Influence of model based iterative reconstruction algorithm on image quality of multiplanar reformations in reduced dose chest CT.

Détails

Ressource 1Télécharger: 10.1177_2058460116662299.pdf (401.86 [Ko])
Etat: Serval
Version: Final published version
ID Serval
serval:BIB_7A00B26E440F
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Influence of model based iterative reconstruction algorithm on image quality of multiplanar reformations in reduced dose chest CT.
Périodique
Acta radiologica open
Auteur(s)
Barras H., Dunet V., Hachulla A.L., Grimm J., Beigelman-Aubry C.
ISSN
2058-4601 (Print)
Statut éditorial
Publié
Date de publication
08/2016
Peer-reviewed
Oui
Volume
5
Numéro
8
Pages
2058460116662299
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: epublish
Résumé
Model-based iterative reconstruction (MBIR) reduces image noise and improves image quality (IQ) but its influence on post-processing tools including maximal intensity projection (MIP) and minimal intensity projection (mIP) remains unknown.
To evaluate the influence on IQ of MBIR on native, mIP, MIP axial and coronal reformats of reduced dose computed tomography (RD-CT) chest acquisition.
Raw data of 50 patients, who underwent a standard dose CT (SD-CT) and a follow-up RD-CT with a CT dose index (CTDI) of 2-3 mGy, were reconstructed by MBIR and FBP. Native slices, 4-mm-thick MIP, and 3-mm-thick mIP axial and coronal reformats were generated. The relative IQ, subjective IQ, image noise, and number of artifacts were determined in order to compare different reconstructions of RD-CT with reference SD-CT.
The lowest noise was observed with MBIR. RD-CT reconstructed by MBIR exhibited the best relative and subjective IQ on coronal view regardless of the post-processing tool. MBIR generated the lowest rate of artefacts on coronal mIP/MIP reformats and the highest one on axial reformats, mainly represented by distortions and stairsteps artifacts.
The MBIR algorithm reduces image noise but generates more artifacts than FBP on axial mIP and MIP reformats of RD-CT. Conversely, it significantly improves IQ on coronal views, without increasing artifacts, regardless of the post-processing technique.

Mots-clé
Multidetector computed tomography (MDCT), image reconstruction, thorax
Pubmed
Web of science
Création de la notice
28/09/2016 18:40
Dernière modification de la notice
03/03/2018 18:33
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