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Dissertations / Theses on the topic 'Cone-Beam Computed Tomography'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Allareddy, Veeratrishul. "Incidental findings on cone beam computed tomography." Thesis, University of Iowa, 2009. https://ir.uiowa.edu/etd/457.

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2

Doshi, Susan. "Statistical image analysis in cone-beam computed tomography." Thesis, University of Bath, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619218.

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Cone-beam computed tomography (CBCT) is used to verify the patient’s position prior to commencing radiotherapy treatment. Soft tissues such as the prostate are hard to distinguish, and so gold markers may be implanted. These markers cause artefacts in the 3D reconstruction. In this thesis, we apply statistical image analysis techniques to CBCT data, with two purposes: we estimate the marker locations (with an assessment of uncertainty), and create reconstructions with fewer artefacts. In our first analysis, we define a Bayesian statistical model for the projection data, encouraging local smoot

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3

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.

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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.

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4

Mason, Jonathan Hugh. "Quantitative cone-beam computed tomography reconstruction for radiotherapy planning." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/33193.

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Radiotherapy planning involves the calculation of dose deposition throughout the patient, based upon quantitative electron density images from computed tomography (CT) scans taken before treatment. Cone beam CT (CBCT), consisting of a point source and flat panel detector, is often built onto radiotherapy delivery machines and used during a treatment session to ensure alignment of the patient to the plan. If the plan could be recalculated throughout the course of treatment, then margins of uncertainty and toxicity to healthy tissues could be reduced. CBCT reconstructions are normally too poor t

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5

Amor, Zaineb. "Bone segmentation and extrapolation in Cone-Beam Computed Tomography." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279802.

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This work was done within the French R&D center of GE Medical Systems and focused on two main tasks: skull bone segmentation on 3D Cone-Beam Computed Tomography (CBCT) data and skull volumetric shape extrapolation on 3D CBCT data using deep learning approaches. The motivation behind the first task is that it would allow interventional radiologists to visualize only the vessels directly without adding workflow to their procedures and exposing the patients to extra radiations. The motivation behind the second task is that it would help understand and eventually correct some artifacts related

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6

Adler, Jonas. "GPU Monte Carlo scatter calculations for Cone Beam Computed Tomography." Thesis, KTH, Numerisk analys, NA, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-140221.

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A GPU Monte Carlo code for x-ray photon transport has been implemented and extensively tested. The code is intended for scatter compensation of cone beam computed tomography images. The code was tested to agree with other well known codes within 5% for a set of simple scenarios. The scatter compensation was also tested using an artificial head phantom. The errors in the reconstructed Hounsfield values were reduced by approximately 70%. Several variance reduction methods have been tested, although most were found infeasible on GPUs. The code is nonetheless fast, and can simulate approximately 3

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7

Patel, Shanon. "The clinical applications of cone beam computed tomography in endodontics." Thesis, King's College London (University of London), 2012. https://kclpure.kcl.ac.uk/portal/en/theses/the-clinical-applications-of-cone-beam-computed-tomography-in-endodontics(28daff53-0941-4b36-b8ea-beeb7dc2a8e6).html.

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A series of 5 investigations assessed the application of cone beam computed tomography (CBCT) for the management of endodontic problems. Cone beam computed tomography improved the detection of the presence and absence of simulated periapical lesions in human dry mandibles. The overall sensitivity was 0.248 and 1.0 for periapical radiography and CBCT respectively. The receiver operating characteristics (ROC) area under the curve (AUC) values were 0.791 and 1.000 for intraoral radiography and CBCT, respectively. There was no improvement in the detection of artificially created vertical root frac

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8

Schöndube, Harald [Verfasser]. "Helical Cone-Beam Computed Tomography using the Differentiated Backprojection / Harald Schöndube." Aachen : Shaker, 2010. http://d-nb.info/1106838726/34.

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9

England, Gregory Miles. "Effect of Scanning Conditions on Cone Beam Computed Tomography Gray Value." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1458951153.

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10

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.

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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.

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11

Jones, Elizabeth Marie Matteson. "Comparing Cone Beam Computed Tomography with Multi-Slice Computed Tomography in Diagnosing Osseous Defects at the Mandibular Condyle." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1427278935.

