Artifacts in ultrasound are more of a nuisance and can contribute to misleading diagnostic information. Artifacts can be attributed to a hardware problem such as holding the transducer incorrectly or be related to the imaging technique and software such as B-Mode or Doppler. However, scientists at the National Space Biomedical Research Institute (NSBRI) are developing an ultrasound technology that uses "Twinkling Artifact" to detect and push through kidney stones.
United Medical Instruments - Diagnostic Ultrasound Blog!
Portable ultrasound machines are available from every manufacturer and range in price from $10,000-$75,000 depending on features and technology. Depending on one's clinical needs it certainly seems to make sense to buy one either for your private practice or to start a mobile sonography business. In the last month of 2012, and with Section 179 Tax Deduction available, it even makes more sense to take advantage of the cost savings.