Three-dimensional quantification of cardiac surface motion: A newly developed three- dimensional digital motion-capture and reconstruction system for beating.

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Presentation transcript:

Three-dimensional quantification of cardiac surface motion: A newly developed three- dimensional digital motion-capture and reconstruction system for beating heart surgery Toshiki Watanabe, MD, Sadao Omata, PhD, Motoki Odamura, PhD, Masahumi Okada, PhD, Yoshihiko Nakamura, PhD, Hitoshi Yokoyama, MD The Journal of Thoracic and Cardiovascular Surgery Volume 132, Issue 5, Pages 1162-1171 (November 2006) DOI: 10.1016/j.jtcvs.2006.07.017 Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 A schematic overview of this newly developed system. The X-axis was classified as the direction from the “head to tail” of the pig, the Y-axis was classified as the “left to right” side of the operating table, and the Z-axis was classified as the “upward” vertical angle from the pig. 2D, Two-dimensional; 3D, 3-dimensional. The Journal of Thoracic and Cardiovascular Surgery 2006 132, 1162-1171DOI: (10.1016/j.jtcvs.2006.07.017) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Fixing three markers to a target point (the left anterior descending coronary artery) under stabilization by Octopus 4.3 stabilizer. Each marker was connected by titanium wire and fixed on epicardium by 6-0 polypropylene. The Journal of Thoracic and Cardiovascular Surgery 2006 132, 1162-1171DOI: (10.1016/j.jtcvs.2006.07.017) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 3 Inspection of the system in each axis using three stepping motors. Data are presented as mean ± standard deviation. The Journal of Thoracic and Cardiovascular Surgery 2006 132, 1162-1171DOI: (10.1016/j.jtcvs.2006.07.017) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 4 A representative 3-dimensional reconstruction of cardiac surface motion at left anterior descending artery (LAD), right coronary artery (RCA), and left circumflex artery (LCX) before stabilization (A) and after stabilization (B). The Journal of Thoracic and Cardiovascular Surgery 2006 132, 1162-1171DOI: (10.1016/j.jtcvs.2006.07.017) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 5 Plots of planar motion in x-axis at the LAD before and after stabilization. Upper panel is shown as under mechanical ventilation. Lower panel is shown as under non-mechanical ventilation. The Journal of Thoracic and Cardiovascular Surgery 2006 132, 1162-1171DOI: (10.1016/j.jtcvs.2006.07.017) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 6 Graphs of rate (%) after stabilization compared with baseline. Baseline is value before stabilization. Vertical bars are standard deviation. *P < .0001 compared with maximum velocity. **P < .0001 compared with maximum acceleration. ***P < .0001 compared with maximum deceleration. LAD, Left anterior descending coronary artery; RCA, right coronary artery; LCX, left circumflex coronary artery. The Journal of Thoracic and Cardiovascular Surgery 2006 132, 1162-1171DOI: (10.1016/j.jtcvs.2006.07.017) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 7 Comparison of single-axis Cartesian maximum amplitude (A), maximum velocity (B), average velocity (C), and maximum acceleration (D) before and after stabilization at each axis. Vertical bars are standard deviation. *P < .0001 compared same group with z-axis before stabilization. **P < .0001 compared same group with z-axis after stabilization. LAD, Left anterior descending coronary artery; RCA, right coronary artery; LCX, left circumflex coronary artery. The Journal of Thoracic and Cardiovascular Surgery 2006 132, 1162-1171DOI: (10.1016/j.jtcvs.2006.07.017) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 8 Comparison of 3-dimensional Cartesian move distance of 1 cardiac cycle (A), maximum velocity (B), average velocity (C), and maximum acceleration (D) before and after stabilization at heart rates of 100, 120, and 140 beats/min. Vertical bars are standard deviation. *P < .01 compared same group with 140-beats/min heart rates. LAD, Left anterior descending coronary artery; RCA, right coronary artery; LCX, left circumflex coronary artery. The Journal of Thoracic and Cardiovascular Surgery 2006 132, 1162-1171DOI: (10.1016/j.jtcvs.2006.07.017) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions