European Radiology

, Volume 19, Issue 7, pp 1645–1652 | Cite as

Automatic selection of optimal systolic and diastolic reconstruction windows for dual-source CT coronary angiography

  • H. SeifarthEmail author
  • M. Puesken
  • S. Wienbeck
  • D. Maintz
  • R. Fischbach
  • W. Heindel
  • K.-U. Juergens


The aim of this study was to assess the performance of a motion-map algorithm that automatically determines optimal reconstruction windows for dual-source coronary CT angiography. In datasets from 50 consecutive patients, optimal systolic and diastolic reconstruction windows were determined using the motion-map algorithm. For manual determination of the optimal reconstruction window, datasets were reconstructed in 5% steps throughout the RR interval. Motion artifacts were rated for each major coronary vessel using a five-point scale. Mean motion scores using the motion-map algorithm were 2.4 ± 0.8 for systolic reconstructions and 1.9 ± 0.8 for diastolic reconstructions. Using the manual approach, overall motion scores were significantly better (1.9 ± 0.5 and 1.7 ± 0.6, p < 0.05), but diagnostic image quality was reached in >90% of cases using either approach. Using the automated approach, there was a negative correlation between heart rate and motion scores for systolic reconstructions (ρ = −0.26, p < 0.05) and a positive correlation for diastolic reconstructions (ρ = 0.46, p < 0.01). For the manual approach, no significant correlation was found for systolic reconstructions (ρ = −0.1, p = 0.52), while there was a positive correlation for diastolic reconstructions (ρ = 0.48, p < 0.01). Thus, the motion-map algorithm is a useful tool to save time in finding an appropriate reconstruction window in patients with heart rates <70 bpm (diastolic reconstruction) and >80 bpm (systolic reconstruction).


Cardiac CT Reconstruction window Motion map Dual-source CT 


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Copyright information

© European Society of Radiology 2009

Authors and Affiliations

  • H. Seifarth
    • 1
    Email author
  • M. Puesken
    • 1
  • S. Wienbeck
    • 1
  • D. Maintz
    • 1
  • R. Fischbach
    • 2
  • W. Heindel
    • 1
  • K.-U. Juergens
    • 1
  1. 1.Department of Clinical RadiologyUniversity of MuensterMuensterGermany
  2. 2.Department of RadiologyAsklepios Klinik Hamburg AltonaHamburgGermany

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