During the examination, the patient lies on his back; in cases of difficulties with visualizing the kidneys in other positions (on the side, back, standing). The doctor puts an ultrasound head emitting ultrasound waves to the body shells. The head is moved from the hypochondrium to the posterior region of the lower chest, to the side of the spine and along the lower abdomen. The image from inside the abdominal cavity appears on the monitor screen in real time. During the examination, the doctor may ask the patient to use the toilet and then re-evaluate the urinary tract. The ultrasound examination takes about 15-20 minutes and is completely painless and safe.