TY - JOUR
T1 - Relationship between the pixel value in digital subtraction angiography and iodine concentration
T2 - Study in high iodine concentration with original phantom
AU - Chida, Koichi
AU - Masahiro, Sai
AU - Saito, Haruo
AU - Takase, Kei
AU - Zuguchi, Masayuki
AU - Sasaki, Masatoshi
AU - Sato, Tokutaro
PY - 2000/3
Y1 - 2000/3
N2 - 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.
AB - 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.
KW - Angiocardiography
KW - Coronary arteriography
KW - Densitometoric analysis
KW - Digital subtraction angiography
KW - Quantitative analysis
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U2 - 10.1620/tjem.190.169
DO - 10.1620/tjem.190.169
M3 - Article
C2 - 10778800
AN - SCOPUS:0034150004
VL - 190
SP - 169
EP - 176
JO - Tohoku Journal of Experimental Medicine
JF - Tohoku Journal of Experimental Medicine
SN - 0040-8727
IS - 3
ER -