EdenteV2, Main, Exploration, bibRecord, 002426

Influence of cone beam CT scanning parameters on grey value measurements at an implant site

Identifieur interne : 002426 ( Main/Exploration ); précédent : 002425; suivant : 002427

Influence of cone beam CT scanning parameters on grey value measurements at an implant site

Auteurs : A. Parsa [Pays-Bas] ; N. Ibrahim [Pays-Bas] ; B. Hassan [Pays-Bas] ; A. Motroni [Italie] ; P. Van Der Stelt [Pays-Bas] ; D. Wismeijer [Pays-Bas]

Source :

Dentomaxillofacial Radiology [ 0250-832X ] ; 2013.

RBID : PMC:3667541

Descripteurs français

KwdFr :
- Algorithmes, Cadavre, Densité osseuse, Dose de radiation, Humains, Mandibule (imagerie diagnostique), Marques de positionnement, Mâchoire partiellement édentée (imagerie diagnostique), Pose d'implant dentaire endo-osseux, Tomodensitométrie (), Tomodensitométrie à faisceau conique (), Tomodensitométrie à faisceau conique (instrumentation).
MESH :
- imagerie diagnostique : Mandibule, Mâchoire partiellement édentée.
- instrumentation : Algorithmes, Cadavre, Densité osseuse, Dose de radiation, Humains, Marques de positionnement, Pose d'implant dentaire endo-osseux, Tomodensitométrie, Tomodensitométrie à faisceau conique.

English descriptors

KwdEn :
- Algorithms, Bone Density, Cadaver, Cone-Beam Computed Tomography (instrumentation), Cone-Beam Computed Tomography (methods), Dental Implantation, Endosseous, Fiducial Markers, Humans, Jaw, Edentulous, Partially (diagnostic imaging), Mandible (diagnostic imaging), Radiation Dosage, Tomography, X-Ray Computed (methods).
MESH :
- diagnostic imaging : Jaw, Edentulous, Partially, Mandible.
- instrumentation : Cone-Beam Computed Tomography.
- methods : Cone-Beam Computed Tomography, Tomography, X-Ray Computed.
- Algorithms, Bone Density, Cadaver, Dental Implantation, Endosseous, Fiducial Markers, Humans, Radiation Dosage.

Abstract

Objectives:

The aim of this study was to determine the grey value variation at the implant site with different scan settings, including field of view (FOV), spatial resolution, number of projections, exposure time and dose selections in two cone beam CT (CBCT) systems and to compare the results with those obtained from a multislice CT system.

Methods:

A partially edentulous human mandibular cadaver was scanned by three CT modalities: multislice CT (MSCT) (Philips, Best, the Netherlands), and two CBCT systems: (Accuitomo 170^®, Morita, Japan) and (NewTom 5G^®, QR, Verona, Italy). Using different scan settings 36 and 24 scans were obtained from the Accuitomo and the NewTom, respectively. The scans were converted to digital imaging and communications in medicine 3 format. The analysis of the data was performed using 3Diagnosys^® software (v. 3.1, 3diemme, Cantù, Italy) and Geomagic studio^® 2012 (Morrisville, NC). On the MSCT scan, one probe designating the site for pre-operative implant placement was inserted. The inserted probe on MSCT was transformed to the same region on each CBCT scan using a volume-based three-dimensional registration algorithm. The mean voxel grey value of the region around the probe was derived separately for each CBCT. The influence of scanning parameters on the measured mean voxel grey values was assessed.

Results:

Grey values in both CBCT systems significantly deviated from Hounsfield unit values measured with MSCT (p = 0.0001). In both CBCT systems, scan FOV and spatial resolution selections had a statistically significant influence on grey value measurements (p = 0.0001). The number of projections selection had a statistically significant influence in the Accuitomo system (p = 0.0001) while exposure time and dose selections had no statistically significant influence on grey value measurements in the NewTom (p = 0.43 and p = 0.37, respectively).

Conclusions:

Grey-level values from CBCT images are influenced by device and scanning settings.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3667541

DOI: 10.1259/dmfr/79884780
PubMed: 22933535
PubMed Central: 3667541

Affiliations:

