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The usefulness of full-iterative reconstruction algorithm for the visualization of cystic artery on CT angiography

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A Correction to this article was published on 01 April 2020

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Abstract

Purpose

To evaluate the potential of full-iterative reconstruction (IR) for improving image quality of the cystic artery on CT angiography and to assess observer performance.

Methods

Thirty patients who underwent both liver dynamic CT and conventional angiography were included in this retrospective study. All CT data were reconstructed through filtered back projection (FBP), adaptive iterative dose reduction 3D (AIDR3D), and forward-projected, model-based, iterative reconstruction solution (FIRST), respectively. In objective study, we analyzed mean ΔCT numbers (the difference between the HU peak of the vessel and the background) and full-width at tenth-maximum (FWTM) of three parts of the cystic artery by profile curve method comparing the three reconstructions. Subjectively, visualization was evaluated using a four-point scale performed by two blinded observers. ANOVA was used for statistical analysis.

Results

In all parts of the cystic artery, the mean ΔCT number of FIRST was shown to be significantly better than that of FBP and AIDR3D (p < 0.05). FWTM in FIRST was the smallest in all of the vessels. The mean visualization score was significantly better with FIRST than with other CT reconstructions (p < 0.05).

Conclusions

The FIRST algorithm led to improved CTA visualization of the cystic artery.

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Change history

  • 01 April 2020

    The authors wish to replace the Table 1.

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Authors and Affiliations

  1. Department of Radiology, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan

    Toshihiko Hamamura, Yoshiko Hayashida, Yohei Takeshita, Koichiro Sugimoto, Issei Ueda, Koichiro Futatsuya, Shingo Kakeda, Takatoshi Aoki & Yukunori Korogi

Authors
  1. Toshihiko Hamamura
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  2. Yoshiko Hayashida
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  3. Yohei Takeshita
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  4. Koichiro Sugimoto
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  5. Issei Ueda
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  6. Koichiro Futatsuya
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  7. Shingo Kakeda
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  8. Takatoshi Aoki
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  9. Yukunori Korogi
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Correspondence to Toshihiko Hamamura.

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The authors declare that they have no conflict of interest.

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All applicable institutional and national guidelines for the care and use of animals were followed.

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The study was approved by our institutional review board, and the requirement for informed consent had been waived.

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Hamamura, T., Hayashida, Y., Takeshita, Y. et al. The usefulness of full-iterative reconstruction algorithm for the visualization of cystic artery on CT angiography. Jpn J Radiol 37, 526–533 (2019). https://doi.org/10.1007/s11604-019-00839-x

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  • DOI: https://doi.org/10.1007/s11604-019-00839-x

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