Simulated 50 % radiation dose reduction in coronary CT angiography using adaptive iterative dose reduction in three-dimensions (AIDR3D)

To compare the image quality of coronary CT angiography (CTA) studies between standard filtered back projection (FBP) and adaptive iterative dose reduction in three-dimensions (AIDR3D) reconstruction using CT noise additional software to simulate reduced radiation exposure. Images from 93 consecutiv...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:The International Journal of Cardiovascular Imaging 2013-06, Vol.29 (5), p.1167-1175
Hauptverfasser: Chen, Marcus Y., Steigner, Michael L., Leung, Steve W., Kumamaru, Kanako K., Schultz, Kurt, Mather, Richard T., Arai, Andrew E., Rybicki, Frank J.
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:To compare the image quality of coronary CT angiography (CTA) studies between standard filtered back projection (FBP) and adaptive iterative dose reduction in three-dimensions (AIDR3D) reconstruction using CT noise additional software to simulate reduced radiation exposure. Images from 93 consecutive clinical coronary CTA studies were processed utilizing standard FBP, FBP with 50 % simulated dose reduction (FBP50 %), and AIDR3D with simulated 50 % dose reduction (AIDR50 %). Signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were measured within 5 regions-of-interest, and image quality for each reconstruction strategy was assessed by two independent readers using a 4-point scale. Compared to FBP, the SNR measured from the AIDR50 % images was similar or higher (airway: 38.3 ± 12.7 vs. 38.5 ± 14.5, p  = 0.81, fat: 5.5 ± 1.9 vs. 5.4 ± 2.0, p  = 0.20, muscle: 3.2 ± 1.2 vs. 3.1 ± 1.3, p  = 0.38, aorta: 22.6 ± 9.4 vs. 20.2 ± 9.7, p  
ISSN:1569-5794
1573-0743
1875-8312
DOI:10.1007/s10554-013-0190-1