noun. using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs.
1. Noun, singular or mass X-rays or ultrasonography may be used to determine the size and shape of the kidneys. 2. Adjective Non-invasive procedures include ultrasonography, MRI (magnetic resonance imaging) and CAT scan (computed axial tomography).
