- #1
chirhone
- 300
- 25
Is ultrasound focus just like light rays where the intensity is strongest in the focus? How much is the exposure when the tissue has only a partial ultrasound beam passing (like cross section, imagine 1/4 of beam sides) through it. For example. The focus of the ultrasound is deep in the kidney at center. But the sides of the kidney is still exposed to part of the ultrasound beam. What intensity is it in comparison to the focus?