European Radiology

, Volume 17, Issue 11, pp 2829–2837 | Cite as

Influence of heart rate on diagnostic accuracy and image quality of 16-slice CT coronary angiography: comparison of multisegment and halfscan reconstruction approaches

  • Marc DeweyEmail author
  • Florian Teige
  • Michael Laule
  • Bernd Hamm


The lower the heart rate the better image quality in multislice computed tomography (MSCT) coronary angiography. We prospectively assessed the influence of heart rate on per-patient diagnostic accuracy and image quality of MSCT coronary angiography and compared adaptive multisegment and standard halfscan reconstruction. A consecutive cohort of 126 patients scheduled to undergo conventional coronary angiography was examined with 16-slice CT. For all heart rate groups, per-patient diagnostic accuracy was significantly higher for multisegment than halfscan reconstruction with values of 95 vs. 79% (p < 0.05, <65 bpm, 38 patients), 85 vs. 66% (p < 0.05, 65–74 bpm, 47 patients), and 78% vs. 41% (p < 0.001, >74 bpm, 41 patients). Differences in diagnostic accuracy between adjacent heart rate groups were only significant for halfscan reconstruction for the comparison between the 65–74 and >74 bpm group (p < 0.05). The vessel lengths free of motion artifacts were significantly longer with multisegment reconstruction in all heart rate groups and for all coronary arteries (p < 0.005). For noninvasive MSCT coronary angiography, both per-patient diagnostic accuracy and image quality decline with increasing heart rate, and multisegment reconstruction at high heart rates yields similar results as standard halfscan reconstruction at low heart rates.


Computed tomography Coronary vessels Sensitivity Cardiac Segmentation 


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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Marc Dewey
    • 1
    Email author
  • Florian Teige
    • 1
  • Michael Laule
    • 2
  • Bernd Hamm
    • 1
  1. 1.Department of RadiologyCharité - Universitätsmedizin Berlin, Humboldt-Universität zu BerlinBerlinGermany
  2. 2.Department of Cardiology, CharitéBerlinGermany

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