A method of determining endothelial dependent vasoactivity of a subject, the method is effected by recording pressure-related signals of a plurality of locations adjacent to at least one blood vessel; extracting at least one parameter from the pressure-related signals; and using the at least one parameter...http://www.google.com.tw/patents/US7374541?utm_source=gb-gplus-share專利 US7374541 - System for determining endothelial dependent vasoactivity