Yoshida H, Akizuki H, Michi K
First Dept. of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan.
J Craniomaxillofac Surg. 1987 Dec;15(6):306-11. doi: 10.1016/s1010-5182(87)80076-8.
Since ultrasonographic examination has the advantages of being non-invasive, rapid and easily reproducible, this technique can be a valuable aid in diagnosing oral lesions. However, the relatively large size of commercially available transducers and the acoustic attenuation by the air space within the oral cavity have been deterrents to the intraoral application of this technique. To resolve these problems a small intraoral transducer was developed and employed clinically in the diagnosis of oral soft tissue lesions. Performance tests reveal that this transducer provides 1mm axial resolution and 2 mm lateral resolution with a 30 mm focus. It can be easily employed within the oral cavity, using a small water bag or polymer gel as an acoustic coupling agent to the oral mucosa. Clinical application of this technique to oral soft tissue lesions allows definition of margins, size and location of lesions, and their relationship to adjacent structures, as well as discrimination between cystic, benign or malignant nature, by the sonic character. These results suggest that intraoral ultrasonic scanning can be useful in the diagnosis of oral soft tissue lesions.
由于超声检查具有无创、快速且易于重复的优点，该技术在口腔病变的诊断中可成为一项有价值的辅助手段。然而，市售换能器相对较大的尺寸以及口腔内空气间隙造成的声衰减一直是阻碍该技术在口腔内应用的因素。为解决这些问题，研发了一种小型口腔内换能器并将其临床应用于口腔软组织病变的诊断。性能测试表明，该换能器在30mm的焦距下提供1mm的轴向分辨率和2mm的横向分辨率。使用小水袋或聚合物凝胶作为与口腔黏膜的声耦合剂，它可轻松用于口腔内。将该技术临床应用于口腔软组织病变，通过声音特征可明确病变的边界、大小和位置，以及它们与相邻结构的关系，还能区分囊肿、良性或恶性性质。这些结果表明，口腔内超声扫描在口腔软组织病变的诊断中可能有用。
