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Effect of energy difference in the evaluation of calcification size and luminal diameter in calcified coronary artery plaque using spectral CT

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Abstract

Purpose

This study evaluated the calcium blooming-reducing effect and the differences of luminal diameter among various-energy virtual monochromatic images (VMIs) using rapid kilovolt-switching dual-energy computed tomography (DECT).

Materials and methods

Forty-five calcified segments in 31 patients were analyzed. For the analysis, 40- to 140-keV VMIs on both non-contrast CT and coronary CT angiography were generated at 10-keV steps, and calcification size and luminal diameter were measured using CT number profile curve and full-width at half-maximum method. We compared calcification size and luminal diameter on each keV VMIs with those on 70-keV VMI.

Results

There was no significant differences among the 40- to 140-keV VMIs regarding calcification size or luminal diameter.

Conclusion

The 40- to 140-keV VMIs produced by single-source DECT had no effect on the calcification size or luminal diameter in the coronary artery.

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Author information

Authors and Affiliations

  1. Division of Radiology, Department of Pathophysiological Therapeutic Science, Faculty of Medicine, Tottori University, 36-1, Nishi-cho, Yonago, Tottori, 683-8504, Japan

    Hiroto Yunaga, Junichi Kishimoto, Shinichiro Kitao, Mana Ishibashi & Shinya Fujii

  2. Department of Radiology, National Cerebral and Cardiovascular Center, Osaka, Japan

    Yasutoshi Ohta

Authors
  1. Hiroto Yunaga
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  2. Yasutoshi Ohta
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  3. Junichi Kishimoto
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  4. Shinichiro Kitao
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  5. Mana Ishibashi
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  6. Shinya Fujii
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Contributions

All authors have contributed to the study conception and design. Conceptualization and methodology: HY, YO; data curation: HY, JK, SK, and MI; formal analysis, investigation, writing—original draft preparation: HY; writing—review and editing: YO and SF; supervision: SF. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Hiroto Yunaga.

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Conflict of interest

The authors declare that they have no conflict of interest.

Ethical statement

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed consent

This single-center retrospectively study protocol was approved by the institutional ethics committee, and written informed consent was waived.

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Cite this article

Yunaga, H., Ohta, Y., Kishimoto, J. et al. Effect of energy difference in the evaluation of calcification size and luminal diameter in calcified coronary artery plaque using spectral CT. Jpn J Radiol 38, 1142–1149 (2020). https://doi.org/10.1007/s11604-020-01027-y

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  • DOI: https://doi.org/10.1007/s11604-020-01027-y

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