Results 101 to 110 of about 1,779,847 (297)

Comparison of Six‐ and Three‐Dimensional Error Corrections for the Planning Target Volume in Patients With Nasopharyngeal Cancer

Journal of Medical Radiation Sciences, EarlyView.
6D correction for CBCT achieves better dose coverage of target tumour volume than 3D correction in patients with nasopharyngeal carcinoma. 6D correction significantly improved the dose coverage of PTV‐low at 5 weeks after treatment as compared to 3D correction.
Huan‐Chun Chen, Ming‐Chung Chou
wiley   +1 more source

Fast 4D cone-beam CT from 60 s acquisitions

Physics and Imaging in Radiation Oncology, 2018
Background & purpose: Four dimensional Cone beam CT (CBCT) has many potential benefits for radiotherapy but suffers from poor image quality, long acquisition times, and/or long reconstruction times. In this work we present a fast iterative reconstruction
David C. Hansen, Thomas Sangild Sørensen   +1 more
doaj   +1 more source

Intrafraction motion and impact of margin reduction for MR‐Linac online adaptive radiotherapy for pancreatic cancer treatments

Journal of Medical Radiation Sciences, Volume 72, Issue 1, Page 17-24, March 2025.
This analysis included quantification of intrafraction motion in pancreas stereotactic ablative radiotherapy treated on the MR‐Linac, leading to the development of adjusted (PTV) margins. Intrafraction motion indicated an average target displacement of 1–3 mm, resulting in an adjusted PTV margin of 2 mm in the right–left and superior–inferior ...
Ashleigh Fasala, Madeline Carr, Yolanda Surjan, Parmoun Daghigh, Jeremy de Leon, Abbey Burns, Vikneswary Batumalai   +6 more
wiley   +1 more source

Usability of a deep learning platform for detecting radiographic bone loss and furcation involvement

Journal of Periodontology, EarlyView.
Abstract Background Assessing radiographic bone condition is important for periodontal diagnosis. The accuracy of radiographic interpretation depends highly on a clinician's experience and knowledge. This study aimed to develop a deep learning‐based online platform that aids clinicians in diagnosing periodontitis based on periapical radiographs and to ...
Chun‐Teh Lee, Tanjida Kabir, Alaa Alsaffar, Jiman Nelson, Sally Sheng, Hsiu‐Wan Meng, Mohammad Qali, Muhammad F. Walji, Xiaoqian Jiang, Shayan Shams   +9 more
wiley   +1 more source

FDK Half-Scan with a Heuristic Weighting Scheme on a Flat Panel Detector-Based Cone Beam CT (FDKHSCW)

International Journal of Biomedical Imaging, 2006
A cone beam circular half-scan scheme is becoming an attractive imaging method in cone beam CT since it improves the temporal resolution. Traditionally, the redundant data in the circular half-scan range is weighted by a central scanning plane-dependent ...
Dong Yang, Ruola Ning
doaj   +1 more source

Use of ultrasonography in assessing peri‐implant osseous defects: An in vitro study

Journal of Periodontology, EarlyView.
Abstract Background The purpose of this study is to investigate the feasibility and diagnostic accuracy of ultrasonography in peri‐implant defect identification and evaluation, and to compare ultrasonography (USG) with cone‐beam computed tomography (CBCT) in defect identification and evaluation in an in vitro model.
Melissa Rachel Fok, Alice Yee Ting Kan, Chris Tat Chuen Fok, Ray Tanaka, George Pelekos   +4 more
wiley   +1 more source

Measurement of the MTF of a Cone-Beam Breast Computed Tomography laboratory scanner.

, 2009
In the framework of the realization of dedicated Cone-Beam Breast Computed Tomography (CBBCT) apparatus we report the MTF characterization of our prototype having the best performance in terms of detector pixel size and X ray focal spot than any other ...
RUSSO, PAOLO, METTIVIER, GIOVANNI
core  

Demineralized bone allograft fibers versus particulate in sinus augmentation: A double‐arm randomized controlled and histomorphometric study

Journal of Periodontology, EarlyView.
Abstract Background The primary aim of this study was to evaluate histologic wound healing of demineralized freeze‐dried bone allograft (DFDBA), in particulate (P) or fiber (F) form, in combination with deproteinized bovine bone mineral (DBBM) for maxillary sinus floor augmentation.
Kathryn Gabel, Brian L. Mealey, Michael Mills, Archontia A. Palaiologou   +3 more
wiley   +1 more source

Cone Beam CT Study of Temporal Crest Canal

Journal of Dentistry, 2018
Statement of the Problem: It is crucial for clinicians to be certain about the location of mandibular canal and determine any anatomical variants relevant to it. The temporal crest canal (TCC) is a rare anatomical variant of mandibular canal that lack of
Mahvash Hasani , Shoaleh Shahidi , Shahrzad Alsadat Shamszade   +2 more
doaj  

Suppression Method for Cone-Beam CT Artifact Based on FDK Compensation and Dual-Source Weighting

CT Lilun yu yingyong yanjiu
The Feldkamp-Davis-Kress (FDK) algorithm has the advantages of a simple structure, fast calculation speed, and high reconstruction quality, and it remains the mainstream algorithm for cone-beam computed tomography (CBCT) analytical reconstruction ...
Ronglin XIANG, Li ZHANG
doaj   +1 more source