Results 21 to 30 of about 36,424 (314)

3D Analytic Cone-Beam Reconstruction for Multiaxial CT Acquisitions

International Journal of Biomedical Imaging, 2009
A conventional 3rd generation Computed Tomography (CT) system with a single circular source trajectory is limited in terms of longitudinal scan coverage since extending the scan coverage beyond 40 mm results in significant cone-beam artifacts.
Zhye Yin, Bruno De Man, Jed Pack
doaj   +1 more source

Geometry Calibration of a Modular Stereo Cone-Beam X-ray CT System

Journal of Imaging, 2021
Compared to single source systems, stereo X-ray CT systems allow acquiring projection data within a reduced amount of time, for an extended field-of-view, or for dual X-ray energies. To exploit the benefit of a dual X-ray system, its acquisition geometry
Van Nguyen, Joaquim G. Sanctorum, Sam Van Wassenbergh, Joris J. J. Dirckx, Jan Sijbers, Jan De Beenhouwer   +5 more
doaj   +1 more source

A Hybrid Approach to Reduce Cone-Beam Artifacts for a Circular Orbit Cone-Beam CT System

IEEE Access, 2018
In a cone-beam computed tomography (CT) system, the Feldkamp, Davis, and Kress (FDK) algorithm produces cone-beam artifacts due to insufficient object sampling in the missing cone region of frequency space.
Shinkook Choi, Jinsung Kim, Jongduk Baek
doaj   +1 more source

Bone Densitometric Analysis using Cone Beam Computed Tomography (Cone Beam CT) and Computed Tomography (CT): Establishing the Correlation between Predicted and Actual Values

Advanced Biomedical Research
Background: One of the major drawbacks of cone beam computed tomography (cone beam CT) is that unlike CT, the gray density values obtained from cone beam CT are relative, and not absolute as obtained in the case of CT.
Rashmit Kumar, Kurian Punnoose, Meenakumari Chikkanna, Srikanth Gunturu, Mosa Mohammad Alrifai, Abdulghani Saeed Al Zahrani, J. Suresh Babu, C. Swarnalatha, Abhishek Singh Nayyar   +8 more
doaj   +1 more source

Concrescence: Cone-Beam Computed Tomography Imaging Perspective

Case Reports in Dentistry, 2016
Concrescence is a form of twinning, formed by the confluence of cementum of two teeth at the root level. The diagnosis of concrescence has largely relied on the conventional 2D imaging.
Ali Zakir Syed, LeelaSubhashini Choudary Alluri, Dhiraj Mallela, Troy Frazee   +3 more
doaj   +1 more source

Improved adaptive radiotherapy to adjust for anatomical alterations during curative treatment for locally advanced lung cancer

Physics and Imaging in Radiation Oncology, 2021
Anatomical changes during chemoradiation for lung cancer may decrease dose to the target or increase dose to organs at risk. To assess our ability to identify clinically significant anatomical alterations, we followed 67 lung cancer patients by daily ...
Maria Moksnes Bjaanæs, Erlend Peter Skaug Sande, Øyvind Loe, Christina Ramberg, Tove Mette Næss, Andreas Ottestad, Lotte V. Rogg, Jørund Graadal Svestad, Vilde Drageset Haakensen   +8 more
doaj   +1 more source

Weight-bearing cone-beam CT

Skeletal radiology, 2022
Weight bearing CT (WBCT) of the lower extremity is gaining momentum in evaluation of the foot/ankle and knee. A growing number of international studies use WBCT, which is promising for improving our understanding of anatomy and biomechanics during natural loading of the lower extremity. However, we believe there is risk of excessive enthusiasm for WBCT
Brinch, Signe, Wellenberg, Ruud H. H., Boesen, Mikael Ploug, Maas, Mario, Johannsen, Finn Elkjær, Nybing, Janus Uhd, Turmezei, Tom, Streekstra, Geert J., Hansen, Philip   +8 more
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Cardiac cone‐beam CT [PDF]

Medical Physics, 2005
This doctoral thesis addresses imaging of the heart with retrospectively gated helical cone‐beam computed tomography (CT). A thorough review of the CT reconstruction literature is presented in combination with a historic overview of cardiac CT imaging and a brief introduction to other cardiac imaging modalities.
openaire   +1 more source

The success of cone beam CT [PDF]

Dentomaxillofacial Radiology, 2014
Today, 16 years after its introduction in Dentomaxillofacial Radiology (DMFR), cone beam CT (CBCT) clearly dominates the scientific literature on dentomaxillofacial (DMF) imaging. For some journals, a reader could get the idea that no other option for radiographic imaging exists.
openaire   +2 more sources

Juxta-Cortical Chondroma of the Phalanges: Is there a Role for Cone-Beam Computed Tomography in Diagnosis and Local Staging?

Journal of the Belgian Society of Radiology, 2019
Main teaching point: Low-dose cone-beam computed tomography (CT) may be of additional value to radiographs and magnetic resonance imaging (MRI) in preoperative characterization and local staging of juxta-cortical chondroma Juxta-cortical chondroma is a ...
Magdalena Posadzy, Filip Vanhoenacker, Vasiliki Siozopoulou   +2 more
doaj   +1 more source