Results 41 to 50 of about 788,763 (307)
A New Weighting Scheme for Fan-beam and Circle Cone-beam CT Reconstructions [PDF]
arXiv, 2021 In this paper, we first present an arc based algorithm for fan-beam computed tomography (CT) reconstruction via applying Katsevich's helical CT formula to 2D fan-beam CT reconstruction. Then, we propose a new weighting function to deal with the redundant projection data.
arxiv
Awareness of dental students towards CBCT: A cross sectional study
Journal of Indian Academy of Oral Medicine and Radiology, 2020 Background: Cone-beam computed tomography (CBCT) is a new technology, in which two-dimensional detectors and conical beam are used instead of fan shaped beam in conventional computed CT.
Sivesh Sangar, Jayanth Kumar Vadivel
doaj +1 more source
Scientific Data, 2022 Measurement(s) Image Segmentation • Stomach • Duodenum • Small Intestine Technology Type(s) Computed Tomography • Kilovoltage Cone Beam Computed Tomography • Manual Factor Type(s) Treatment planning dose Sample Characteristic - Organism Homo ...
Jun Hong +10 more
doaj +1 more source
eJournal of Oral Maxillofacial Research, 2023 Objectives: The aims of this retrospective study were to objectively assess bone density values obtained by cone-beam computed tomography and to map the periapical and inter-radicular regions of the mandibular bone.
Samir Goyushov +2 more
doaj +1 more source
Prevalence and anatomical variations of maxillary sinus septa : a cone-beam computed tomography analysis [PDF]
, 2022 Detailed understanding the anatomy and variations of maxillary sinus septa is necessary. We aimed to investigate prevalence and various anatomical variations of maxillary sinus septa using cone-beam computed tomography (CBCT) images.
Abesi, Farida +4 more
core +1 more source
Anatomy of the root canal system of the mandible teeth according to cone-beam computed tomography
Эндодонтия Today, 2019 The article presents information on root canal anatomy for the mandibular teeth among the residents of the Moscow region obtained by cone-beam computed tomography.
S. N. Razumova +5 more
doaj +1 more source
Accuracy and Feasibility of Synthetic CT for Lung Adaptive Radiotherapy: A Phantom Study
Technology in Cancer Research & Treatment, 2023 Objectives The respiratory variations will lead to inconsistency between the actual delivery dose and the planning dose. How the minor interfractional amplitude changes affect the geometry and dose delivery accuracy remains to be investigated in the ...
Ruifeng Zhao PhD +2 more
doaj +1 more source
Failure of Cone-Beam Computed Tomography in Detection of Fiber Post Perforation [PDF]
, 2017 Detection of iatrogenic root perforation during post-space preparation especially in labiolingual plane can be challenging due to the two-dimensional nature of conventional radiography; this can be even more challenging if the cemented post is ...
Asgary, Saeed, Fazlyab, Mahta
core +2 more sources
Cone beam computed tomography (CBCT) in pediatric dentistry [PDF]
, 2022 Objective: The aims of this systematic review of the literature were to investigate the uses of cone beam computed tomography (CBCT) in pediatric dentistry and, if possible, identify the indications.
Olszewski, Raphael, Theys, Stéphanie
core +2 more sources
Synthesizing 3D computed tomography from MRI or CBCT using 2.5D deep neural networks [PDF]
arXiv, 2023 Deep learning techniques, particularly convolutional neural networks (CNNs), have gained traction for synthetic computed tomography (sCT) generation from Magnetic resonance imaging (MRI), Cone-beam computed tomography (CBCT) and PET. In this report, we introduce a method to syn-thesize CT from MRI or CBCT. Our method is based on multi-slice (2.5D) CNNs.
arxiv