Table 1.

Comparison of technologies for fat reduction

Technology	Mechanism of action	Pain level	Side effects	Treatments needed (n)
High-intensity focused ultrasound	Necrosis	High	Massive bruising and tenderness up to 2 weeks	1–2
Unipolar radiofrequency	Apoptosis	Medium	Redness and tenderness for 1–3 days	2–3
Low-level laser therapy	Apoptosis	None	None	6
Acoustic wave therapy	Apoptosis	None	None	8
Cryolipolysis	Apoptosis	Low	Numbness and bruising for up to 7 days	1–2