A phantom study regarding the formation mechanism of mucosal epithelial echo on intraoral ultrasonography
A phantom study regarding the formation mechanism of mucosal epithelial echo on intraoral ultrasonography
复制标题
口腔内超声粘膜上皮回声形成机制的模型研究
DOI：
10.1002/osi2.1129
复制
发表时间：
2022
影响因子：
0.5
通讯作者：
Katsura Kouji
中科院分区：
文献类型：
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作者：
Kobayashi Taichi;Hayashi Takafumi;Takamura Masaki;Soga Marie;Nikkuni Yutaka;Katsura Kouji
目的本研究利用体模模拟口腔内超声成像，探讨口腔黏膜上皮回声的形成机制。方法本研究采用体模、厚度分别为0.5、1.0、3.0mm的模拟黏膜层（SML）和无SML的模拟黏膜层（SML），以及术中使用的小型线阵探头作为超声换能器。声耦合材料采用声耦合聚合物凝胶和琼脂凝胶，外包装材料采用聚偏二氯乙烯（PVDC）、聚乙烯（PE）和聚甲基戊烯（PMP）。在B-模式images.ResultsA表面回声约0.5 mm厚和一个高回声线结构约1.0 mm深的3.0 mm的SML，这被认为是伪影的厚度进行了测量与所有的组合声耦合材料和塑料包装，除了与声耦合琼脂凝胶和PMP包装可视化。当使用声耦合聚合物凝胶时，即使不存在SML，也观察到约0.2 mm厚的低回声线。厚度的SML似乎是小于其实际深度的超声图像，最准确的测量厚度，获得使用声耦合琼脂凝胶连同PMP wrap.ConclusionWhen使用声耦合聚合物凝胶，文物可能会阻止准确的可视化超过一个区域，大约是0.6-0.7 mm厚。这表明，当通过该方法进行口内超声时，可能无法准确地观察粘膜上皮。
ObjectivesThis study is aimed to perform imaging of phantoms to simulate intraoral ultrasound and to investigate the formation mechanism of mucosal epithelial echo.MethodsIn this study, we used phantoms, simulated mucosal layer (SML) with thickness of 0.5, 1.0, 3.0 mm and no SML, and an intraoperative small linear probe as ultrasound transducer. Acoustic coupling polymer gel and agar gel were used as the coupling material, and polyvinylidene chloride (PVDC), polyethylene (PE) and polymethylpentene (PMP) plastic wrap were used. The thicknesses of a surface echo and mucosal epithelial echo were measured on B‐mode images.ResultsA surface echo approximately 0.5 mm thick and a hyperechoic line structure approximately 1.0 mm deep in the 3.0‐mm SML, which were presumed to be artifacts, were visualized with all combinations of acoustic coupling material and plastic wrap except with acoustic coupling agar gel and PMP wrap. When using acoustic coupling polymer gel, a hypoechoic line approximately 0.2 mm thick was observed, even when no SML was present. Thickness of the SML appeared to be lesser on ultrasound images than its actual depth, and the most accurate measurement of thickness was obtained using acoustic coupling agar gel together with PMP wrap.ConclusionWhen using acoustic coupling polymer gel, artifacts may have prevented accurate visualization over an area that is approximately 0.6–0.7 mm thick. This shows that when intraoral ultrasound is performed by this method, it may not be possible to accurately visualize the mucosal epithelium.