed Tomography." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1525187076597075.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Balasundaram, Ashok Mol André. "Cone beam computed tomography imaging of periodontal bone." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2008. http://dc.lib.unc.edu/u?/etd,2063.

Full text

Abstract:

Thesis (M.S.)--University of North Carolina at Chapel Hill, 2008.<br>Title from electronic title page (viewed Feb. 17, 2009). "... in partial fulfillment of the requirements for the degree of Master of Science in the Department of Diagnostic Sciences and General Dentistry, School of Dentistry." Discipline: Diagnostic Sciences and General Dentistry; Department/School: Dentistry.

APA, Harvard, Vancouver, ISO, and other styles

8

Ford, Bridget K. "Computed tomography based spectral imaging for fluorescence microscopy." Diss., The University of Arizona, 2002. http://hdl.handle.net/10150/280122.

Full text

Abstract:

Multispectral imaging has been used for decades in remote sensing to enhance the classification, discrimination and characterization of materials. Only recently has this same technology been similarly applied to fixed biological samples in cytogenetics, pathology and medicine. A further extension to in vivo studies is often limited by the low levels of associated fluorescence as well as the increased temporal resolution required to analyze physiological changes. In addition, the cellular response to a specific agonist is often heterogeneous across the cellular field requiring a combination of

APA, Harvard, Vancouver, ISO, and other styles

9

Ireland, Robert Henry. "Anatomically constrained image reconstruction applied to emission computed tomography & magnetic impedance tomography." Thesis, University of Sheffield, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269337.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Rollano, Hijarrubia Maria Empar. "Imaging of small high-density structures in computed tomography." [S.l.] : Rotterdam : [The Author] ; Erasmus University [Host], 2007. http://hdl.handle.net/1765/10601.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

De, Geer Jakob. "On the use of computed tomography in cardiac imaging." Doctoral thesis, Linköpings universitet, Avdelningen för radiologiska vetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-128276.

Full text

Abstract:

Background Cardiac Computed Tomography Angiography (CCTA) is becoming increasingly useful in the work‐up of coronary artery disease (CAD). Several potential methods for increasing the diagnostic yield of cardiac CT are available. Purpose Study I: To investigate whether the use of a 2‐D, non‐linear adaptive noise reduction filter can improve CCTA image quality. Study II: To evaluate the variation in adenosine stress dynamic CT perfusion (CTP) blood flow as compared to stress 99mTc SPECT. Secondly, to compare the perfusion results from manual and automatic myocardial CTP segmentation. Study III

APA, Harvard, Vancouver, ISO, and other styles

12

Masoudi, Ahmad, Ratchaneekorn Thamvichai, and Mark A. Neifeld. "Computed tomography imaging system design for shape threat detection." SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS, 2016. http://hdl.handle.net/10150/624371.

Full text

Abstract:

In the first part of this work, we present two methods for improving the shape-threat detection performance of x-ray computed tomography. Our work uses a fixed-gantry system employing 25 x-ray sources. We first utilize Kullback-Leibler divergence and Mahalanobis distance to determine the optimal single-source single-exposure measurement. The second method employs gradient search on Bhattacharyya bound on error rate (P-e) to determine an optimal multiplexed measurement that simultaneously utilizes all available sources in a single exposure. With limited total resources of 10(6) photons, the mul

APA, Harvard, Vancouver, ISO, and other styles

13

Alarady, Mamdooh R. "Characterization of Image Quality between Multi-Slice Computed Tomography and Cone Beam Computed Tomography for Clinical Used Protocols in Radiation Therapy Treatment Planning." University of Toledo Health Science Campus / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=mco151080400269082.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Amurao, Maxwell Leland Ramirez. "Investigating collagen hydration with micro computed tomography a dissertation /." San Antonio : UTHSC, 2008. http://proquest.umi.com.libproxy.uthscsa.edu/pqdweb?did=1625775011&sid=1&Fmt=2&clientId=70986&RQT=309&VName=PQD.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Weir, Iain Stewart. "Statistical modelling and reconstructions in single photon emission computed tomography." Thesis, University of Bristol, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335395.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Xu, Minghua. "Photoacoustic computed tomography in biological tissues: algorithms and breast imaging." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1275.

