Echoencephalograph

The echoencephalic examination method is one of the simplest ways to assess the structure and size of the brain.

The device is designed quite simply: the human skull is pulled apart and a small capsule is applied to the ear. The capsule diaphragm is moved by an electrical sensor, creating pulses. From the auricle to the brain, impulses are transmitted through the substance of the bone of the head, reflection from the grooves, other anatomical formations on the surface of the brain tissue, the occipital openings of the blood vessels, and the openings of the inner ear. All of them create delays, the duration of which is measured at the sensor output. If the brain or its structures are defective, there will be distortion of this reflected signal, which changes the path of the impulse as it is transmitted. This manifests itself as a disturbed "echo" - signals recorded by the detector at the output. The sensor switches the pressing force of the diaphragm, assessing how far the “echo sounder” goes deep into the brain tissue. This signal is sent to the screen so that the specialist can determine the presence of obstacles during the movement of the signal - there are always deviations from the norm.