Lutz H, Bauer U, Stolte M
Ultraschall Med. 1986 Dec;7(6):255-8. doi: 10.1055/s-2007-1013961.
The gastrointestinal wall can be separated into 5 layers by means of ultrasonic endoscopy and also by external ultrasound when using a probe of 5 Mhz. We studied the relationship between these echographic layers and the real anatomical structures by means of in-vitro examination of surgical specimens. The anatomical layers were separated in these specimens step by step. We found that the first and the fifth hyperechoic layers are border echos. The 2. (inner echopoor layer), the 3. (middle echogenic layer) and the 4. (outer echopoor layer) correspond to the mucosa, the submucosa and the muscularis propria, respectively. In so far, the differentiation between early cancer and advanced cancer of the stomach should be possible by endoscopic ultrasonography.
借助超声内镜，胃肠道壁可分为5层；使用5兆赫探头的体外超声检查也能做到这一点。我们通过对手术标本进行体外检查，研究了这些超声层与实际解剖结构之间的关系。在这些标本中逐步分离出解剖层。我们发现，第一和第五高回声层是边界回声。第二层（内部低回声层）、第三层（中间回声层）和第四层（外部低回声层）分别对应于黏膜、黏膜下层和固有肌层。就此而言，通过内镜超声检查应该能够区分早期胃癌和进展期胃癌。
