Sa-Ing Vera, Wangkaoom Kongyot, Thongvigitmanee Saowapak S
Annu Int Conf IEEE Eng Med Biol Soc. 2013;2013:6099-102. doi: 10.1109/EMBC.2013.6610944.
Due to accurate 3D information, computed tomography (CT), especially cone-beam CT or dental CT, has been widely used for diagnosis and treatment planning in dentistry. Axial images acquired from both medical and dental CT scanners can generate synthetic panoramic images similar to typical 2D panoramic radiographs. However, the conventional way to reconstruct the simulated panoramic images is to manually draw the dental arch on axial images. In this paper, we propose a new fast algorithm for automatic detection of the dental arch. Once the dental arch is computed, a series of synthetic panoramic images as well as a ray-sum panoramic image can be automatically generated. We have tested the proposed algorithm on 120 CT axial images and all of them can provide the decent estimate of the dental arch. The results show that our proposed algorithm can mostly detect the correct dental arch.
由于具有精确的三维信息，计算机断层扫描（CT），尤其是锥形束CT或牙科CT，已广泛应用于牙科的诊断和治疗计划。从医学和牙科CT扫描仪获取的轴向图像可以生成类似于典型二维全景X线片的合成全景图像。然而，重建模拟全景图像的传统方法是在轴向图像上手动绘制牙弓。在本文中，我们提出了一种用于自动检测牙弓的新的快速算法。一旦计算出牙弓，就可以自动生成一系列合成全景图像以及射线求和全景图像。我们在120张CT轴向图像上测试了所提出的算法，所有这些图像都能提供对牙弓的良好估计。结果表明，我们提出的算法大多能检测到正确的牙弓。
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