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12

Pengpan, Thanyawee. "A combination of motion-compensated cone-beam computed tomography image reconstruction and electrical impedance tomography." Thesis, University of Bath, 2012. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.558873.

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Cone-beam computed tomography (CBCT) is an imaging technique used in conjunction with radiation therapy. CBCT is used to verify the position of tumours just prior to radiation treatment session. The accuracy of the radiation treatment of thoracic and upper abdominal tumours is heavily affected by respiratory movement. Blurring artefacts, due to the movement during a CBCT scanning, cause misregistration between the CBCT image and the planning image. There has been growing interest in the use of motion-compensated CBCT for correcting the breathing-induced artefacts. A wide range of iterative rec

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13

Zekry, Ahmed Khaled Ahmed Abdin. "Facial alveolar bone wall width: a cone beam computed tomography (CBCT) study in Asians." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B48395663.

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Background: The width of the facial alveolar bone wall is crucial for long term successful esthetic outcomes of implants immediately placed into extraction sockets. A threshold of 2 mm is recommended to minimize buccal vertical bone resorption. Aim: To assess the width of the facial alveolar bone wall using cone-beam computed tomography images (CBCT). Methods: Retrospective CBCT images were acquired from a representative sample of Asians using the i-CAT® classic system with a 0.4 mm voxel size. At random, 200 CBCT images were selected according to predefined criteria. The DICOM file was im

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14

Allen, Jessica. "Evaluation of Maxillary Molar Furcations, Clinical Measurements versus Cone Beam Computed Tomography." VCU Scholars Compass, 2014. http://scholarscompass.vcu.edu/etd/3407.

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BACKGROUND: The use of three-dimensional imaging has shown to provide advantages to the clinician in assessing bone morphology. The aim of this study will be to compare the diagnostic efficacy of cone beam computed tomography (CBCT) versus diagnostic clinical measurements in patients presenting with furcation involved maxillary first molars. METHODS: The study population included 20 patients with 34 maxillary first molar teeth with furcation involvement. Clinical horizontal and vertical probing measurements were compared to CBCT measurements taken by two calibrated examiners. RESULTS: Horizont

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15

Chen, Shufei. "Markerless Lung Tumor Trajectory Estimation from Rotating Cone Beam Computed Tomography Projections." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4439.

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Respiration introduces large tumor motion in the thoracic region which influences treatment outcome for lung cancer patients. Tumor motion management techniques require characterization of temporal tumor motions because tumor motion varies patient to patient, day to day and cycle to cycle. This work develops a markerless algorithm to estimate 3 dimensional (3D) lung-tumor trajectories on free breathing cone beam computed tomography (CBCT) projections, which are 2 dimensional (2D) sequential images rotating about an axis and are used to reconstruct 3D CBCT images. A gold standard tumor trajecto

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16

Hidalgo, Rivas Jose Alejandro. "Aspects of dental cone-beam computed tomography in children and young people." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/aspects-of-dental-conebeam-computed-tomography-in-children-and-young-people(6656111c-8b79-4ad2-b35c-e02d1f47d211).html.

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Cone-beam computed tomography (CBCT) has become increasingly popular in dentistry. It is usually associated with radiation doses that are lower than those seen with conventional computed tomography (CT) but greater than those seen with dental radiography. Because exposure to ionising radiation is associated with risks, the radiation protection principles of justification and optimisation should be applied. These are especially important in children and young people due to their greater risk of developing stochastic effects. Justification requires a balancing of the radiation risk with the pote

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17

Laurent, Caroline A. "An evaluation of facial asymmetry using three-dimensional cone-beam computed tomography." Diss., Search in ProQuest Dissertations & Theses. UC Only, 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1465485.

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18

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.

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19

Karimi, Davood. "Sparsity-based methods for image reconstruction and processing in cone-beam computed tomography." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58483.

