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Influence of the motion correction algorithm on the quality and interpretability of images of single-source 64-detector coronary CT angiography among patients grouped by heart rate

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Abstract

Purpose

We retrospectively investigated the effect of the motion correction algorithm (MCA) on image quality and interpretability by heart rate (HR) in coronary CT angiography (CCTA).

Materials and methods

For 105 patients (6 HR groups) undergoing CCTA, 2 readers independently graded the image quality of the 4 major coronary arteries reconstructed with and without MCA at diastole with HR ≤64 bpm and at systole and diastole ≥65 bpm using a 5-point scale. For each HR group and cardiac phase, we compared per-vessel and per-segment image quality using Wilcoxon signed rank test and percentages of interpretable image quality (scores 3–5) among without MCA at diastole with HR ≤64 bpm, as a reference, with MCA at diastole ≤69 bpm and at systole 70–79 bpm using the chi-square test.

Results

The motion correction algorithm reconstruction provided similar or better image quality and interpretability in all groups, with 96–100 % per-vessel (P = 0.008 for the right coronary artery; otherwise, P > 0.05) and 99 % per-segment interpretable image quality (P = 0.0002) at diastole with HR ≤69 bpm and at systole 70–79 bpm compared to the reference (88–100 and 97 %, respectively).

Conclusion

MCA reconstruction preserved image quality and interpretability of CCTA with HR ≤79 bpm.

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Conflict of interest

Yun Shen is an employee of GE Healthcare. The other authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Department of Radiology, Tokyo Women’s Medical University Medical Center East, 2-1-10 Nishiogu, Arakawa-Ku, Tokyo, 116-8567, Japan

    Haruhiko Machida, Rika Fukui, Yun Shen, Isao Tanaka, Takuya Ishikawa, Etsuko Tate & Eiko Ueno

  2. Department of Radiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 2nd Ruijin Rd, Shanghai, 200025, China

    Xiao-Zhu Lin

  3. Department of Diagnostic Radiology, Saitama Red Cross Hospital, 8-3-33 Kamiochiai, Chuo-Ku, Saitama, 338-0001, Japan

    Shigeru Suzuki

Authors
  1. Haruhiko Machida
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  2. Xiao-Zhu Lin
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  3. Rika Fukui
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  4. Yun Shen
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  5. Shigeru Suzuki
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  9. Eiko Ueno
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Correspondence to Haruhiko Machida.

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Machida, H., Lin, XZ., Fukui, R. et al. Influence of the motion correction algorithm on the quality and interpretability of images of single-source 64-detector coronary CT angiography among patients grouped by heart rate. Jpn J Radiol 33, 84–93 (2015). https://doi.org/10.1007/s11604-014-0382-1

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  • DOI: https://doi.org/10.1007/s11604-014-0382-1

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