Medical Ultrasonography
Diagnostic sonography (ultrasonography) is an ultrasound-based diagnostic imaging technique used for visualizing subcutaneous body structures including tendons, muscles, joints, vessels and internal organs for possible pathology or lesions. Obstetric sonography is commonly used during pregnancy and is widely recognized by the public.
In physics, the term "ultrasound" applies to all sound waves with a frequency above the audible range of normal human hearing, about 20 kHz. The frequencies used in diagnostic ultrasound are typically between 2 and 18 MHz.
Read more about Medical Ultrasonography: Diagnostic Applications, Therapeutic Applications, From Sound To Image, Sound in The Body, Modes of Sonography, Expansions, Attributes, Risks and Side-effects, Obstetric Ultrasound, Regulation
Famous quotes containing the word medical:
“Every day our garments become more assimilated to ourselves, receiving the impress of the wearer’s character, until we hesitate to lay them aside without such delay and medical appliances and some such solemnity even as our bodies.”
—Henry David Thoreau (1817–1862)