TECHNIQUE used for producing IMAGES of internal organs and tissues.● The ultrasound scanner is a device which uses ultrasonic waves for capturing the images of internal organs and tissues.● Ultrasonic waves travel through the BODY and get reflected back where there is a change in tissue density.● These waves are then converted into electrical signals, which in TURN are used to generate images of the organs.● It is used for examination of the foetus during pregnancy to check for any abnormalities.● It is also used to break stones formed in kidneys.