Ultrasound (US) or sonography is the most common diagnostic non-invasive imaging method, which is estimated to account for more than a third of all diagnostic procedures used in medical practice. Traditionally, US frequencies used in diagnostic radiology range from 1 MHz to approximately 16 MHz. Visualization of skin morphology requires US frequencies from 20 to 100 MHz, and is called a “high frequency ultrasound” (HFUS). HFUS has been explored in normal skin and in various skin pathologies. It has been found useful in differentiation diagnosis of infiltrative (perivascular) and exudative inflammation, hypertrophic or normotrophic scars, keloids, and in skin atrophy. Moreover, it has been used to support diagnosis and management of skin tumors. In skin oncology, HFUS can provide essential information on tumors’ size and margins, particularly the depth of invasion. Such information are crucial in deciding on the form of treatment (e.g., photodynamic therapy, radiotherapy, brachytherapy), computed tomography (CT)-based planning treatment (e.g., superficial brachytherapy), and in skin monitoring after treatment, in addition to clinical examination.

中文翻译：

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高频皮肤超声在非黑色素瘤皮肤癌中的应用

超声 (US) 或超声检查是最常见的诊断非侵入性成像方法，估计占医疗实践中使用的所有诊断程序的三分之一以上。传统上，诊断放射学中使用的美国频率范围从 1 MHz 到大约 16 MHz。皮肤形态的可视化需要 20 到 100 MHz 的 US 频率，被称为“高频超声”（HFUS）。HFUS 已在正常皮肤和各种皮肤病状中进行了探索。已发现它可用于浸润性（血管周围）和渗出性炎症、肥厚性或正常营养性瘢痕、瘢痕疙瘩和皮肤萎缩的鉴别诊断。此外，它已被用于支持皮肤肿瘤的诊断和管理。在皮肤肿瘤学中，HFUS 可以提供有关肿瘤大小和边缘的基本信息，尤其是入侵的深度。除了临床检查之外，这些信息对于决定治疗形式（例如，光动力疗法、放疗、近距离放射治疗）、基于计算机断层扫描 (CT) 的计划治疗（例如，浅表近距离放射治疗）以及治疗后的皮肤监测至关重要.