![]() Anatomical ultrasound produces images of internal organs or other structures. ![]() In addition, ultrasound is sometimes used during surgery by placing a sterile probe into the area being operated on.ĭiagnostic ultrasound can be further sub-divided into anatomical and functional ultrasound. However, to optimize image quality, probes may be placed inside the body via the gastrointestinal tract, vagina, or blood vessels. Most diagnostic ultrasound probes are placed on the skin. Ultrasound probes, called transducers, produce sound waves that have frequencies above the threshold of human hearing (above 20KHz), but most transducers in current use operate at much higher frequencies (in the megahertz (MHz) range). Diagnostic ultrasound is a non-invasive diagnostic technique used to image inside the body. ![]()
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