MODEL RELEASED. Doppler ultrasound. Doctor holding an ultrasound transducer next to a patient's abdomen to study her organs. Doppler ultrasound builds up pictures of body structures from the echoes of high frequency sound waves produced by the transducer. The doppler effect,in which a wave reflected from a moving body has its wavelength shifted,allows determination of the speed and smoothness of blood flow and other movements. Ultrasound is good for imaging hollow and fluid-filled structures. This scan (upper centre) is normal | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Aj Photo / Hop Americain |
Taille de l’image : | 3630 px × 2404 px |
Model Release : | Disponible |
Property Release : | Non requis |
Restrictions : | - |