2011 年 20 巻 1 号 p. 39-46
Background and Aims: Near-infrared laser-assisted lipolysis has claimed attention recently as a fast, safe and effective way to remove unwanted fat from various areas of the body. Removal of fat from the face has however proved more difficult. A novel 1444 nm line of the micropulsed Nd:YAG has recently been developed, offering superior duality of absorption in both fat and water. The present preliminary study was designed to assess the efficacy of the 1444 nm wavelength in facial and body contouring.
Subjects and Methods: Twenty-four informed and consenting female patients (ages ranging from 23 yr to 59 yr, mean age 32.38 ± 7.26 yrs) were recruited into the study. The laser used was a micropulsed 1444 nm Nd:YAG system. Following tumescent anesthesia, the tip of the optical fiber was placed in the subcutaneous fat via a cannula inserted through a small puncture wound, and lasing was commenced while the tissue over the end of the optical fiber was continuously palpated to check for excessive heat formation. Cold compresses were applied post-lasing. Patients were followed for at least 2 months with clinical photography at baseline, immediately post-treatment and at subsequent assessment points.
Results: All patients successfully completed the study. Patient subjective satisfaction was high, and an objective clinician assessment from the clinical photography showed good efficacy. There were no major adverse side effects. Minor side effects were transitory, all resolved spontaneously and good results were maintained during a 2 - 3-month follow-up.
Conclusions: The present study showed high efficacy for the 100 μ.s micropulsed Nd:YAG laser at 1444 nm for laser-assisted lipolysis of both body and facial areas, with no adverse side effects and virtually no downtime. The high absorption rate of 1444 nm in both fat and water, coupled with the 100 μ.s pulse, was believed to contribute highly to the success of the study and the satisfaction of the patients. Further larger studies are warranted.
