Saket Parvaneh, Shobeihi Shobeir, Mehrdadi Soroush
Novin Didegan Clinic, Tehran, Iran.
Shepco.BME (Shafa Electro Pejhvak Co.Ltd.), Tehran, Iran.
J Cosmet Dermatol. 2017 Sep;16(3):336-341. doi: 10.1111/jocd.12317. Epub 2017 Feb 2.
Ultrasound is a mechanical wave that transmitted in a straight line and it can be focused at frequencies of 1-7 MHz with a high degree of precision. An important aspect of HIFU is that damaging focal point is located several millimeters below the surface of the skin and tissue above and below the focal point remains unaffected. Due to absorption of this energy, temperature of tissue rises to more than 60°C and this stimulates the cells for collagen production and tissue rejuvenation.
To evaluate the clinical efficacy and safety of High-Intensity Focused Ultrasound on Skin Laxity and wrinkles.
The study involved 22 women aged 35-62 with skin type II-IV. HIFU device with three transducers was employed. Various focal depths with different energies were used in accordance with skin thickness. Improvement for seven regions of face and whole face were evaluated by two dermatologists and patients 3 months after treatment.
All of the patients completed the study. Three months after treatment, there was a highly statistical improvement in skin laxity for all of the patients. Also, the average percentage of improvement by doctor's opinion and patients was 58% and 60%, respectively.
The experimental data obtained from dermatologists and patients showed that HIFU appears to be a safe and effective modality for skin laxity treatment.
超声是一种沿直线传播的机械波，它能够在1 - 7兆赫兹的频率下高精度聚焦。高强度聚焦超声（HIFU）的一个重要特点是，损伤焦点位于皮肤表面以下几毫米处，焦点上方和下方的组织不受影响。由于这种能量的吸收，组织温度升高至60°C以上，这刺激细胞产生胶原蛋白并使组织恢复活力。
评估高强度聚焦超声治疗皮肤松弛和皱纹的临床疗效及安全性。
该研究纳入了22名年龄在35 - 62岁、皮肤类型为II - IV型的女性。使用了带有三个换能器的HIFU设备。根据皮肤厚度采用不同能量的各种聚焦深度。治疗3个月后，由两名皮肤科医生和患者对脸部七个区域及全脸的改善情况进行评估。
所有患者均完成了研究。治疗3个月后，所有患者的皮肤松弛情况均有高度统计学意义的改善。此外，医生评估和患者自评的平均改善百分比分别为58%和60%。
从皮肤科医生和患者处获得的实验数据表明，HIFU似乎是一种治疗皮肤松弛的安全有效的方法。
