Title :
Remote optical stereoscopic multispectral imaging during cardiac surgery
Author :
Wieringa, F.P. ; Mastik, F. ; Duncker, D.J.G.M. ; Bogers, A.J.J.C. ; Zeelenberg, C. ; van der Steen, Anton F. W.
Author_Institution :
Erasmus MC, Thorax Centre, Rotterdam
Abstract :
Within the near infrared (NIR), coronary arteries show higher contrasts against the myocardium than coronary veins. Also, NIR can penetrate deeper into tissue than visible light (VIS). This opens perspectives to enhance coronary vasculature by combining VIS and NIR images. This may be useful in instances like intramyocardial course of coronary arteries, increased epicardial fat, epicardial adhesions after previous surgery, or pericarditis. Two cameras, with dual-band LED-arrays, alternately capture VIS color frames (400-780 nm) and NIR grey- scale frames (910-920 nm). Arterial NIR contrasts are distinguished from shadows and surface reflections, selectively enhanced, and back-projected in stereoscopic VIS color video. Proof of principle has been delivered on porcine and human hearts using off-line processing. We present these results and some of our work in progress.
Keywords :
biological effects of optical radiation; cardiology; cellular biophysics; electromyography; light emitting diodes; medical control systems; medical image processing; surgery; NIR grey-scale frames; alternately capture VIS color frames; back-projected images; cameras; cardiac surgery; coronary arteries; coronary veins; dual-band LED-arrays; epicardial adhesions; epicardial fat; human heart; intramyocardial course; myocardium; near infrared spectra; off-line processing; pericarditis; porcine heart; remote optical stereoscopic multispectral imaging; surface reflections; tissue; visible light spectra; Adhesives; Arteries; Biomedical optical imaging; Cameras; Dual band; Multispectral imaging; Myocardium; Optical reflection; Surgery; Veins;
Conference_Titel :
Computers in Cardiology, 2006
Conference_Location :
Valencia
Print_ISBN :
978-1-4244-2532-7
