Reducing CT radiation dose with iterative reconstruction algorithms: The influence of scan and reconstruction parameters on image quality and CTDIvol

Reducing CT radiation dose with iterative reconstruction algorithms: The influence of scan and reconstruction parameters on image quality and CTDIvol

Highlights • Iterative reconstruction (IR) and filtered back projection (FBP) were compared. • CT image noise was reduced by 12.4%–52.2% using IR in comparison to FBP. • IR did not affect high- and low-contrast resolution. • CTDIvol was reduced by 26–50% using hybrid IR at comparable image quality l...

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Veröffentlicht in:European journal of radiology 2014-09, Vol.83 (9), p.1645-1654
Hauptverfasser: Klink, Thorsten, Obmann, Verena, Heverhagen, Johannes, Stork, Alexander, Adam, Gerhard, Begemann, Philipp
Format: Artikel
Sprache:eng
Schlagworte:
Algorithms
Computed tomography
Hybrid iterative reconstruction
Image Processing, Computer-Assisted - methods
Image Processing, Computer-Assisted - statistics & numerical data
Image quality
Observer Variation
Phantom
Phantoms, Imaging
Radiation Dosage
Radiation dose
Radiographic Image Interpretation, Computer-Assisted - methods
Radiology
Signal-To-Noise Ratio
Tomography, X-Ray Computed - methods
Tomography, X-Ray Computed - statistics & numerical data
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Zusammenfassung:Highlights • Iterative reconstruction (IR) and filtered back projection (FBP) were compared. • CT image noise was reduced by 12.4%–52.2% using IR in comparison to FBP. • IR did not affect high- and low-contrast resolution. • CTDIvol was reduced by 26–50% using hybrid IR at comparable image quality levels. • IR produced good to excellent image quality in patients.
ISSN:0720-048X
1872-7727
DOI:10.1016/j.ejrad.2014.05.033