European Radiology

, Volume 17, Issue 1, pp 81–86 | Cite as

The impact of motion artifacts on the reproducibility of repeated coronary artery calcium measurements

  • Jun HoriguchiEmail author
  • Hiroshi Fukuda
  • Hideya Yamamoto
  • Nobuhiko Hirai
  • Farzana Alam
  • Hideaki Kakizawa
  • Masashi Hieda
  • Toshihiro Tachikake
  • Kazushi Marukawa
  • Katsuhide Ito


The purpose of this study is, using a 16-section multidetector-row helical computed tomography (MDCT) scanner with retrospective reconstruction, to compare variability in repeated coronary calcium scoring and qualitative scores of the motion artifacts. One hundred forty-four patients underwent two subsequent scans using MDCT. According to Agatston and volume algorithms, the coronary calcium scores during mid-diastole (the center corresponding to 70% of the R-R cycle) were calculated and the inter-scan variability was obtained. Motion artifacts from coronary artery calcium were subjectively evaluated and classified using a 5-point scale: 1, excellent; no motion artifacts; 2, fine, minor motion artifacts; 3, moderate, mild motion artifacts; 4, bad, severe motion artifacts; 5, poor, doubling or discontinuity. Each reading was done by vessels (left main, left descending, left circumflex and right coronary arteries) and the motion artifact score (mean of the scales) was determined per patient. The variability in the low (1.2±0.2) and high (2.4±0.6) motion artifact score groups was 7±6 (median, 6)% and 19±15 (16)% on the Agatston score (P<0.01) and 7±7 (6)% and 16±13 (14)% on the volume score (P<0.01), respectively. In conclusion, motion has a significant impact on the reproducibility of coronary calcium scoring.


Cardiac Coronary artery Calcification CT 


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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Jun Horiguchi
    • 1
    Email author
  • Hiroshi Fukuda
    • 1
  • Hideya Yamamoto
    • 2
  • Nobuhiko Hirai
    • 1
  • Farzana Alam
    • 3
  • Hideaki Kakizawa
    • 3
  • Masashi Hieda
    • 3
  • Toshihiro Tachikake
    • 3
  • Kazushi Marukawa
    • 3
  • Katsuhide Ito
    • 3
  1. 1.Department of Clinical RadiologyHiroshima University HospitalHiroshimaJapan
  2. 2.Department of Molecular and Internal Medicine, Division of Clinical Medical Science, Programs for Applied Biomedicine, Graduate School of Biomedical SciencesHiroshima UniversityHiroshimaJapan
  3. 3.Department of Radiology, Division of Medical Intelligence and Informatics, Programs for Applied Biomedicine, Graduate School of Biomedical SciencesHiroshima UniversityHiroshimaJapan

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