A fém mutermék a fejnyaki cone-beam CT (CBCT) képeken.

Translated title of the contribution: Metal artefact on head and neck cone-beam CT images

Miklós Kovacs, P. Fejérdy, Nagy Csaba Dobó

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

There are only a few factors, where the properties of the CBCT is inferior compared to conventional CT. One of these properties is the low contrast resolution, which has an importance in the discrimination of different soft tissues. Another difference is the image quality degrading effect by metal objects. This latter factor has much higher importance in head and neck region CBCT application. The metal artifact is closely related to other types of artifacts, like beam-hardening and x-ray photon scattering artifacts. In some of the cases, metal artifacts can be avoided by the proper adjustment of the scanning parameters, but sometimes the problem overgrows the possibilities. The current pre- and post-processing algorithms used for the correction of different artifacts can improve the image quality, but these algorithms are not the ultimate solution to the problem. The introduction of iterative reconstruction algorithms into the CBCT market will effectively reduce the most CT artifacts, however, the spread of this algorithms are set back because of the insufficient computational power of today's PCs. Another advantage of the use of iterative algorithms is that the patient dose could be significantly reduced.

Original languageHungarian
Pages (from-to)171-178
Number of pages8
JournalFogorvosi szemle
Volume101
Issue number5
Publication statusPublished - Oct 2008

Fingerprint

Cone-Beam Computed Tomography
Artifacts
Neck
Metals
Head
Photons
X-Rays

ASJC Scopus subject areas

  • Medicine(all)

Cite this

A fém mutermék a fejnyaki cone-beam CT (CBCT) képeken. / Kovacs, Miklós; Fejérdy, P.; Dobó, Nagy Csaba.

In: Fogorvosi szemle, Vol. 101, No. 5, 10.2008, p. 171-178.

Research output: Contribution to journalArticle

Kovacs, M, Fejérdy, P & Dobó, NC 2008, 'A fém mutermék a fejnyaki cone-beam CT (CBCT) képeken.', Fogorvosi szemle, vol. 101, no. 5, pp. 171-178.
Kovacs, Miklós ; Fejérdy, P. ; Dobó, Nagy Csaba. / A fém mutermék a fejnyaki cone-beam CT (CBCT) képeken. In: Fogorvosi szemle. 2008 ; Vol. 101, No. 5. pp. 171-178.
@article{fc46c2d3ba82475eb38887e403f72e12,
title = "A f{\'e}m muterm{\'e}k a fejnyaki cone-beam CT (CBCT) k{\'e}peken.",
abstract = "There are only a few factors, where the properties of the CBCT is inferior compared to conventional CT. One of these properties is the low contrast resolution, which has an importance in the discrimination of different soft tissues. Another difference is the image quality degrading effect by metal objects. This latter factor has much higher importance in head and neck region CBCT application. The metal artifact is closely related to other types of artifacts, like beam-hardening and x-ray photon scattering artifacts. In some of the cases, metal artifacts can be avoided by the proper adjustment of the scanning parameters, but sometimes the problem overgrows the possibilities. The current pre- and post-processing algorithms used for the correction of different artifacts can improve the image quality, but these algorithms are not the ultimate solution to the problem. The introduction of iterative reconstruction algorithms into the CBCT market will effectively reduce the most CT artifacts, however, the spread of this algorithms are set back because of the insufficient computational power of today's PCs. Another advantage of the use of iterative algorithms is that the patient dose could be significantly reduced.",
author = "Mikl{\'o}s Kovacs and P. Fej{\'e}rdy and Dob{\'o}, {Nagy Csaba}",
year = "2008",
month = "10",
language = "Hungarian",
volume = "101",
pages = "171--178",
journal = "Fogorvosi szemle",
issn = "0015-5314",
publisher = "Ifjusagi Lapkiado Vallalat",
number = "5",

}

TY - JOUR

T1 - A fém mutermék a fejnyaki cone-beam CT (CBCT) képeken.

AU - Kovacs, Miklós

AU - Fejérdy, P.

AU - Dobó, Nagy Csaba

PY - 2008/10

Y1 - 2008/10

N2 - There are only a few factors, where the properties of the CBCT is inferior compared to conventional CT. One of these properties is the low contrast resolution, which has an importance in the discrimination of different soft tissues. Another difference is the image quality degrading effect by metal objects. This latter factor has much higher importance in head and neck region CBCT application. The metal artifact is closely related to other types of artifacts, like beam-hardening and x-ray photon scattering artifacts. In some of the cases, metal artifacts can be avoided by the proper adjustment of the scanning parameters, but sometimes the problem overgrows the possibilities. The current pre- and post-processing algorithms used for the correction of different artifacts can improve the image quality, but these algorithms are not the ultimate solution to the problem. The introduction of iterative reconstruction algorithms into the CBCT market will effectively reduce the most CT artifacts, however, the spread of this algorithms are set back because of the insufficient computational power of today's PCs. Another advantage of the use of iterative algorithms is that the patient dose could be significantly reduced.

AB - There are only a few factors, where the properties of the CBCT is inferior compared to conventional CT. One of these properties is the low contrast resolution, which has an importance in the discrimination of different soft tissues. Another difference is the image quality degrading effect by metal objects. This latter factor has much higher importance in head and neck region CBCT application. The metal artifact is closely related to other types of artifacts, like beam-hardening and x-ray photon scattering artifacts. In some of the cases, metal artifacts can be avoided by the proper adjustment of the scanning parameters, but sometimes the problem overgrows the possibilities. The current pre- and post-processing algorithms used for the correction of different artifacts can improve the image quality, but these algorithms are not the ultimate solution to the problem. The introduction of iterative reconstruction algorithms into the CBCT market will effectively reduce the most CT artifacts, however, the spread of this algorithms are set back because of the insufficient computational power of today's PCs. Another advantage of the use of iterative algorithms is that the patient dose could be significantly reduced.

UR - http://www.scopus.com/inward/record.url?scp=58149279771&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=58149279771&partnerID=8YFLogxK

M3 - Article

C2 - 19039918

AN - SCOPUS:58149279771

VL - 101

SP - 171

EP - 178

JO - Fogorvosi szemle

JF - Fogorvosi szemle

SN - 0015-5314

IS - 5

ER -