In vitro evaluation of multiple arterial stenoses using three-dimensional power Doppler angiography Zhenyu Guo, PhD, Louis-Gilles Durand, PhD, Louis.

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Presentation transcript:

In vitro evaluation of multiple arterial stenoses using three-dimensional power Doppler angiography Zhenyu Guo, PhD, Louis-Gilles Durand, PhD, Louis Allard, MSc, Guy Cloutier, PhD, Aaron Fenster, PhD Journal of Vascular Surgery Volume 27, Issue 4, Pages 681-688 (April 1998) DOI: 10.1016/S0741-5214(98)70234-4 Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 1Three-dimensional (3D) B-mode image (A) and 3D power Doppler angiogram (B) of the porcine artery with short stenoses. A steady flow of 25 ml/sec was used to generate the 3D power Doppler angiogram. Journal of Vascular Surgery 1998 27, 681-688DOI: (10.1016/S0741-5214(98)70234-4) Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 2Three-dimensional (3D) B-mode image (A) and 3D power Doppler angiogram (B) of the porcine artery with long stenoses. A steady flow of 25 ml/sec was used to generate the 3D power Doppler angiogram. Journal of Vascular Surgery 1998 27, 681-688DOI: (10.1016/S0741-5214(98)70234-4) Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 3Three dimensional (3D) power Doppler angiograms of the wall-less agar lumen show an 80% area reduction stenosis (A) and a 50% area reduction stenosis (B). Pulsatile flow with a peak flow rate of 15 ml/sec was used to generate these two 3D angiograms. Journal of Vascular Surgery 1998 27, 681-688DOI: (10.1016/S0741-5214(98)70234-4) Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 4Three-dimensional power Doppler angiograms of the central stenosis with an 80% area reduction generated with a steady flow of 10 ml/sec. A, Without proximal and distal stenoses. B, With a 70% proximal stenosis. C, With a 70% distal stenosis. D, With proximal and distal stenoses of 70%. Journal of Vascular Surgery 1998 27, 681-688DOI: (10.1016/S0741-5214(98)70234-4) Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 5Cross-sectional flow areas are plotted against the length of the porcine artery for short multiple stenoses (A) and long multiple stenoses (B). The top, solid curve represents the mean area obtained by averaging five 3D power Doppler angiograms generated for five steady flows with flow rates of 10, 15, 20, 25, and 30 ml/sec. The bottom, solid curve corresponds to one standard deviation of these means. Cross-sectional areas estimated from 3D B-mode images are shown as open circles, and the error bars represent one standard deviation. Journal of Vascular Surgery 1998 27, 681-688DOI: (10.1016/S0741-5214(98)70234-4) Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 6The cross-sectional flow area is plotted against the length of the 80% area reduction stenotic wall-less lumen. The areas are means averaged from five 3D power Doppler angiograms generated with the use of pulsatile flow with flow rates of 5, 7.5 10, 12.5, and 15 ml/sec. The bottom, solid curve corresponds to one standard deviation of the means. The true cross-sectional flow areas are shown as the dashed curve. A, Without proximal and distal stenosis. B, With a 70% proximal stenosis. C, With a 70% distal stenosis. D, With proximal and distal stenoses of 70%. Journal of Vascular Surgery 1998 27, 681-688DOI: (10.1016/S0741-5214(98)70234-4) Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 7Three-dimensional power Doppler angiogram with a cross-sectional cutting plane provides a transverse view of the flow lumen. The upper curve represents the Doppler power plotted across the diameter of the lumen. Journal of Vascular Surgery 1998 27, 681-688DOI: (10.1016/S0741-5214(98)70234-4) Copyright © 1998 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions