Too many photos?

• Position: Health - High-frequency sound waves can cause danger during ultrasounds - Brief Article

It's a rite of passage for many expectant parents: showing off fuzzy images from the first ultrasound exam. Hoping to capitalize on this trend, some companies now offer nonmedical "keepsake" ultrasounds using 3-D technology to produce near-photographic images. But the American Institute of Ultrasound in Medicine and the U.S. Food and Drug Administration oppose the practice, saying that overexposure to high-frequency sound waves could be unhealthy, and that commercial...