Method of measuring the thickness of a biological tissue by ultrasounds and device for carrying out such method

A method of measuring a thickness of a biological tissue by ultrasounds comprising:

• providing an ultrasound probe emitting ultrasonic pulses within a body under examination and receiving echoes generated from structures of said body under examination, said probe comprising,
• an array of two or more electro-acoustic transducers,
• means for processing reception signals, and
• means for orienting one or more lines of sight, along which emission of said pulses or reception of said echoes is focused, according to different angles with respect to an axis perpendicular to an emitting surface of said probe;
• and
• calculating the thickness of said biological tissue by a time between reception of a first echo and reception of a second echo, which are relevant to a same ultrasonic pulse emitted along at least a line of sight oriented along an axis perpendicular to a surface of the biological tissue, said axis perpendicular to the surface of the biological tissue being defined by sequentially orienting the line of sight according to different angles, using said means for orienting,
• wherein, for each angle, intensity of the first echo is measured such that by iterating measurements according to the different angles and by comparing measured intensity values, an orientation of the line of sight having a maximum intensity of the first echo is defined, said orientation corresponding to said axis perpendicular to the surface of the biological tissue.