Photodynamic Therapy Using HMME for Port-Wine Stains: Clinical Effectiveness and Sonographic Appearance

Figure 2

Changes in skin thickness and density before and after treatment with PWS in the high-frequency ultrasound skin mode. Before treatment, compared with the normal skin on the opposite side, the dilated deformed capillaries in PWS patients increased significantly, from the superficial layer of the dermis to the deep layer. After three HMME-PDT treatments, the deformed vessels in the superficial dermis of the skin lesions were significantly reduced, and a small number of star-shaped blood flow signals were seen.