Patent ID: 8328739

Claim:
Apparatus for measuring volume, the apparatus comprising: a substrate having a length, and a top and a bottom separated by a width, wherein the substrate is configured to extend, along the length of the substrate, around a portion of a subject; a first conductor fastened to the substrate and extending only once along the length of the substrate, the first conductor occupying a first portion of the width of the substrate corresponding to a first portion of the subject, wherein the first conductor has a first end and a second end, and wherein the first end is electrically coupled to a first electrical lead that exits the substrate, the first conductor configured to provide via the first electrical lead a signal representative of a volume corresponding to the first portion of the subject; and a second conductor fastened to the substrate and providing for the first conductor a return electrical path along the length of the substrate in a direction opposite to the first conductor, the second conductor extending only once along the length of the substrate and occupying a second portion of the width of the substrate, wherein the second conductor has a first end and a second end, the first end is electrically coupled to the second end of the first conductor, and the second end of the second conductor is electrically coupled to a second electrical lead that exits the substrate, the second conductor configured to generate a noise signal having an opposite polarity to a noise signal generated by the first conductor.