Adipose tissue for stem cells is usually taken from fat in the back portion of your “love handles”. This provides a very safe area unlike the abdomen that could be perforated.
There are 2 layers of fat- superficial or just below the skin and a deep layer below that. The deep fat provides much better stem cells, but can be difficult to know what layer the trochar is in by feel alone. Ultrasound guidance ensures that the deep layer is being harvested providing the best stem cell for treatment.