Reduction of moving artifacts caused by breathing in rats for in vivo micro-computed tomography

Toshihiko Amemiya, Hisaya Yamada, Shoji Kawashima, Kunihiko Sawada, Kenichiro Ejima, Kunihito Matsumoto, Yoshinori Arai, Kazuya Honda

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Objectives: This study developed software for the reduction of moving artifacts caused by breathing in rats by means of teeth tracking when CT images were taken using in vivo micro-computed tomography (micro-CT).

Methods: Raw projection data from the CT of teeth in rats were chosen retrospectively, and then correlated with moving artifacts caused by breathing. An m-mode image was reconstructed from the projection data and used to calculate motion as a function of position. The projection data were corrected and the CT images were reconstructed using the corrected projection data.

Results: The reconstructed CT images were sharper than the original CT images. There was fog in the periodontal ligament space in the original images because of motion artifacts. The images were clearer after processing.

Conclusions: The artifacts caused by breathing in in vivo micro-CT images of rat teeth were reduced using this software.

Original languageEnglish
Pages (from-to)59-64
Number of pages6
JournalOral Radiology
Issue number1
Publication statusPublished - Jan 2015


  • Bone imaging
  • In vivo
  • Micro-computed tomography
  • Motion artifact


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