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X-ray computed tomography (CT) is an essential tool in modern medicine. As the scale and diversity of the medical applications of CT continue to increase, the quest for reducing the radiation dose becomes of extreme importance. However, producing high-quality images from low-dose scans has proven to be a serious challenge. Therefore, further research in developing more effective image reconstruction and processing algorithms for CT is necessary. This dissertation explores the potential of patch-based image models and total variation (TV) regularization for improving the quality of low-dose

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20

Vroome, Kyle M. "Anterior alveolar bone changes following premolar extractions : a cone beam computed tomography evaluation /." Oklahoma City : [s.n.], 2009.

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21

Anamali, Sindhura. "Prevalence of the posterior superior alveolar canal assessed with cone beam computed tomography." Thesis, University of Iowa, 2012. https://ir.uiowa.edu/etd/1425.

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22

Ariyaratne, Hemal. "Dosimetric investigation of image-guided radiotherapy for prostate cancer using cone-beam computed tomography." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10046186/.

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Objectives: 1. To survey the current practice of image-guided radiotherapy (IGRT) for prostate cancer in the United Kingdom. 2. To validate a practical dose calculation strategy on cone-beam computed tomography (CBCT) 3. To assess the effect of CBCT verification imaging frequency on actual dose delivered to target volume and organs at risk during a course of image-guided radiotherapy for prostate cancer. 4. To compare the dosimetric effects of reduction of CTV-PTV margin with daily imaging. / Material and Methods: 59 radiotherapy centres in the United Kingdom were included in an online survey

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23

Shaik, Shoayeb. "The assessment of osseous changes in the temporomandibular joint using cone beam computed tomography." Thesis, University of the Western Cape, 2013. http://hdl.handle.net/11394/4580.

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>Magister Scientiae - MSc<br>Aim: To compare osseous changes in the mandibular condyles in patients presenting to the Oral Health Center, Tygerburg Campus, with and without clicking of the temporomandibular joint. Background: Clicking of the temporomandibular joint (TMJ) is not a normal occurrence in its form or function. A chronic click may lead to the development of osteoarthritis. A clinical finding of clicking of the joint can reflect osseous changes of the bony structures and form part of the early signs of degenerative joint diseases. These osseous changes can be detected on Cone Beam Co

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24

Riblett, Matthew J. "Motion-Induced Artifact Mitigation and Image Enhancement Strategies for Four-Dimensional Fan-Beam and Cone-Beam Computed Tomography." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5542.

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Four dimensional imaging has become part of the standard of care for diagnosing and treating non-small cell lung cancer. In radiotherapy applications 4D fan-beam computed tomography (4D-CT) and 4D cone-beam computed tomography (4D-CBCT) are two advanced imaging modalities that afford clinical practitioners knowledge of the underlying kinematics and structural dynamics of diseased tissues and provide insight into the effects of regular organ motion and the nature of tissue deformation over time. While these imaging techniques can facilitate the use of more targeted radiotherapies, issues surrou

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25

Alhazmi, Daniah Mansour. "Comparative study of dosimetry in two cone beam CT devices: I-CAT FLX and CS9000." Thesis, University of Iowa, 2018. https://ir.uiowa.edu/etd/3239.

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Introduction: Increasing the imaging demand in the dental field has lead to a dramatic increase in the number of CBCT machines in the U.S. market with a variety of new models and features, as well as different radiation exposures. These differences in exposure among the different CBCT machines and the potential for radiation accumulation over a life time are major concerns for aiming for a reduction in patients’ radiation exposure. Most of the studies have aimed to measure the radiation dose in different CBCT units with different field of views. Up to date, few studies have aimed to measure th

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26

Lalani, Sara. "Three-dimensional CBCT analysis of cranial base symmetry." Thesis, Boston University, 2015. https://hdl.handle.net/2144/37816.

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Thesis (MSD) --Boston University, Henry M. Goldman School of Dental Medicine, 2015 (Department of Orthodontics and Dentofacial Orthopedics).<br>Includes bibliographic references: leaves 37-42.<br>Background: Craniofacial skeletal asymmetry is a common finding in the general population that often goes undetected. Interest in this topic has led to many studies aimed at describing this type of asymmetry, its distribution and etioIogy. The cranial base, being cIosely related to the face and brain, is a key component in craniofacial growth and may also display varying amounts of asymmetry contribut

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27

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.

