About smart lipo/cavitation and radiation absorption. Is it safe?

If you're paranoid about the effects of radiation on cancer, don't use a cell phone, don't live near power lines and don't use your microwave. If you want to look good with lipo, look for an experienced surgeon with plenty of before and after photos and excellent reviews. Excellent results equivalent and superior to anything that can be achieved with lasers or ultrasound can be routinely achieved with standard lipo techniques.

I suggest you pick a surgeon based on their results, reviews, and philosophy.  The types of devices do not matter as much as the person performing the procedure.  I have 5 devices that I use and often it is 2-3 per persons procedure to ensure even better results than one alone.  It all depends on your individual case and goals, to what devices should be used.  See someone who is a specialist and performs this type of procedure frequently.  Best, Dr. Emer.