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2. Ultrasound - Wikipedia

   en.wikipedia.org/wiki/Ultrasound

   Ultrasound. Ultrasound is sound with frequencies greater than 20 kilohertz. [1] This frequency is the approximate upper audible limit of human hearing in healthy young adults. The physical principles of acoustic waves apply to any frequency range, including ultrasound. Ultrasonic devices operate with frequencies from 20 kHz up to several gigahertz.

3. Diagnostic medical sonography - Wikipedia

   en.wikipedia.org/wiki/Diagnostic_medical_sonography

   Significant tests. Medical sonogram. Diagnostic medical sonography (DMS), a branch of diagnostic medical imaging, is the use of imaging by medical ultrasound for medical diagnosis. DMS uses non-ionizing ultrasound to produce 2D and 3D images of the body. In Canada, the credentialing for diagnostic medical sonography is the Canadian Association ...

4. Dog whistle - Wikipedia

   en.wikipedia.org/wiki/Dog_whistle

   A dog whistle (also known as silent whistle or Galton's whistle) is a type of whistle that emits sound in the ultrasonic range, which humans cannot hear but some other animals can, including dogs and domestic cats, and is used in their training. It was invented in 1876 by Francis Galton and is mentioned in his book Inquiries into Human Faculty ...

5. Lameness (equine) - Wikipedia

   en.wikipedia.org/wiki/Lameness_(equine)

   Lameness (equine) Lameness is an abnormal gait or stance of an animal that is the result of dysfunction of the locomotor system. In the horse, it is most commonly caused by pain, but can be due to neurologic or mechanical dysfunction. Lameness is a common veterinary problem in racehorses, sport horses, and pleasure horses.

6. Acoustical engineering - Wikipedia

   en.wikipedia.org/wiki/Acoustical_engineering

   Acoustical engineering (also known as acoustic engineering) is the branch of engineering dealing with sound and vibration. It includes the application of acoustics, the science of sound and vibration, in technology. Acoustical engineers are typically concerned with the design, analysis and control of sound. One goal of acoustical engineering ...

7. Sound from ultrasound - Wikipedia

   en.wikipedia.org/wiki/Sound_from_ultrasound

   Sound from ultrasound. Sound from ultrasound is the name given here to the generation of audible sound from modulated ultrasound without using an active receiver. This happens when the modulated ultrasound passes through a nonlinear medium which acts, intentionally or unintentionally, as a demodulator.

8. Sonographer - Wikipedia

   en.wikipedia.org/wiki/Sonographer

   A sonographer is an allied healthcare professional who specializes in the use of ultrasonic imaging devices to produce diagnostic images, scans, videos or three-dimensional volumes of anatomy and diagnostic data. The requirements for clinical practice vary greatly by country. Sonography requires specialized education and skills to acquire ...

9. Phased array ultrasonics - Wikipedia

   en.wikipedia.org/wiki/Phased_array_ultrasonics

   Phased array ultrasonics (PA) is an advanced method of ultrasonic testing that has applications in medical imaging and industrial nondestructive testing. Common applications are to noninvasively examine the heart or to find flaws in manufactured materials such as welds. Single-element (non- phased array) probes, known technically as monolithic ...