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69. 'Stereovectorcardiogram' made by stereolithography.

Author Kinoshita S, Konishi G, Takeuchi S, Ukai T, Taniguchi H Institution Health Administration Center, Faculty of Engineering, Hokkaido University, Sapporo, Japan.

Source Cardiology 1990;77(4):269-71

Abstract A method for making directly a single solid vectorcardiogram is reported. A solid vectorcardiogram was made by employing an apparatus for production of three-dimensional objects by stereolithography. Stereolithography is a computer-aided manufacturing technique that is practiced in conjunction with computer-aided design and engineering. To design the solid vectorcardiogram, voltages in the X, Y and Z axes obtained according to the Frank lead are memorized in the computer-aided design system. By use of the stereolithography apparatus, the designed solid vectorcardiogram is formed in a vat filled with liquid plastic. In the vat, the plastic changes rapidly from liquid to solid in the presence of ultraviolet light so that a solid vectorcardiogram made of solid plastic may be formed. XX



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