Improving coronary artery imaging quality in the high heart rate region and on MDCT using a pulsating cardiac phantom

Yun Shen, Kosuke Sasaki, Yoshiyuki Okano, Masahiro Jinzaki, Masae Shinya, Koichi Sugisawa, Minoru Yamada, Kiyoshi Nagasawa, Sachio Kuribayashi

Research output: Contribution to journalArticle


The multi-sector reconstruction (MSR) algorithm and cardiac half-reconstruction (CHR) algorithm are the main algorithms used in cardiac reconstruction. Analysis of effective temporal resolution (TR) confirmed that optimal rotation speed depends on different heart rates when using MSR. During visualization (3D/MPR image) and quantitative (EF: ejection fraction) evaluations, it was found that image quality and measurement accuracy are well correlated with effective temporal resolution (TR) by the different algorithms. The CHR algorithm resulted in less desirable image quality at TR 250 ms than that from MSR at high heart rates (>75 bpm) in the phantom experiment. We determined that the combination of the MSR algorithm and the optimal selection of gantry rotation speed is important for obtaining high-quality cardiac imaging in the high heart rate region.

Original languageEnglish
Pages (from-to)506-513
Number of pages8
JournalNippon Hoshasen Gijutsu Gakkai zasshi
Issue number4
Publication statusPublished - 2005 Apr 20
Externally publishedYes


ASJC Scopus subject areas

  • Medicine(all)

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