A human version of Korean total artificial heart(TAM) was designed basso on the magnetic resonance imaging(MRI) data To obtain accurate measurement or human thoracic structure including the valvular sited we analyzed the dimensions of the natural heart of healthy persons and cardiomyopathy(CM) patients. The MRI findings were analyzed to measure the volume of the thoracic cavity that would be occupied by the TAM. The design upgrade of the mechanical performed was also performed with the computer aided design(CAD) system to develop a new version of Korean TAH.