: Differentiates solid tumors from fluid-filled cysts (anechoic) or fatty lipomas (often oval and hypoechoic). 2. Inflammatory Diseases
: Standard dermatologic exams require probes of at least 15 MHz ; ultra-high frequency (UHFUS) can reach up to 70 MHz for viewing minute structures like hair tracts. Layer Echogenicity : Epidermis : Appears as a bright, hyperechoic line. Atlas of Dermatologic Ultrasound
: Characterized by thickening of the epidermis and a "subepidermal low-echogenic band" (SLEB) representing inflammation. 3. Cosmetic & Aesthetic Procedures Layer Echogenicity : Epidermis : Appears as a
: Ultrasound helps measure the depth (ultrasonographic Breslow index) and check for nearby satellite metastases. Cosmetic & Aesthetic Procedures : Ultrasound helps measure
: Vital for assessing blood flow in tumors, inflammation, and vascular malformations. 🏥 Clinical Applications
: Also hyperechoic but slightly less so than the epidermis due to collagen content.
: Typically seen as hypoechoic (dark) lesions with irregular borders.