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28

Bhatt, Meeta. "Prescriptive pattern and clinical decision making in complicated endodontic cases using cone-beam computed tomography." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/63265.

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Purpose: Cone Beam Computed Tomography (CBCT) is an advanced but new imaging technique used in dentistry. Although it already has acquired a substantial literature, that literature does not include evidence-based evidence both for its indications-for-use and for its efficacy in comparison to the conventional approach to diagnosis and treatment planning. Aims: To determine the pattern of prescription of CBCT by all UBC dental programs with particular regard to the field-of-view (FOV). To determine whether the CBCT prescriptions by the Graduate Endodontics Program were compliant with the join

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29

Muders, Jens [Verfasser], and Jürgen [Akademischer Betreuer] Hesser. "Geometrical Calibration and Filter Optimization for Cone-Beam Computed Tomography / Jens Muders ; Betreuer: Jürgen Hesser." Heidelberg : Universitätsbibliothek Heidelberg, 2015. http://d-nb.info/1180395964/34.

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30

Ghowsi, Ali, David Hatcher, Heeyeon Suh, Joorok Park, and Heesoo Oh. "Accuracy and reliability of a fully automated landmark identification system on Cone Beam Computed Tomography." Scholarly Commons, 2021. https://scholarlycommons.pacific.edu/dugoni_etd/17.

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ABSTRACT Introduction: Medical imaging continues to play an increasing role in health care and is an integral part of medicine and dentistry. Recent technological advancements have led to the development of fully automated landmark identification (ALI) systems capable of tracing Cone-Beam Computed Tomography (CBCT). The purpose of this study was to evaluate the accuracy and reliability of an ALI system as a tool for automatic landmark location compared to human judges. Methods: One hundred subjects’ CBCT volumes from multiple imaging centers were traced by two human judges who were calibrated

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Yaba, Cem. "A Customized Head Immobilizing System for Setup and Positioning Accuracy on Cone Beam Computed Tomography." Thesis, Southern Illinois University at Edwardsville, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10808435.

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<p> Recent studies indicate that cone beam computed tomography (CBCT) provides better information on interproximal bone loss of the implant patients. However, in order to detect the bone loss, the patient needs to get CBCT scanned more than once at the same time interval. It is important to find the same position that the patient was in on the first scan, every time. Doing this, we are able to measure bone loss accurately. A sensitivity analysis done with Plenmeca Promax 3D CBCT, to investigate the measurement sensitivity during the image acquisition, showed that getting the same position is n

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32

Orgill, Joshua J. "The impact of luminance on localizing the inferior alveolar canal on cone beam computed tomography." Thesis, University of Iowa, 2019. https://ir.uiowa.edu/etd/6824.

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Introduction: The use of CBCT to visualize the relationship between the inferior alveolar canal and the mandibular third molar roots continues to grow as it is becoming the standard of care. It becomes important to understand the impact that luminance, one of the factors that affects the viewing conditions of digital images, has on appropriately assessing the third molar-canal relationship. To date, no study has assessed the impact of luminance on visualizing anatomic structures on CBCT. The aim of this study is to determine if there is a difference in the ability to appropriately assess the r

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33

Bustamante, Carmen, Vanessa Labrín, Leslie Casas-Apayco, and Hugo Ghersi-Miranda. "Dimension and morphology of the mandibular condyle in Class I patients in cone beam computed tomography." Universidad de Concepcion, 2020. http://hdl.handle.net/10757/652452.

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Evaluar la dimensión antero- posterior (A-P)/medio-lateral (M–L), y la morfología del cóndilo mandibular en pacientes de 18 a 65 años con patrón esquelético Clase I en tomografías computarizadas Cone Beam. Material y Métodos: 71 tomografías fueron evaluadas mediante el software RealScan 2.0. La dimensión fue determinada por los puntos A (más anterior en el plano sagital), P (más posterior en el plano sagital), M (más interno en el plano coronal), L (más externo en plano coronal). Se evaluó la morfología del cóndilo en dos planos coronal y sagital, clasificándose en: redonda, aplanada,

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34

Patel, Alpesh. "Sensitivity and Accuracy of Cone Beam Computed Tomography in Diagnosing Osseous Defects at the Mandibular Condyle." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1363606389.

