ultrasonography

Medical ultrasonography (sonography) is an ultrasound-based diagnostic imaging technique used to visualize muscles and internal organs, their size, structures and possible pathologies or lesions. Obstetric sonography is commonly used during pregnancy and is widely recognized by the public. There are a plethora of diagnostic and therapeutic applications practiced in medicine.
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Ultrasonography /ul·tra·so·nog·ra·phy/ the imaging of deep structures of the body by recording the echoes of pulses of ultrasonic waves directed [more]Ultrasonography - Community and Resources

Noun
1. 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
(synonym) sonography, ultrasound
(hypernym) imaging, tomography

[UL-tra-son-OG-ra-fee]
A procedure in which high-energy sound waves (ultrasound) are bounced off internal tissues or organs and make echoes. The echo patterns are shown on the screen of an ultrasound machine, forming a picture of body tissues called a sonogram. Also called ultrasound.

the use of sound waves to examine the eye and surrounding area for analysis of tumors, retinal detachments, or cataracts.