Variability in quantitative measurement of the same segment with two different intravascular ultrasound systems: In vivo and in vitro studies

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, pl...

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Published in:Catheterization and cardiovascular interventions 2004-06, Vol.62 (2), p.175-180
Main Authors: Li, Yuxin, Honye, Junko, Saito, Satoshi, Takayama, Tadateru, Yokoyama, Shin-Ichiro, Saruya, Tadahiro, Kotani, Motoko, Harasawa, Kazuo, Ando, Hideyuki, Endo, Masayoshi, Kanmatsuse, Katsuo
Format: Article
Language:English
Subjects:
Aged
Calcinosis - diagnostic imaging
Calcinosis - epidemiology
Coronary Artery Disease - diagnostic imaging
Coronary Artery Disease - epidemiology
Equipment Design
Female
Humans
Image Enhancement
in vivo
Incidence
intravascular ultrasound
Male
Middle Aged
Observer Variation
quantitative measurement
Sensitivity and Specificity
Statistics as Topic
Ultrasonography, Interventional
variability of different systems
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Summary: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.
ISSN:1522-1946
1522-726X
DOI:10.1002/ccd.20052