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35

Alahmad, Haitham N. "Evaluation of Phantoms Used in Image Quality Performance Testing of Dental Cone Beam Computed Tomography Systems." University of Toledo Health Science Campus / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=mco1438985667.

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36

Duggan, Sayward. "Alveolar Ridge Dimension Analysis Following Socket Preservation Using Clinical Assessment and Cone Beam Computed Tomography (CBCT)." VCU Scholars Compass, 2001. http://scholarscompass.vcu.edu/etd/2433.

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AIM: Extraction of a tooth can lead to alveolar ridge resorption which can be minimized by socket preservation. The aim of this study is to analyze vertical and horizontal alveolar ridge dimensions clinically and by CBCT immediately following extraction and 3-4 months following socket preservation. METHODS: The preserved group (P) consisted of 20 patients with1-2 non-molar teeth requiring extraction with socket preservation, while the control group (C) consisted of 5 patients requiring extraction alone. An acrylic stent was fabricated presurgically in order to measure vertical and horizon

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37

Joshi, Jimish Dilip. "Characterization and Improvement of a Cone-Beam CT Scanner for Quantitative Imaging." Wright State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=wright1284997522.

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38

Taylor, Thomas Timothy. "Detection of Regional Variation of Bone Mineralization in a Human Mandible using Computed Tomography." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1331042122.

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39

Giles, David. "Cone-beam computed tomography: imaging dose during CBCT scan acquisition and accuracy of CBCT based dose calculations." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=95242.

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Cone beam computed tomography (CBCT) is a recent development in radiotherapy for use in image guidance. Image guided radiotherapy using CBCT allows visualization of soft tissue targets and critical structures prior to treatment. Dose escalation is made possible by accurately localizing the target volume while reducing normal tissue toxicity. The kilovoltage x-rays of the cone beam imaging system contribute additional dose to the patient. In this study a 2D reference radiochromic film dosimetry method employing GAFCHROMICTM model XR-QA film is used to measure point skin doses and dose profiles

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40

Jamjoom, Faris Zainalabedeen. "Positional Accuracy of Prosthetic Treatment Plan Incorporation Into Cone-beam Computed Tomography Scans Using Surface Scan Superimposition." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1498241824233391.

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41

Becht, Michael P. "A study using 3D cone beam computed tomography to evaluate masseter muscle morphology in observed skeletal malocclusions." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10076.

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Thesis (M.S.)--West Virginia University, 2009.<br>Title from document title page. Document formatted into pages; contains viii, 88 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 62-66).

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Ljungsell, Emma, and Elin Luoma. "Utvärdering av cone beam computed tomography som metod vid fraktur i övre extremiteter : - En jämförelse mellan modaliteter." Thesis, Hälsohögskolan, Högskolan i Jönköping, HHJ, Avd. för naturvetenskap och biomedicin, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-44642.

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Bakgrund: Cone beam computed tomography (CBCT) är en form av datortomografi vanlig inom odontologi och börjar utnyttjas mer inom ortopedisk diagnostik. Frakturer i övre extremiteter är vanligt förekommande i samband med trauma. Konventionell röntgen är oftast förstahandsmetod men kan inte alltid utesluta scaphoideumfraktur, som obehandlad kan ge allvarliga konsekvenser. Syfte: Syftet är att utvärdera CBCT som metod vid fraktur i övre extremiteter genom att jämföra med andra modaliteter. Metod: Arbetet är en systematisk litteraturstudie. Databaserna Medline, CINAHL och PubMed användes. Endast a

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43

Sramek, Benjamin Koerner. "Scatter correction, intermediate view estimation and dose characterization in megavoltage cone-beam CT imaging a dissertation /." San Antonio : UTHSC, 2008. http://proquest.umi.com.libproxy.uthscsa.edu/pqdweb?did=1588783021&sid=1&Fmt=2&clientId=70986&RQT=309&VName=PQD.

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44

Liedke, Gabriela Salatino. "Estudo comparativo de cefalogramas realizados sobre reconstruções de tomografia cone beam total e unilaterais da face e telerradiografias convencionais." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/40217.

