Ultrasound technology sends high frequency sound waves that are reflected off of internal body structures. A computer receives and analyzes these waves producing images that can be seen on a screen. It is important to point out that these examinations are not expositions to x-rays.
The ultrasound was introduced in the 1930's. This technology is used to check the health of people by scanning in any region of the body.
Here are some advices so that you or someone you know can prepare to take an ultrasound: try to wear comfortable and loose clothes, two hours before the exam drink six glasses of water, don't urinate before the exam, most of the time your bladder must be full by the time the scan starts.
If you have never taken an ultrasound before, here is a peak into what you can exspect. During the exam there is an examination table, you have to first lay down. Next the doctor will ask you a few questions about your health and you will have to loose your clothes depending of the area that will be examined. Then the doctor applies a thick, cold gel over your skin so that a clear image will be obtained. Then the doctor will firmly press what is called a transducer against the skin while sweeping the areas that need to be examined.
The ultrasound has advantages like being inexpensive in comparison to other imaging exams, it doesn't cut skin, the discomfort is minimal, and it is performed easily allowing the image to be viewed instantly.