An ultrasound scanner uses sound waves that are sent out in a high frequency that reflect off the structure of a body to create an image. Images produced by an ultrasound machine can be two-dimensional, three-dimensional or four-dimensional. Ultrasound is used for imaging in cardiac, obstetric and many other diagnostic areas. Most ultrasound scanners are used to examine organs. However ultrasound can also be used for therapeutic purposes as well, such as to improve circulation, to treat pain and strains, and to enhance the body's own natural healing process
Instructions
1. Think about what the scanner will be used for. Consider the basics of any ultrasound scanner, such as the frequencies that will be used, the power source, requirements, power output, the size and weight, and the life of the battery beforehand. Consider how the scanner will be used; for therapeutic purposes or diagnostic imaging. Therapeutic ultrasound uses less intense sound waves to create images; diagnostic ultrasound uses much higher energies to create images.
2. Note the scanner's image quality. The creation of an image from a sound wave is done in three steps--the sound wave is produced, the echoes are received and the echoes are interpreted. Therefore, deciding what modes will be used is dependent on what the scanner will be used for. For diagnostic imaging, the clarity of the image is determined by the power, frequency and amplitude and the time that it requires for the sound signal to return from the individual to the transducer. Generally, a lower frequency produces poorer resolution but can reach further into the body.
3. Decide on a budget. The prices on ultrasound scanners vary greatly from low-end models, which start at approximately $5,000, to upward of $200,000. Having a budget can help narrow the choices down so you can determine what fits in your price range.
4. Determine if you want a new or used model. Ultrasound scanners are complicated, so when purchasing a new or used ultrasound scanner, it's important to take into consideration maintenance, repair and what the warranty covers. New ultrasound scanners usually come with a 1-year service agreement, but some offer as much as a 3- to 5-year service agreement that is added onto the price. As with anything else, a pre-owned ultrasound scanner can save money, so it's best to choose wisely.
With a pre-owned ultrasound scanner, there are some non-OEM (non-original equipment manufacturer) organizations that offer service agreements that can be purchased. So before you agree to buy new or used, it's best to make sure you know exactly what the warranty/service agreements cover.
5. Choose either a stationary or mobile model. Choosing whether to purchase a portable or stationary ultrasound depends greatly on how you intend to use the machine and the space you have available. Portable can be beneficial if you use it in several facilities, but its use has some drawbacks. Generally, only one transducer can be used at any one time, the keyboard is small, and since many of the keys on the keyboard serve several functions it can deter from the ease of use.
6. Consider what mode you want. A-mode is the simplest type of ultrasound. It is used for imaging and therapeutic purposes. B-mode is the most commonly used ultrasound and costs about $50,000. M-Mode has been used to study the heart. Doppler mode is widely used to detect defects of the heart, hypertension and arteriosclerosis. Doppler machines cost about $250,000.
7. Look for vendors who provide training. Unless you are very familiar with the aspects of the equipment you will be using, proper training is essential. A good vendor will offer support, a review of the features and training upon delivery.So be sure and inquire with the vendor what is included with the purchase with regard to training.
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