Full text

Abstract:

Photoacoustic computed tomography (PAT) has great potential for application in the biomedical field. It best combines the high contrast of electromagnetic absorption and the high resolution of ultrasonic waves in biological tissues. In Chapter II, we present time-domain reconstruction algorithms for PAT. First, a formal reconstruction formula for arbitrary measurement geometry is presented. Then, we derive a universal and exact back-projection formula for three commonly used measurement geometries, including spherical, planar and cylindrical surfaces. We also find this back-projection formula

APA, Harvard, Vancouver, ISO, and other styles

17

Joita, Pacureanu Alexandra. "Imaging the bone cell network with nanoscale synchrotron computed tomography." Phd thesis, INSA de Lyon, 2012. http://tel.archives-ouvertes.fr/tel-00778408.

Full text

Abstract:

The osteocytes are the most abundant and longest living bone cells, embedded in the bone matrix. They are interconnected with each other through dendrites, located in slender canals called canaliculi. The osteocyte lacunae, cavities in which the cells are located, together with the canaliculi form a communication network throughout the bone matrix, permitting transport of nutrients, waste and signals. These cells were firstly considered passive, but lately it has become increasingly clear their role as mechanosensory cells and orchestrators of bone remodeling. Despite recent advances in imagin

APA, Harvard, Vancouver, ISO, and other styles

18

Han, Dong. "Advances in dual-energy computed tomography imaging of radiological properties." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5447.

Full text

Abstract:

Dual-energy computed tomography (DECT) has shown great potential in the reduction of uncertainties of proton ranges and low energy photon cross section estimation used in radiation therapy planning. The work presented herein investigated three contributions for advancing DECT applications. 1) A linear and separable two-parameter DECT, the basis vector model (BVM) was used to estimate proton stopping power. Compared to other nonlinear two-parameter models in the literature, the BVM model shows a comparable accuracy achieved for typical human tissues. This model outperforms other nonlinear model

APA, Harvard, Vancouver, ISO, and other styles

19

Khoei, Shadi. "Quantitative ultrasound computed tomography imaging of PAGAT radiation dosimetry gel." Thesis, Queensland University of Technology, 2013. https://eprints.qut.edu.au/63958/1/Shadi_Khoei_Thesis.pdf.

Full text

Abstract:

This research developed and scientifically validated a new ultrasound transmission computed tomography system with the aim of quantitative assessment of a polymer gel dosimeter including dose response verification of ultrasonic parameters of attenuation, velocity and broadband ultrasound attenuation (BUA). This work was the first to investigate and report ultrasound frequency dependent attenuation in a gel dosimeter, demonstrating a dose dependence.

APA, Harvard, Vancouver, ISO, and other styles

20

Fentner, David A. "A Comparative Image Quality Analysis between Multi-Slice Computed Tomography and Cone Beam Computed Tomography for Radiation Treatment Planning Purposes." University of Toledo Health Science Campus / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=mco1372413982.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Paziresh, Mahsa. "Development of energy selective techniques in x-ray computed tomography." Phd thesis, Canberra, ACT : The Australian National University, 2016. http://hdl.handle.net/1885/155541.

Full text

Abstract:

X-ray micro computed tomography (Micro-CT) has emerged as a powerful tool in petroleum industry for non-destructive 3D imaging of rock samples, that offers micron-scale spatial resolution images of the distribution of porosity, permeability, and fluid phases of the specimens. Micro-CT obtain the radiographic projections of a sample at different angles and use a mathematical procedure to reconstruct a 3D tomogram of the sample's X-ray attenuation coefficients. Through my thesis, the aim was to investigate and improve two main issue which micro-CT suffers from: 1) beam hardening (BH) artefacts a

APA, Harvard, Vancouver, ISO, and other styles

22

Wajngot, David. "Improving Image Quality in Cardiac Computed Tomography using Deep Learning." Thesis, Linköpings universitet, Avdelningen för kardiovaskulär medicin, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-154506.

Full text

Abstract:

Cardiovascular diseases are the largest mortality factor globally, and early diagnosis is essential for a proper medical response. Cardiac computed tomography can be used to acquire images for their diagnosis, but without radiation dose reduction the radiation emitted to the patient becomes a significant risk factor. By reducing the dose, the image quality is often compromised, and determining a diagnosis becomes difficult. This project proposes image quality enhancement with deep learning. A cycle-consistent generative adversarial neural network was fed low- and high-quality images with the p

APA, Harvard, Vancouver, ISO, and other styles

23

Oh, Eun-Hwan. "Determinants of the diffusion of computed tomography and magnetic resonance imaging." 京都大学 (Kyoto University), 2007. http://hdl.handle.net/2433/137049.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Levi, Jacob. "Automated Beam Hardening Correction for Myocardial Perfusion Imaging using Computed Tomography." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case1553868329519413.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Dong, Xu. "Material-Specific Computed Tomography for Molecular X-Imaging in Biomedical Research." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/88869.

