Zobrazeno 1 - 10
of 2 791
pro vyhledávání: '"metal artifact"'
Autor:
Sepideh Hatamikia, Ander Biguri, Gernot Kronreif, Tom Russ, Joachim Kettenbach, Wolfgang Birkfellner
Publikováno v:
Zeitschrift für Medizinische Physik, Vol 34, Iss 4, Pp 565-579 (2024)
Precise instrument placement plays a critical role in all interventional procedures, especially percutaneous procedures such as needle biopsies, to achieve successful tumor targeting and increased diagnostic accuracy. C-arm cone beam computed tomogra
Externí odkaz:
https://doaj.org/article/5c870a5ae9d5489da3f02ddd1ab8c609
Publikováno v:
BMC Medical Imaging, Vol 24, Iss 1, Pp 1-15 (2024)
Abstract Background Computed tomography (CT) is widely in clinics and is affected by metal implants. Metal segmentation is crucial for metal artifact correction, and the common threshold method often fails to accurately segment metals. Purpose This s
Externí odkaz:
https://doaj.org/article/c260d1253eff49b8a2698739b976e6ea
Publikováno v:
口腔疾病防治, Vol 32, Iss 8, Pp 646-652 (2024)
Vertical root fracture is a type of longitudinal crack originating from the roots of teeth that can occur in vital teeth and teeth after root canal treatment. It is a hard tissue disease of teeth with a complex etiology and poor prognosis. The vertic
Externí odkaz:
https://doaj.org/article/d88ef75c45f9464591dcab8bc3a2f9ec
Autor:
Elif Can, Georg Böning, Willie Magnus Lüdemann, Clarissa Hosse, Johannes Kolck, Sophia Paparoditis, Thao Nguyen, Sophie K. Piper, Dominik Geisel, Gero Wieners, Bernhard Gebauer, Aboelyazid Elkilany, Martin Jonczyk
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-8 (2024)
Abstract Metal artifacts notoriously pose significant challenge in computed tomography (CT), leading to inaccuracies in image formation and interpretation. Artifact reduction tools have been designed to improve cone beam computed tomography (CBCT) im
Externí odkaz:
https://doaj.org/article/55743af05b684e489eb3a4aa1f01bf98
Publikováno v:
Translational Research in Anatomy, Vol 37, Iss , Pp 100350- (2024)
Background: The value of formalin-fixed postmortem computed tomography (PMCT) has significantly increased in human anatomy education and research. However, improving embalmed PMCT images with high noise, low contrast, and multiple artifacts is an imp
Externí odkaz:
https://doaj.org/article/36b65a8e62494d96978e45a99ba9e6a5
Autor:
Qinwen YAN, Yuxiang WANG, Jun ZHANG, Lan HE, Gang HU, Minchao XIONG, Junxiang QIN, Xuegang YUAN
Publikováno v:
CT Lilun yu yingyong yanjiu, Vol 33, Iss 2, Pp 182-188 (2024)
Objective: To evaluate the application value of combining spectral imaging and metal artifact reduction (MAR) in head and neck CTA after the embolization of intracranial aneurysms. Methods: We collected 37 patients who experienced embolization of int
Externí odkaz:
https://doaj.org/article/610ca0be357248d7b7bbe455c1489e30
Publikováno v:
BMC Medical Imaging, Vol 24, Iss 1, Pp 1-14 (2024)
Abstract Background Cone-beam computed tomography (CBCT) has been introduced for breast-specimen imaging to identify a free resection margin of abnormal tissues in breast conservation. As well-known, typical micro CT consumes long acquisition and com
Externí odkaz:
https://doaj.org/article/a0693a49198a4b6ca8567f2d1336c31b
Publikováno v:
Insights into Imaging, Vol 14, Iss 1, Pp 1-12 (2023)
Abstract Objectives To investigate the optimal parameters of spectral CT for preferably visualizing the periprosthetic vasculature and metal artifact reduction (MAR) in total hip arthroplasty (THA). Methods A total of 34 THA of 30 patients were retro
Externí odkaz:
https://doaj.org/article/b52cd039efd14c1f82147c0c30f91581
Publikováno v:
Nuclear Engineering and Technology, Vol 55, Iss 8, Pp 2854-2863 (2023)
Objective: To present a hybrid approach that incorporates a constrained beam-hardening estimator (CBHE) and deep learning (DL)-based post-refinement for metal artifact reduction in dental cone-beam computed tomography (CBCT). Methods: Constrained bea
Externí odkaz:
https://doaj.org/article/a3b87999973a43e2af3cbcfd8781c33f
Autor:
Marta Bogowicz, Didier Lustermans, Vicki Trier Taasti, Colien Hazelaar, Frank Verhaegen, Gabriel Paiva Fonseca, Wouter van Elmpt
Publikováno v:
Physics and Imaging in Radiation Oncology, Vol 29, Iss , Pp 100566- (2024)
Background and purpose: Dose calculation on cone-beam computed tomography (CBCT) images has been less accurate than on computed tomography (CT) images due to lower image quality and discrepancies in CT numbers for CBCT. As increasing interest arises
Externí odkaz:
https://doaj.org/article/5ee9dcb982ba4e108acc49be4a6ae858