利用CT和MRI融合技术确定咀嚼肌三维肌力向量

THREE-DIMENSIONAL MASTICATORY MUSCLE FORCE VECTORS DETERMINED BY CT AND MRI FUSION IMAGE TECHNOLOGY

采用基于小波金字塔分解的方法对颅颌面CT MRI医学图像进行融合 ,再经可视化技术处理 ,以测量和分析颅颌面部各咀嚼肌的三维肌力向量。结果显示 :咀嚼肌系统在功能状态下具有不同大小的生理横截面积和最大肌力 ,不同咀嚼肌以及同一咀嚼肌的不同侧别其肌力的空间方向亦各不相同。提示借助于颅颌面CT MRI医学图像融合技术获得咀嚼肌的三维肌力向量是可行的 。

In order to measure and analyze three dimensional masticatory muscle force vectors in craniofacial region, the multiresolution method based on wavelet pyramid was used for the fusion of cranio jaw facial CT and MRI image, then these images were visualized. The results showed that the area of physiological cross section (PCS) and the maximum muscle force were different during functioning in the masticatory muscles system. The various masticatory muscle forces or various sides in the same muscle were also different in the three dimensional directions. The results suggested that determination of three dimensional masticatory muscle vectors is feasible by CT and MRI fusion image technology in craniofacial region, and can provide significant results for the basic research in the masticatory muscle system.