Computed tomography of the cervical spine: comparison of image quality between a standard-dose and a low-dose protocol using filtered back-projection and iterative reconstruction.

Détails

Ressource 1Télécharger: serval:BIB_C9719739668D.P001 (534.81 [Ko])
Etat: Public
Version: de l'auteur
Licence: Non spécifiée
It was possible to publish this article open access thanks to a Swiss National Licence with the publisher.
ID Serval
serval:BIB_C9719739668D
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Computed tomography of the cervical spine: comparison of image quality between a standard-dose and a low-dose protocol using filtered back-projection and iterative reconstruction.
Périodique
Skeletal Radiology
Auteur(s)
Becce F., Ben Salah Y., Verdun F.R., Vande Berg B.C., Lecouvet F.E., Meuli R., Omoumi P.
ISSN
1432-2161 (Electronic)
ISSN-L
0364-2348
Statut éditorial
Publié
Date de publication
2013
Volume
42
Numéro
7
Pages
937-945
Langue
anglais
Notes
Publication types: Journal ArticlePublication Status: ppublish. PDF type: SCIENTIFIC ARTICLE
Résumé
OBJECTIVE: To compare image quality of a standard-dose (SD) and a low-dose (LD) cervical spine CT protocol using filtered back-projection (FBP) and iterative reconstruction (IR).
MATERIALS AND METHODS: Forty patients investigated by cervical spine CT were prospectively randomised into two groups: SD (120 kVp, 275 mAs) and LD (120 kVp, 150 mAs), both applying automatic tube current modulation. Data were reconstructed using both FBP and sinogram-affirmed IR. Image noise, signal-to-noise (SNR) and contrast-to-noise (CNR) ratios were measured. Two radiologists independently and blindly assessed the following anatomical structures at C3-C4 and C6-C7 levels, using a four-point scale: intervertebral disc, content of neural foramina and dural sac, ligaments, soft tissues and vertebrae. They subsequently rated overall image quality using a ten-point scale.
RESULTS: For both protocols and at each disc level, IR significantly decreased image noise and increased SNR and CNR, compared with FBP. SNR and CNR were statistically equivalent in LD-IR and SD-FBP protocols. Regardless of the dose and disc level, the qualitative scores with IR compared with FBP, and with LD-IR compared with SD-FBP, were significantly higher or not statistically different for intervertebral discs, neural foramina and ligaments, while significantly lower or not statistically different for soft tissues and vertebrae. The overall image quality scores were significantly higher with IR compared with FBP, and with LD-IR compared with SD-FBP.
CONCLUSION: LD-IR cervical spine CT provides better image quality for intervertebral discs, neural foramina and ligaments, and worse image quality for soft tissues and vertebrae, compared with SD-FBP, while reducing radiation dose by approximately 40 %.
Pubmed
Web of science
Open Access
Oui
Création de la notice
04/07/2013 19:39
Dernière modification de la notice
01/10/2019 6:19
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