No. Diagnostic Ultrasound is regarded as a safe imaging modality and does not produce ionizing radiation like that produced by x-rays. Ultrasound (sonography) imaging uses high-frequency sound waves to view inside the body. Ultrasound images are created based on the reflection of sound waves off the body structures. The strength of the sound signal and the time it takes for the wave to travel through the body provides the information necessary to produce an image.