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Variability in quantitative measurement of the same segment with two different intravascular ultrasound systems: In vivo and in vitro studies
Author(s) -
Li Yuxin,
Honye Junko,
Saito Satoshi,
Takayama Tadateru,
Yokoyama ShinIchiro,
Saruya Tadahiro,
Kotani Motoko,
Harasawa Kazuo,
Ando Hideyuki,
Endo Masayoshi,
Kanmatsuse Katsuo
Publication year - 2004
Publication title -
catheterization and cardiovascular interventions
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.988
H-Index - 116
eISSN - 1522-726X
pISSN - 1522-1946
DOI - 10.1002/ccd.20052
Subject(s) - intravascular ultrasound , medicine , lumen (anatomy) , in vivo , stenosis , reproducibility , ultrasound , catheter , biomedical engineering , radiology , nuclear medicine , statistics , microbiology and biotechnology , mathematics , biology
We evaluated two different intravascular ultrasound (IVUS) systems, Atlantis and Intrafocus, to verify their accuracy and reproducibility. In an in vivo study on 20 consecutive patients with coronary artery diseases, the minimum lumen diameter (MLD), vessel diameter, lumen area (LA), vessel area, plaque area, and area stenosis rate (% AS) were respectively measured. In an in vitro study, MLD and LA were measured in four metal tubes with different diameters. All of the measured values except for % AS by Atlantis were significantly larger than the values obtained with Intrafocus. Nonuniform rotational distortion (NURD) was estimated as 34% in Atlantis and 1% in Intrafocus. The measurements by Atlantis were larger than the true values while the measurements by Intrafocus were less than the true values in all four metal tubes. These findings suggest that we should clearly avoid the use of different IVUS systems in the same study. Catheter Cardiovasc Interv 2004;62:175–180. © 2004 Wiley‐Liss, Inc.