Ultrasound
| What it's not: |
An extreme car stereo
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| What it is: |
Ultrasound is a technology that uses sound waves to create a picture. An ultrasound technician (sonographer) uses a hand-held wand (transducer) to direct sound waves at the internal body part of interest. The reflection or return of these waves creates a black/white image. Fluid appears black, solid material like bone appears white and other tissues, like most organs, appear as shades of grey. |
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