Full text

Abstract:

X-ray Computed Tomography (CT) imaging has been playing a central role in clinical practice since it was invented in 1972. However, the traditional x-ray CT technique fails to distinguish different materials with similar density, especially for biological tissues. The lack of a quantitative imaging representation has constrained the application of CT technique from a broadening application such as personal or precision medicine. Therefore, my major thesis statement is to develop novel material-specific CT imaging techniques for molecular imaging in biological bodies. To achieve the goal, compr

APA, Harvard, Vancouver, ISO, and other styles

26

Secchi, F. "CARDIOVASCULAR COMPUTED TOMOGRAPHY AND MAGNETIC RESONANCE IMAGING IN CONGENITAL HEART DISEASE." Doctoral thesis, Università degli Studi di Milano, 2017. http://hdl.handle.net/2434/470146.

Full text

Abstract:

Cardiac magnetic resonance (CMR) is a non-invasive imaging modality highly reliable for studying cardiovascular morphology and function. Cardiac computed tomography (CCT) can give valuable anatomic information on CHD in children but implies radiation exposure, a relevant issue in children and newborns who are more radiosensitive than adult patients and have a longer lifetime to develop stochastic effects from radiation. We contributed to show the possibility to obtain an impressively low ionizing dose reduction in CHD patients also using standard 64-slice CT scanners. Conversely, CMR holds a p

APA, Harvard, Vancouver, ISO, and other styles

27

Forsythe, Rachael Olivia. "Assessment of abdominal aortic aneurysm biology using magnetic resonance imaging and positron emission tomography-computed tomography." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/29619.

Full text

Abstract:

Background Although abdominal aortic aneurysm (AAA) growth is non-linear, serial measurements of aneurysm diameter are the mainstay of aneurysm surveillance and contribute to decisions on timing of intervention. Aneurysm biology plays a key part in disease evolution but is not currently routinely assessed in clinical practice. Magnetic Resonance Imaging (MRI) and Positron Emission Tomography-Computed Tomography (PET-CT) provide insight into disease processes on a cellular or molecular level, and represent exciting new imaging biomarkers of disease activity. Macrophage-mediated inflammation may

APA, Harvard, Vancouver, ISO, and other styles

28

Olivecrona, Henrik. "Assessment of acetabular cup position with computed tomography /." Stockholm, 2004. http://diss.kib.ki.se/2004/91-7349-816-5/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Winkelmann, Christopher Todd. "Micro-imaging characterization of mouse models of metastasis." Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/5820.

Full text

Abstract:

Thesis (Ph. D.)--University of Missouri-Columbia, 2005.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Vita. "December 2005" Includes bibliographical references.

APA, Harvard, Vancouver, ISO, and other styles

30

Thomas, Howard David. "Non-destructive evaluation of wood utility poles using computed axial tomography imaging." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4523.

Full text

Abstract:

Thesis (M.S.) University of Missouri-Columbia, 2006.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on August 28, 2007) Vita. Includes bibliographical references.

APA, Harvard, Vancouver, ISO, and other styles

31

Mills, J. A. "Theory of longitudinal emission computed tomography and the practical application to cardiac imaging." Thesis, University of Warwick, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383293.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Villafuerte, Mercedes Rodriguez. "The use of emission-transmission computed tomography for improved quantification in SPECT." Thesis, University College London (University of London), 1994. http://discovery.ucl.ac.uk/1317737/.

Full text

Abstract:

The attenuation of photons within the body has been recognised as the major limiting factor hindering the ability of single photon emission computed tomography (SPECT) as a quantitative technique. This thesis investigates several aspects of an emission-transmission SPECT system using the Monte Carlo method and experimental techniques. The system was based on a rotating gamma camera fitted with a parallel hole collimator. The simulation of a transmission study was performed using a simple non-uniform mathematical phantom with two different external sources, a collimated line source and a flood

APA, Harvard, Vancouver, ISO, and other styles

33

Johansson, Adam. "Magnetic resonance imaging with ultrashort echo time as a substitute for X-ray computed tomography." Doctoral thesis, Umeå universitet, Radiofysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-93053.