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A possibilidade de exploração das imagens oferecida pela tomografia computadorizada cone beam (TCCB) permite investigações mais detalhadas do paciente. Este estudo, empregando alguns destes recursos, se propôs a comparar medidas cefalométricas realizadas sobre telerradiografias convencionais e reconstruções de perfil total e unilaterais obtidas da TCCB. Análises cefalométricas de 30 pacientes foram realizadas por um examinador calibrado sobre as reconstruções da TCCB e as telerradiografias convencionais. A reprodutibilidade dos fatores cefalométricos foi investigada por meio do coeficiente de

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45

Grimard, Brently Allan. "Comparison of clinical, periapical radiograph and cone beam volume tomography measurement techniques for assessing bone level changes following regenerative periodontal therapy a thesis /." San Antonio : UTHSC, 2008. http://learningobjects.library.uthscsa.edu/cdm4/item_viewer.php?CISOROOT=/theses&CISOPTR=34&CISOBOX=1&REC=1.

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46

Bevilacqua, Francesca. "Projection and reconstruction-based noise filtering methods in cone beam CT." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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This thesis has been motivated and developed within a collaboration project between the Department of Mathematics of the University of Bologna and the company Skanray Europe Srl. In detail, this work focuses on Cone Beam CT reconstruction of the human head, with particular interest in detecting small soft tissue elements within white and grey brain matter. This problem is expecially difficult due to the small contrast in the X-ray attenuation coefficient between the two substances to be discriminated. After accurately modelling the data acquisition process (also according to the requireme

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47

Olsen, Justin Todd. "Buccal plate changes following rapid versus slow palatal expansion : a cone beam comuted tomography study /." Oklahoma City : [s.n.], 2009.

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48

Mauro, Rodrigo Antonio Pereira. "Dosimetria em tomografia computadorizada de feixe cônico odontológica." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/59/59135/tde-21112017-193930/.

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Os objetivos deste trabalho foram caracterizar os níveis de referência de radiodiagnóstico para a tomografia computadorizada de feixe cônico odontológica e as características de desempenho dos equipamentos como quilovoltaqgem de pico, rendimento, camada semirredutora, etc., com o intuito de conhecer os níveis dosimétricos em que os pacientes estão expostos, permitindo assim identificar protocolos de aquisição de imagem mais adequados, levando-se em consideração os princípios de radioproteção, e também testar a capacidade de tais equipamentos em alcançar uma imagem de qualidade. A Cone Beam Com

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Visconti, Maria Augusta Portella Guedes 1985. "Validity of water and acrylic as soft tissue simulation materials in an in vitro study using cone beam computed tomography." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/290177.

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Orientador: Francisco Haiter Neto<br>Texto em português e inglês<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba<br>Made available in DSpace on 2018-08-24T17:16:38Z (GMT). No. of bitstreams: 1 Visconti_MariaAugustaPortellaGuedes_D.pdf: 2357684 bytes, checksum: ed042e1f5da51d27eae5691a052e4cc3 (MD5) Previous issue date: 2014<br>Resumo: O presente estudo propôs-se validar os materiais água e acrílico como simuladores de tecidos moles em um estudo in vitro realizado com tomografia computadorizada de feixe cônico (TCFC). Para isso foram utilizadas

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Cros, Torrents Maria. "Dose assessment in Computed Tomography based on Monte Carlo simulation for a 320 detector-row cone-beam scanner." Doctoral thesis, Universitat Rovira i Virgili, 2017. http://hdl.handle.net/10803/454717.

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La tomografia computaritzada (TC) ha esdevingut una de les tècniques d’imatge més utilitzades en el camp de radiodiagnòstic. Des de la introducció dels escàners TC multidetector, el ràpid procés d’evolució tecnològica ha permès l’ús de noves aplicacions diagnostiques. Per aquest motiu, és de gran importància l’avaluació d’exposició de radiació en els escàners i protocols d’adquisició actuals amb l’objectiu d’optimitzar l’aplicació clínica del TC i de minimitzar els possibles efectes de la radiació per la salut. La motivació d’aquesta tesi fou el desenvolupament d’una eina de simulació basada e

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