Fibrosis measurement device, fibrosis measurement method and property measurement device

A fibrosis measurement device that measures fibrosis of a biological tissue non-invasively, the fibrosis measurement device comprising:

• a sound wave emitter that performs scanning over a surface of a biological tissue as a measurement object to emit sound waves such that the sound waves are concentrated on a plurality of locations of the biological tissue;
• an electromagnetic wave receiver that receives an electromagnetic wave generated at each location of a biological tissue irradiated with the sound waves;
• a signal extractor that extracts a signal indicating at least one property selected from a group including electrical properties, magnetic properties, electromechanical properties, and magnetomechanical properties of the biological tissue, based on at least one selected from a group including the amplitude, phase, and frequency of an electromagnetic wave received by the electromagnetic wave receiver;
• an imaging unit that images, as a two-dimensional image, signals extracted by the signal extractor;
• and
• an area comparison unit that compares the area of a portion of the two-dimensional image in which signals indicating the property are displayed, with an area corresponding to a predetermined threshold of the strength of the signals, to extract the signals actually caused by fibrosis of a biological tissue from noise,
• wherein a plurality of piezoelectric elements are disposed on a concave curved surface, the concave curved surface has a shape so that the sound waves direct along directions perpendicular to the surface, and converge at a single focal point located at a target tissue.