Full text

Abstract:

Radiotherapy dose calculations have evolved from simple factor based methods performed with pen and paper, into computationally intensive simulations based on Monte Carlo theory and energy deposition kernel convolution. Similarly, in the field of positron emission tomography (PET), attenuation correction, which was originally omitted entirely, is now a crucial component of any PET reconstruction algorithm. Today, both of these applications – radiotherapy and PET – derive their needed in-tissue radiation attenuation coefficients from images acquired with X-ray computed tomography (CT). Since X-

APA, Harvard, Vancouver, ISO, and other styles

34

Clayton, Benjamin James. "Advanced applications of cardiac computed tomography for the difficult-to-image patient." Thesis, University of Plymouth, 2015. http://hdl.handle.net/10026.1/4188.

Full text

Abstract:

Throughout the development of computed tomographic (CT) imaging the challenges of capturing the heart, with its perpetual, vigorous motion, and in particular the tiny detail within the coronary arteries, has driven technological progress. Today, CT is a widely used and rapidly growing modality for the investigation of coronary artery disease, as well as other cardiac pathology. However, limitations remain and particular patient groups present a significant challenge to the CT operator. This thesis adds new knowledge to the assessment of these difficult-to-image patients. It considers patients

APA, Harvard, Vancouver, ISO, and other styles

35

Dowdy, Regina Alma Evelyn. "Using Computed Tomography to Predict Difficult Tracheal Intubation." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1586195479987532.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Markwell, Timothy S. "MegaVoltage Cone Beam Computed Tomography with a standard medical linear accelerator." Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/87438/1/Timothy_Markwell_Thesis.pdf.

Full text

Abstract:

Accurate patient positioning is vital for improved clinical outcomes for cancer treatments using radiotherapy. This project has developed Mega Voltage Cone Beam CT using a standard medical linear accelerator to allow 3D imaging of the patient position at treatment time with no additional hardware required. Providing 3D imaging functionality at no further cost allows enhanced patient position verification on older linear accelerators and in developing countries where access to new technology is limited.

APA, Harvard, Vancouver, ISO, and other styles

37

Sanders, William F. IV. "Computed Tomography Reconstruction: Investigating the Effect of Varying Circle Diameter." Wright State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=wright1308095868.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Kock, Marcus Cornelius Johannes Maria. "Diagnostic imaging of peripheral arterial disease with multi-detector row computed tomography angiography." [S.l.] : Rotterdam : [The Author] ; Erasmus University [Host], 2007. http://hdl.handle.net/1765/10509.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

ALI', MARCO. "COMPUTED TOMOGRAPHY AND MAGNETIC RESONANCE IMAGING FOR THE STUDY OF CONGENITAL HEART DISEASES." Doctoral thesis, Università degli Studi di Milano, 2019. http://hdl.handle.net/2434/608210.

Full text

Abstract:

Background: Cardiovascular disease (CVD) is a leading cause of morbidity and mortality worldwide causing in only Europe 3.9 million deaths corresponding the 45% of total deaths. In particular, among CVD, the congenital heart disease (CHD) is one of the most serious heart defect with an incidence of 8 per 1,000 live births. Purpose: In recent years, the role of imaging techniques in the diagnosis and follow-up of these patients has become increasingly important due to their progressive technological advancement. This doctoral thesis shows the results that we achieved in the use of cardiac

APA, Harvard, Vancouver, ISO, and other styles

40

Barreto, Mitya M. "Application of Dual-Energy Computed Tomography to the Evaluation of Coronary Atherosclerotic Plaque." Cleveland State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=csu1266528762.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Dube, Jonathan. "Follow-up computed tomography imaging in patients who have suffered traumatic brain injury in Zimbabwe." Thesis, Cape Peninsula University of Technology, 2019. http://hdl.handle.net/20.500.11838/2971.

Full text

Abstract:

Thesis (MSc (Radiography))--Cape Peninsula University of Technology, 2019<br>Introduction: Traumatic brain injury (TBI) is frequently associated with mortality and morbidity in low-income countries. Computed Tomography Brain (CTB) imaging aid in the management of patients by accurately exploring primary and secondary brain injuries following trauma. However, there is controversy among researchers on the benefits of follow-up CTB imaging (FCTBI) amongst patients presenting with TBI showing a normal baseline scan. As such, in an attempt to address the contention, the primary focus of this resear

APA, Harvard, Vancouver, ISO, and other styles

42

Razavi, Mohammad Reza. "Characterization of microstructure and internal displacement field of sand using X-ray computed tomography." Online access for everyone, 2006. http://www.dissertations.wsu.edu/Dissertations/Fall2006/M_Razavi_121206.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Townsend, Katy Louise. "The Use of Radiographs, Dual-energy X-ray Absorptiometry, Quantitative Computed Tomography and Micro-computed Tomography to Determine Local Cancellous Bone Quality in the Canine Proximal Femur." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1336769521.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Salhani, Maat Bilhal. "Backprojection-then-filtering reconstruction along the most likely path in proton computed tomography." Thesis, KTH, Skolan för teknik och hälsa (STH), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-189495.