Le document en format XML

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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Algorithms</term>
<term>Bone Density</term>
<term>Cadaver</term>
<term>Cone-Beam Computed Tomography (instrumentation)</term>
<term>Cone-Beam Computed Tomography (methods)</term>
<term>Dental Implantation, Endosseous</term>
<term>Fiducial Markers</term>
<term>Humans</term>
<term>Jaw, Edentulous, Partially (diagnostic imaging)</term>
<term>Mandible (diagnostic imaging)</term>
<term>Radiation Dosage</term>
<term>Tomography, X-Ray Computed (methods)</term>
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<term>Cadavre</term>
<term>Densité osseuse</term>
<term>Dose de radiation</term>
<term>Humains</term>
<term>Mandibule (imagerie diagnostique)</term>
<term>Marques de positionnement</term>
<term>Mâchoire partiellement édentée (imagerie diagnostique)</term>
<term>Pose d'implant dentaire endo-osseux</term>
<term>Tomodensitométrie ()</term>
<term>Tomodensitométrie à faisceau conique ()</term>
<term>Tomodensitométrie à faisceau conique (instrumentation)</term>
</keywords>
<keywords scheme="MESH" qualifier="diagnostic imaging" xml:lang="en"><term>Jaw, Edentulous, Partially</term>
<term>Mandible</term>
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<keywords scheme="MESH" qualifier="imagerie diagnostique" xml:lang="fr"><term>Mandibule</term>
<term>Mâchoire partiellement édentée</term>
</keywords>
<keywords scheme="MESH" qualifier="instrumentation" xml:lang="en"><term>Cone-Beam Computed Tomography</term>
</keywords>
<keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Cone-Beam Computed Tomography</term>
<term>Tomography, X-Ray Computed</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Algorithms</term>
<term>Bone Density</term>
<term>Cadaver</term>
<term>Dental Implantation, Endosseous</term>
<term>Fiducial Markers</term>
<term>Humans</term>
<term>Radiation Dosage</term>
</keywords>
<keywords scheme="MESH" qualifier="instrumentation" xml:lang="fr"><term>Algorithmes</term>
<term>Cadavre</term>
<term>Densité osseuse</term>
<term>Dose de radiation</term>
<term>Humains</term>
<term>Marques de positionnement</term>
<term>Pose d'implant dentaire endo-osseux</term>
<term>Tomodensitométrie</term>
<term>Tomodensitométrie à faisceau conique</term>
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<front><div type="abstract" xml:lang="en"><sec><title>Objectives:</title>
<p>The aim of this study was to determine the grey value variation at the implant site with different scan settings, including field of view (FOV), spatial resolution, number of projections, exposure time and dose selections in two cone beam CT (CBCT) systems and to compare the results with those obtained from a multislice CT system.</p>
</sec>
<sec><title>Methods:</title>
<p>A partially edentulous human mandibular cadaver was scanned by three CT modalities: multislice CT (MSCT) (Philips, Best, the Netherlands), and two CBCT systems: (Accuitomo 170<sup>®</sup>
, Morita, Japan) and (NewTom 5G<sup>®</sup>
, QR, Verona, Italy). Using different scan settings 36 and 24 scans were obtained from the Accuitomo and the NewTom, respectively. The scans were converted to digital imaging and communications in medicine 3 format. The analysis of the data was performed using 3Diagnosys<sup>®</sup>
 software (v. 3.1, 3diemme, Cantù, Italy) and Geomagic studio<sup>®</sup>
 2012 (Morrisville, NC). On the MSCT scan, one probe designating the site for pre-operative implant placement was inserted. The inserted probe on MSCT was transformed to the same region on each CBCT scan using a volume-based three-dimensional registration algorithm. The mean voxel grey value of the region around the probe was derived separately for each CBCT. The influence of scanning parameters on the measured mean voxel grey values was assessed.</p>
</sec>
<sec><title>Results:</title>
<p>Grey values in both CBCT systems significantly deviated from Hounsfield unit values measured with MSCT (<italic>p</italic>
 = 0.0001). In both CBCT systems, scan FOV and spatial resolution selections had a statistically significant influence on grey value measurements (<italic>p</italic>
 = 0.0001). The number of projections selection had a statistically significant influence in the Accuitomo system (<italic>p</italic>
 = 0.0001) while exposure time and dose selections had no statistically significant influence on grey value measurements in the NewTom (<italic>p</italic>
 = 0.43 and <italic>p</italic>
 = 0.37, respectively).</p>
</sec>
<sec><title>Conclusions:</title>
<p>Grey-level values from CBCT images are influenced by device and scanning settings.</p>
</sec>
</div>
</front>
</TEI>
<affiliations><list><country><li>Italie</li>
<li>Pays-Bas</li>
</country>
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<li>Lombardie</li>
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<settlement><li>Amsterdam</li>
<li>Milan</li>
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Serveur d'exploration sur le patient édenté

Influence of cone beam CT scanning parameters on grey value measurements at an implant site

Influence of cone beam CT scanning parameters on grey value measurements at an implant site

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki

	Serveur d'exploration sur le patient édenté
	Attention, ce site est en cours de développement ! Attention, site généré par des moyens informatiques à partir de corpus bruts. Les informations ne sont donc pas validées.