Relationship between the pixel value in digital subtraction angiography and iodine concentration: Study in high iodine concentration with original phantom

Koichi Chida, Sai Masahiro, Haruo Saito, Kei Takase, Masayuki Zuguchi, Masatoshi Sasaki, Tokutaro Sato

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Quantitative digital subtraction angiography (DSA) image analysis based on densitometry is widely accepted and used. For the densitometoric DSA image analysis, it is required that there is a linear relationships between the pixel values on DSA images (DSA values) and contrast medium iodine concentration or the thickness of the vessels or the chambers filled with contrast material. We studied on relationship between the DSA value and iodine concentration especially in high iodine concentration. As for the relationship between DSA values and iodine concentration on the DSA images at low concentration, DSA phantom had a good linear relationship. However, the relationship at the high iodine concentration, DSA phantom sometimes lost this linear relationship. Our results suggested that it was necessary to identify relationship between DSA values and iodine concentration in each DSA system, especially in high iodine concentration setting, for densitometoric DSA image analysis.

Original languageEnglish
Pages (from-to)169-176
Number of pages8
JournalTohoku Journal of Experimental Medicine
Volume190
Issue number3
DOIs
Publication statusPublished - 2000 Mar

Keywords

  • Angiocardiography
  • Coronary arteriography
  • Densitometoric analysis
  • Digital subtraction angiography
  • Quantitative analysis

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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