Effectiveness and Long-Acting of the Hyaluronic Acid Injected into the Nasolabial Fold Measured Through Magnetic Resonance Imaging

MRI analyzed quantitatively the HA injected into the NLF subcutaneous fat to correlate the gel diffusion and degradation with the morphological changes of the NLF appearance for twelve months. Measurements of the gel diffusion and degradation were taken by MRI as parameters to assess the clinical efficacy and long-acting of the HA in NLF rejuvenation. HA was applied into the superficial compartment of the subcutaneous fat of twenty NLFs. Each...