Berson M, Vaillant L, Patat F, Pourcelot L
Unité INSERM 316, GIP Ultrasons, Laboratoire de Biophysique Médicale, Faculté de Médecine, Tours, France.
Ultrasound Med Biol. 1992;18(5):471-8. doi: 10.1016/0301-5629(92)90087-q.
High spatial resolution is required for echographic exploration of the skin, microvessels or small laboratory animals. With the scanner described here, high resolution is obtained by means of a strongly focused, wide-band 17 MHz center frequency transducer (-6 dB bandwidth: 22 MHz). The movement of this transducer above the skin provides a 6 mm wide and 5 mm deep echographic cross-section with an image rate of 15 images/s. The resolution is about 0.08 mm in axial and 0.2 to 0.3 mm in lateral directions. The device was tested on phantoms in water and in vivo on normal and pathological skin in the Department of Dermatology. With the easy-to-handle probe, explorations were made on psoriasis, basocellular carcinoma, malignant melanoma and sarcoidosis.
皮肤、微血管或小型实验动物的超声检查需要高空间分辨率。使用此处描述的扫描仪，通过一个强聚焦、中心频率为17MHz的宽带换能器（-6dB带宽：22MHz）可获得高分辨率。该换能器在皮肤上方的移动可提供一个宽6mm、深5mm的超声横截面，图像帧率为15帧/秒。轴向分辨率约为0.08mm，横向分辨率为0.2至0.3mm。该设备在水中的体模上以及在皮肤科对正常和病理皮肤进行了体内测试。使用易于操作的探头，对银屑病、基底细胞癌、恶性黑色素瘤和结节病进行了检查。
