Results 71 to 80 of about 1,682,963 (197)

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

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

GPU-Based 3D Cone-Beam CT Image Reconstruction for Large Data Volume

International Journal of Biomedical Imaging, 2009
Currently, 3D cone-beam CT image reconstruction speed is still a severe limitation for clinical application. The computational power of modern graphics processing units (GPUs) has been harnessed to provide impressive acceleration of 3D volume image ...
Xing Zhao, Jing-jing Hu, Peng Zhang
doaj   +1 more source

Dual-domain network with transfer learning for bowtie-filter induced artifacts in half-fan cone-beam CT

, 2022
In a cone-beam CT system, the use of bowtie-filter may induce artifacts in the reconstructed images. Through a Monte-Carlo simulation study, we confirm that the bowtie filter causes spatially biased beam energy difference thereby creating beam-hardening ...
Jeong, Uijin, Yun, Sungho, Kim, Donghyeon, Kim, Hyeongseok, Cho, Seungryong   +4 more
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Cone-beam CT assessment of implant-related anatomy landmarks of the anterior mandible in a Chinese population

, 2019
Cone-beam CT assessment of implant-related anatomy landmarks of the anterior mandible in a Chinese ...
Liangkun Xie (16318431), Ting Li (117885), Jianzhong Chen (576382), Weihong Wang (115331), Dahai Yin (16318434), Zhigang Xie (203103)   +5 more
core   +1 more source

Analysis of Cone-Beam CT using prior information [PDF]

, 2011
Treatment plans for conformal radiotherapy are based on an initial CT scan. The aim is to deliver the prescribed dose to the tumour, while minimising exposure to nearby organs.
Mengersen, Kerrie, Hargrave, Catriona Elizabeth, Harden, Fiona, Moores, Matthew T.   +3 more
core  

Hybrid operating room with ceiling mounted imaging system assisted pre-operative and intra-operative lung nodule localization for thoracoscopic resections: a 5-year case series

Journal of Cardiothoracic Surgery
Background Video-assisted thoracoscopic (VATS) lung resections are increasingly popular and localization techniques are necessary to aid resection. We describe our experience with hybrid operating room (OR) cone-beam computed tomography (CT) assisted pre-
Audrey Qi Xin Chia, Apoorva Gogna, Angela Maria Takano Pena, Vishnu Vemula Sri Sai, Sivanathan Chandramohan, Shaun Ju Min Xavier Chan, Boon-Hean Ong   +6 more
doaj   +1 more source

Triple-source saddle-curve cone-beam photon counting CT image reconstruction: A simulation study

Zeitschrift für Medizinische Physik
Purpose: The most common detector material in the PC CT system, cannot achieve the best performance at a relatively higher photon flux rate. In the reconstruction view, the most commonly used filtered back projection, is not able to provide sufficient ...
Lin Xin, Weihai Zhuo, Qian Liu, Tianwu Xie, Habib Zaidi   +4 more
doaj   +1 more source

Comparação entre a radiografia panorâmica e a tomografia computadorizada de feixe cônico para avaliação de septos em seios maxilares [PDF]

, 2015
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Programa de Pós-Graduação em Odontologia, Florianópolis, 2015.Os septos são estruturas de osso cortical, localizados no interior dos seios maxilares, que ...
Haas, Letícia Fernanda
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