Relationship between the Pixel Value in Digital Subtraction Angiography and Iodine Concentration: Study in High Iodine Concentration with Original Phantom

• Chida Koichi

  Department of Clinical Radiology, Tohoku University Hospital Section of Internal Medicine and Disability Prevention, Tohoku University Graduate School of Medicine

• Sai Masahiro

  Department of Clinical Radiology, Tohoku University Hospital

• Saito Haruo

  Department of Radiology, Tohoku University School of Medicine

• Takase Kei

  Department of Radiology, Tohoku University School of Medicine

• Zuguchi Masayuki

  Department of Radiological Technology, College of Medical Sciences, Tohoku University

• Sasaki Masatoshi

  Department of Clinical Radiology, Tohoku University Hospital

• Sato Tokutaro

  Section of Internal Medicine and Disability Prevention, Tohoku University Graduate School of Medicine

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.

Journal

• The Tohoku Journal of Experimental Medicine

  The Tohoku Journal of Experimental Medicine 190 (3), 169-176, 2000

  Tohoku University Medical Press

Keywords

• digital subtraction angiography
• densitometoric analysis
• quantitative analysis
• coronary arteriography
• angiocardiography

Details

• CRID: 1390001204240512768
• NII Article ID: 10013014612
• NII Article ID: 130004459043
• NII Book ID: AA00863920
• DOI: 10.1620/tjem.190.169
• COI: 1:STN:280:DC%2BD3c3jvFSksw%3D%3D
• ISSN: 13493329
• ISSN: 00408727
• HANDLE: 10097/52699
• PubMed: 10778800
• Web Site: https://tohoku.repo.nii.ac.jp/records/13232
• Web Site: http://www.jstage.jst.go.jp/article/tjem/190/3/190_3_169/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2000170483
• Text Lang: en
• Data Source:
  • JaLC
  • IRDB
  • Crossref
  • PubMed
  • CiNii Articles
• Abstract License Flag: Disallowed