Modeling of temperature mapping for quantitative dynamic infrared coronary angiography for intraoperative graft patency control Jens Garbade, MD, Cris.

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Presentation transcript:

Modeling of temperature mapping for quantitative dynamic infrared coronary angiography for intraoperative graft patency control Jens Garbade, MD, Cris Ullmann, Marcus Hollenstein, Markus Johannes Barten, MD, Stephan Jacobs, MD, Stefan Dhein, MD, Thomas Walther, MD, Jan Fritz Gummert, MD, Volkmar Falk, MD, Friedrich-Wilhelm Mohr, MD The Journal of Thoracic and Cardiovascular Surgery Volume 131, Issue 6, Pages 1344-1351 (June 2006) DOI: 10.1016/j.jtcvs.2005.12.066 Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 Dynamic infrared imaging of a pig heart with antegrade left anterior descending artery perfusion to the steady-state temperature distribution of the left anterior descending artery network. Experimental condition and mathematic description are shown. LAD, Left anterior descending artery. The Journal of Thoracic and Cardiovascular Surgery 2006 131, 1344-1351DOI: (10.1016/j.jtcvs.2005.12.066) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Experimental model. LAD, Left anterior descending artery; I, distance between dynamic infrared imaging scanner and epicardium; T, temperature; TTFM, transit-time Doppler flowmeter. The Journal of Thoracic and Cardiovascular Surgery 2006 131, 1344-1351DOI: (10.1016/j.jtcvs.2005.12.066) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 3 Curve fit for epimyocardial temperature measurements in relation to the original data points. Mathematic τ evaluation obtained for different flow rates: A, flow 1; B, flow 2. The Journal of Thoracic and Cardiovascular Surgery 2006 131, 1344-1351DOI: (10.1016/j.jtcvs.2005.12.066) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 4 Comparison between different left anterior descending artery flow rates and the corresponding evaluated time constant (τ). Confidence and prediction lines are shown. The Journal of Thoracic and Cardiovascular Surgery 2006 131, 1344-1351DOI: (10.1016/j.jtcvs.2005.12.066) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 5 Curve fit for epimyocardial temperature measurements and graphic τ evaluation by using the 63% criterion for the maximal achieved temperature: flow 1 and 2. The Journal of Thoracic and Cardiovascular Surgery 2006 131, 1344-1351DOI: (10.1016/j.jtcvs.2005.12.066) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 6 Epimyocardial movement of temperature response of the left anterior descending artery coronary tree in beating-heart surgery. The Journal of Thoracic and Cardiovascular Surgery 2006 131, 1344-1351DOI: (10.1016/j.jtcvs.2005.12.066) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 7 Curve fit and successful elimination of epimyocardial movement obtained during off-pump surgery (left internal thoracic artery–left anterior descending artery): A, mathematic τ evaluation; B, graphic τ evaluation. The Journal of Thoracic and Cardiovascular Surgery 2006 131, 1344-1351DOI: (10.1016/j.jtcvs.2005.12.066) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions