全景断层合成：基于模拟投影几何的头颈部CBCT
Panorama Tomosynthesis from Head CBCT with Simulated Projection Geometry
AI总结：
提出一种基于模拟投影几何和动态旋转中心的新方法，从头部CBCT合成高质量全景X光片，无需金标准牙弓提取，适用于缺牙及金属植入物患者。
摘要：
锥形束计算机断层扫描（CBCT）和全景X光片是牙科医疗保健中最常用的成像方式。CBCT能够生成患者头部的三维视图，为临床医生提供更好的诊断能力，而全景X光片则能在单张图像中捕捉整个颌面区域。如果已有CBCT，合成全景X光片将是有益的，从而避免立即进行额外的扫描和额外的辐射暴露。现有方法侧重于描绘近似牙弓并沿此弓创建正交投影。然而，此类牙弓提取缺乏金标准，且这一选择可能影响合成X光片的质量。为避免此类问题，我们提出了一种新颖的方法，利用模拟投影几何和动态旋转中心，从多样化的头部CBCT中合成全景X光片。我们的方法有效地从CBCT合成了全景视图，即使对于缺牙或无牙患者以及存在严重金属植入物的情况也是如此。我们的结果表明，无论CBCT扫描仪几何形状如何，该方法都能生成高质量的全景图像。
英文摘要：
Cone Beam Computed Tomography (CBCT) and Panoramic X-rays are the most commonly used imaging modalities in dental health care. CBCT can produce three-dimensional views of a patient's head, providing clinicians with better diagnostic capability, whereas Panoramic X-ray can capture the entire maxillofacial region in a single image. If the CBCT is already available, it can be beneficial to synthesize a Panoramic X-ray, thereby avoiding an immediate additional scan and extra radiation exposure. Existing methods focus on delineating an approximate dental arch and creating orthogonal projections along this arch. However, no golden standard is available for such dental arch extractions, and this choice can affect the quality of synthesized X-rays. To avoid such issues, we propose a novel method for synthesizing Panoramic X-rays from diverse head CBCTs, employing a simulated projection geometry and dynamic rotation centers. Our method effectively synthesized panoramic views from CBCT, even for patients with missing or nonexistent teeth and in the presence of severe metal implants. Our results demonstrate that this method can generate high-quality panoramic images irrespective of the CBCT scanner geometry.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
