Volume 62, Issue 2 pp. 175-180
Coronary Artery Disease

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

Yuxin Li MD

Yuxin Li MD

Division of Cardiology, Second Department of Medicine, Nihon University School of Medicine, Tokyo, Japan

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Junko Honye MD

Junko Honye MD

Division of Cardiology, Second Department of Medicine, Nihon University School of Medicine, Tokyo, Japan

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Satoshi Saito MD

Corresponding Author

Satoshi Saito MD

Division of Cardiology, Second Department of Medicine, Nihon University School of Medicine, Tokyo, Japan

Division of Cardiology, Second Department of Medicine, Nihon University School of Medicine, 30-1 Oyaguchi-Kami-machi, Itabashi-ku, Tokyo, 173-8610, JapanSearch for more papers by this author
Tadateru Takayama MD

Tadateru Takayama MD

Division of Cardiology, Second Department of Medicine, Nihon University School of Medicine, Tokyo, Japan

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Shin-Ichiro Yokoyama MD

Shin-Ichiro Yokoyama MD

Division of Cardiology, Second Department of Medicine, Nihon University School of Medicine, Tokyo, Japan

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Tadahiro Saruya MD

Tadahiro Saruya MD

Division of Cardiology, Second Department of Medicine, Nihon University School of Medicine, Tokyo, Japan

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Motoko Kotani MD

Motoko Kotani MD

Division of Cardiology, Second Department of Medicine, Nihon University School of Medicine, Tokyo, Japan

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Kazuo Harasawa MD

Kazuo Harasawa MD

Division of Cardiology, Second Department of Medicine, Nihon University School of Medicine, Tokyo, Japan

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Hideyuki Ando MD

Hideyuki Ando MD

Division of Cardiology, Second Department of Medicine, Nihon University School of Medicine, Tokyo, Japan

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Masayoshi Endo MD

Masayoshi Endo MD

Division of Cardiology, Second Department of Medicine, Nihon University School of Medicine, Tokyo, Japan

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Katsuo Kanmatsuse MD

Katsuo Kanmatsuse MD

Division of Cardiology, Second Department of Medicine, Nihon University School of Medicine, Tokyo, Japan

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First published: 21 May 2004
Citations: 12

Abstract

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.

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