Full text

Abstract:

The backprojection-then-filtering algorithm was applied to proton CT data to reconstruct a map of proton stopping power relative to water (RSP) in air, water and bone. Backprojections were performed along three commonly used path estimates for the proton: straight line path, cubic spline path, and most likely path. The proton CT data was obtained through simulations using the GEANT4 simulation toolkit. Two elliptical phantoms were inspected, and an accuracy of 0.2% and 0.8% was obtained for the RSP in water and bone respectively in the region of interest, while the RSP of air was significantly

APA, Harvard, Vancouver, ISO, and other styles

45

Moore, Craig Steven. "Optimisation of computed radiography chest imaging utilising a novel simulation technique derived from real patient computed tomography data sets." Thesis, University of Hull, 2011. http://hydra.hull.ac.uk/resources/hull:5762.

Full text

Abstract:

To optimise any medical digital imaging system for chest radiography, it is vital that the images used for optimisation contain projected anatomy, or in other words, anatomical noise. In this thesis, a method to produce and validate a digitally reconstructed radiograph (DRR) computer algorithm that utilises real patient computed tomography (CT) data sets is presented. The algorithm uses a ray casting DRR calculation method to project X-ray pencil beams through CT data and derive the photon energy absorbed in a virtual computed radiography (CR) phosphor. Radiation scatter and CR system noise ar

APA, Harvard, Vancouver, ISO, and other styles

46

ISHIGAKI, TAKEO, MITSUHIKO HIROSE, KIYOKO NAKAMURA, MITSURU IKEDA, KENGO ITO, and NICOLAS MILLA. "FUNDAMENTAL AND CLINICAL EVALUATION OF CHEST COMPUTED TOMOGRAPHY IMAGING IN DETECTABILITY OF PULMONARY NODULE." Nagoya University School of Medicine, 1994. http://hdl.handle.net/2237/16074.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Houslay, Emma S. "The role of computed tomography and magnetic resonance imaging in patients with cardiovascular disease." Thesis, University of Edinburgh, 2008. http://hdl.handle.net/1842/24716.

Full text

Abstract:

Methods: In 16 patients, coronary artery calcification was assessed twice within 4 weeks by helical computed tomography. As part of a randomised controlled trial, patients received atorvastatin 80 mg daily or matching placebo, and had coronary calcification assessed annually. Fifty patients with previous coronary artery bypass surgery who were listed for diagnostic coronary angiography underwent contrast enhanced computed tomography angiography using a 16-slice computed tomography scanner. Finally, 15 patients with recent symptoms and signs of an acute transient ischaemic attack, amaurosis fug

APA, Harvard, Vancouver, ISO, and other styles

48

Xia, Yan [Verfasser], and Andreas [Akademischer Betreuer] Maier. "Region-of-Interest Imaging with C-arm Computed Tomography / Yan Xia. Gutachter: Andreas Maier." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2016. http://d-nb.info/1095885588/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Fieselmann, Andreas [Verfasser]. "Interventional Perfusion Imaging Using C-arm Computed Tomography: Algorithms and Clinical Evaluation / Andreas Fieselmann." Aachen : Shaker, 2012. http://d-nb.info/106773645X/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Willows, Brooke. "Computed Tomography Perfusion Imaging In Acute Ischemic Stroke: Do The Benefits Outweigh The Costs?" Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/623622.

Full text

Abstract:

A Thesis submitted to The University of Arizona College of Medicine - Phoenix in partial fulfillment of the requirements for the Degree of Doctor of Medicine.<br>Current stroke imaging protocol at Barrow Neurological Institute calls for a noncontrast computed tomography (NCCT), a computed tomography angiography (CTA), and a computed tomography perfusion (CTP) at the time of presentation to the emergency department (ED), and follow up imaging includes magnetic resonance diffusion weighted imaging (MR‐DWI). This information is used to determine the appropriateness and safety of tissue plasminoge

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!