Four-dimensional ct analysis using sequential 3d-3d registration

Satoshi Oki, Kazuya Kaneda, Yoshitake Yamada, Minoru Yamada, Yutaro Morishige, Kengo Harato, Noboru Matsumura, Takeo Nagura, Masahiro Jinzaki

研究成果: Article査読

6 被引用数 (Scopus)


Four-dimensional computed tomography (4DCT) provides a series of volume data and visualizes joint motions. However, numerical analysis of 4DCT data remains difficult because segmentation in all volumetric frames is time-consuming. We aimed to analyze joint kinematics using a sequential 3D-3D registration technique to provide the kinematics of the moving bone with respect to the fixed bone semiautomatically using 4DCT DICOM data and existing software. Surface data of the source bones are reconstructed from 3DCT. The trimmed surface data are respectively matched with surface data from the first frame in 4DCT. These trimmed surfaces are sequentially matched until the last frame. These processes provide positional information for target bones in all frames of the 4DCT. Once the coordinate systems of the target bones are decided, translation and rotation angles between any two bones can be calculated. This 4DCT analysis offers advantages in kinematic analyses of complex structures such as carpal or tarsal bones. However, fast or large-scale motions cannot be traced because of motion artifacts.

ジャーナルJournal of Visualized Experiments
出版ステータスPublished - 2019 11月

ASJC Scopus subject areas

  • 神経科学一般
  • 化学工学一般
  • 生化学、遺伝学、分子生物学一般
  • 免疫学および微生物学一般


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