Brooks John K, Price Jeffery B, Jones Joyce L
Gen Dent. 2020 Nov-Dec;68(6):18-22.
Panoramic radiography is a useful screening tool for an array of dental and nonodontogenic disorders related to calcification as well as assessment of trauma and development of the oral and maxillofacial complex. Rotational movements of the radiographic source and detector plate may promote ghost image formation, particularly with larger radiopaque objects, and complicate the radiographic interpretation. This article describes cases of a giant submandibular gland sialolith and a giant tonsillolith, each of which appeared as a bilateral presentation due to contralateral ghost images, and discusses their clinical, demographic, and radiographic characteristics. Computed tomographic examinations were used to confirm the unilateral presentation of these objects and for determination of the extent of adjacent soft tissue impingement. Distinguishing an actual panoramic image from a ghost artifact may avoid unnecessary surgical intervention and improve clinical outcomes.
全景放射摄影是一种有用的筛查工具，可用于检测一系列与钙化相关的牙科和非牙源性疾病，以及评估口腔颌面部复合体的创伤和发育情况。放射源和探测器板的旋转运动可能会促进伪影的形成，尤其是对于较大的不透射线物体，这会使放射影像的解读变得复杂。本文描述了一例巨大的下颌下腺涎石和一例巨大的扁桃体结石病例，由于对侧伪影，二者均表现为双侧影像，并讨论了它们的临床、人口统计学和放射影像学特征。使用计算机断层扫描检查来确认这些物体的单侧表现，并确定相邻软组织受压迫的程度。将实际的全景图像与伪影区分开来可以避免不必要的手术干预并改善临床结果。
