Title :
Electromechanical simulator for cardiac catheter positioning: testing device for the intraventricular impedance imaging system
Author :
Wei, Wei ; Kun, Stevan ; Peura, Robert A.
Author_Institution :
Dept. of Biomed. Eng., Worcester Polytech. Inst., MA, USA
Abstract :
An electromechanical simulator for cardiac catheter positioning testing has been developed to experimentally evaluate the Intraventricular Impedance Imaging (III) system performance. Such an approach eliminates numerous problems associated with in vivo testing. This paper presents the results of such a modeling technique. The intraventricular probe positioning was realized as 3-D probe movement (static) or/and cardiac volume variation (dynamic), using hardware and/or software control modes. A ventricle imaging model was built using a 3-compartment simulator representing the blood, myocardium and lungs. Experimental results show that the model provides a static positioning resolution of 0.01-0.15 mm, dynamic volumetric resolution of 0.08 ml, and phantom resistivity contrast for blood:myocardium:lungs of 1:3.4:7.3
Keywords :
bioelectric phenomena; blood; cardiology; electric impedance imaging; image resolution; lung; patient treatment; 3-D probe movement; 3-compartment simulator; blood; cardiac arrhythmia treatment; cardiac catheter positioning; cardiac volume variation; dynamic volumetric resolution; electromechanical simulator; hardware control modes; intraventricular impedance imaging system; intraventricular probe positioning; lungs; myocardium; phantom resistivity contrast; software control modes; static positioning resolution; testing device; ventricle imaging model; Blood; Catheters; Hardware; Impedance; In vivo; Lungs; Myocardium; Probes; System performance; System testing;
Conference_Titel :
Bioengineering Conference, 1995., Proceedings of the 1995 IEEE 21st Annual Northeast
Conference_Location :
Bar Harbor, ME
Print_ISBN :
0-7803-2692-X
DOI :
10.1109/NEBC.1995.513738
