Image quality of the coronary angiography with noise reduction technology to decrease the radiation dose

Masayuki Kumashiro, Takahiro Kataoka, Shinobu Yokota, Shinobu Nakagawa, Keisuke Otsuki, Nobuyuki Miyake, Shinji Osumi, Kiyonori Yamaoka

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We examined the effects of a reduced exposure dose on the quality of images from an angiography device augmented with a noise reduction algorithm. Before its clinical application, we compared the diameter of the discrimination limit of the hole with that in the conventional method by a visual evaluation with a contrast-detail (C-D) phantom imaged using the target dose. Based on the results, a reducible dose was determined and applied clinically. The sample population consisted of patients being followed up after percutaneous coronary intervention (PCI) for coronary artery disease; we evaluated the effects of the exposure reduction on image quality. A significant dose reduction was observed by the noise-reduction method compared to the conventional method; the radiation dose to the flat panel detector (FPD) could be reduced to 70 nGy per frame. Clinically, a dose reduction of approx. 40% was obtained while maintaining image quality almost equal to that of the conventional method.

Original languageEnglish
Pages (from-to)153-164
Number of pages12
JournalActa Medica Okayama
Volume72
Issue number2
Publication statusPublished - Jan 1 2018

Keywords

  • Contrast-detail phantom
  • Image quality
  • Noise reduction
  • Percutaneous coronary intervention
  • Radiation dose

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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