نتایج جستجو برای: cbct scan

تعداد نتایج: 84508  

Journal: :Bioinformation 2023

Apical root resorption, which is characterised as a biological or abnormal phenomenon that shortens the length of apex, additional typical iatrogenic impact orthodontic tooth movement may jeopardise effectiveness treatment and lifespan. The main goals current retrospective investigation were to assess dimensions alveolar bone alterations come along with look into frequency extent resorption in ...

Journal: :International journal of radiation oncology, biology, physics 2014
Aurora Fassi Joël Schaerer Mathieu Fernandes Marco Riboldi David Sarrut Guido Baroni

PURPOSE To develop a tumor tracking method based on a surrogate-driven motion model, which provides noninvasive dynamic localization of extracranial targets for the compensation of respiration-induced intrafraction motion in high-precision radiation therapy. METHODS AND MATERIALS The proposed approach is based on a patient-specific breathing motion model, derived a priori from 4-dimensional p...

Journal: :Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons 2010
Stephen A Schendel David Hatcher

p a o m m l a s s a p s l o w h p he analysis and 3-dimensional (3D) imaging of the irway have become more common as technological evelopments in both imaging and computer analysis ave advanced and converged during the past few ears. These advances have been especially beneficial or the ability to understand and diagnose obstructed leep disordered breathing (OSDB) and its relationship o the cra...

Introduction: Different approaches have been developed to find the position of the internal auditory canal (IAC)in middle cranial fossa approach. A feasibility study was performed to investigate the combination of cone beam computed tomography (CBCT), optical coherence tomography (OCT), and laser ablation to assist a surgeon in a middle cranial fossa approach by outlining the internal auditory ...

Journal: :Applied sciences 2023

This in vitro study evaluated the accuracy of guided endodontics for removal intraradicular fiberglass posts from posterior mandibular teeth and influence operator’s experience this procedure. Forty root-filled first molars with an post were mounted onto 20 models. Guides access made following surface scanning cone-beam computed tomography (CBCT) using CoDiagnostix software. The models randomly...

Journal: :Journal of Prosthetic Dentistry 2021

Statement of problem The accuracy the external surface and internal trabecular architecture large cone beam computed tomography (CBCT)–derived dentomaxillofacial anatomic casts has not yet been thoroughly investigated. Purpose purpose this comparative study was to evaluate quantitative CBCT-derived mandibular by applying an innovative land-mark free methodology. Material methods Following inclu...

2015
Annil Dhingra Deepika Parimoo

Background: The study was to evaluate the eff ect of Wave One fi le system s and One Shape fi le system on the dentine thickness in the apical area of the root canal. Materials and Methods: In this study, a total of 40 freshly extracted human mandibular fi rst molars were taken. All the teeth were categorized into two groups namely Group I: Wave One, Group II: One Shape. Mesio buccal canal of m...

Journal: :Proceedings of SPIE--the International Society for Optical Engineering 2012
J. Lee J. Webster Stayman Yoshito Otake Sebastian Schafer Wojciech Zbijewski Akhil Jay Khanna Jerry L. Prince Jeffrey H. Siewerdsen

This paper proposes to utilize a patient-specific prior to augment intraoperative sparse-scan data to accurately reconstruct the aspects of the region that have changed by a surgical procedure in image-guided surgeries. When anatomical changes are introduced by a surgical procedure, only a sparse set of x-ray images are acquired, and the prior volume is registered to these data. Since all the i...

Journal: :Computer Methods and Programs in Biomedicine 2023

Background and objective The cone-beam computed tomography (CBCT) provides three-dimensional volumetric imaging of a target with low radiation dose cost compared conventional tomography, it is widely used in the detection paranasal sinus disease. However, lacks sensitivity to detect soft tissue lesions owing reconstruction constraints. Consequently, only physicians expertise CBCT reading can di...

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