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Value of acceleration flow and the prestenotic to stenotic coronary flow velocity ratio by transthoracic color doppler echocardiography in noninvasive diagnosis of restenosis after percutaneous transluminal coronary angioplasty

Takeshi Hozumi, MD^*, Kiyoshi Yoshida, MD, FACC^*, Takashi Akasaka, MD^*, Yoshio Asami, MD^*, Yumiko Kanzaki, MD^*, Yoshiaki Ueda, MD^*, Atsushi Yamamuro, MD^*, Tsutomu Takagi, MD^* and Junichi Yoshikawa, MD, FACC

^* Division of Cardiology, Kobe General Hospital, Kobe, Japan; Kobe, Japan
First Department of Internal Medicine, Osaka City University Medical School, Osaka, Japan

View larger version (40K): [in a new window]   Figure 1 An example of coronary flow velocity recordings in the proximal left anterior descending coronary artery (LAD) by transthoracic color Doppler echocardiography shows localized aliasing in the proximal LAD (upper panel). Pulsed Doppler recording is shown at the color aliasing (lower left panel) and upstream from the color aliasing (lower right panel).

View larger version (18K): [in a new window]   Figure 2 Relation between the prestenotic to stenotic mean diastolic velocity (MDV) ratio and % diameter stenosis of the percutaneous transluminal coronary angioplasty lesions in patients with localized aliasing by transthoracic color Doppler echocardiography.