Gen Dent. 2023 Jul-Aug;71(4):64-71.
Cone beam computed tomography (CBCT) provides a 3-dimensional (3D) view of the patient and has a high frequency of incidental findings (IFs) that do not relate to the area of interest. Many of these IFs are not always visible on 2-dimensional (2D) intraoral or panoramic radiographs. Thus, the aim of the present study was to assess the IFs that did or did not appear on 3D vs 2D images. Significant IFs were recorded from a review of 510 CBCT reports by board-certified oral and maxillofacial radiologists. The IFs on CBCTs with 5-, 8-, and 11-cm fields of view (n = 170 per group) were recorded. A subset of these significant IFs was also viewed on intra-oral and panoramic radiographs to determine whether they were or were not visible in 2D imaging. A total of 677 significant IFs were discovered on 302 (59.2%) of the 510 reports. When a subset of 293 IFs was reviewed on intraoral and panoramic imaging, 112 (38.2%) were not visible on 2D radiographs, while 50 (17.1%) could not be confirmed with certainty. The frequency of significant IFs on CBCT imaging is high and increases with larger fields of view. A substantial number of these findings could not be seen on 2D radiographs, implying that many IFs are visible only on 3D images. Clinicians who order CBCT scans need to carefully review the volume in its entirety, regardless of previous imaging, so as not to miss any significant and relevant findings.
锥形束计算机断层扫描（CBCT）提供了患者的三维（3D）视图，具有很高的偶然发现（IF）频率，这些发现与感兴趣的区域无关。这些 IF 中的许多在二维（2D）口腔内或全景放射片中并不总是可见。因此，本研究旨在评估 3D 与 2D 图像上是否存在 IF。从 510 名经董事会认证的口腔颌面放射科医生审查的 CBCT 报告中记录了显著的 IF。记录了具有 5、8 和 11cm 视野的 CBCT 上的 IF（每组 170 个）。这些显著 IF 的一部分也在口腔内和全景放射片中查看，以确定它们在 2D 成像中是否可见。在 510 份报告中的 302 份（59.2%）上发现了总共 677 个显著 IF。当对 293 个 IF 的子集进行口腔内和全景成像检查时，112 个（38.2%）在 2D 放射片中不可见，而 50 个（17.1%）无法肯定地确认。CBCT 成像上显著 IF 的频率很高，并且随着视野的增大而增加。这些发现中有相当一部分在 2D 放射片中不可见，这意味着许多 IF 仅在 3D 图像上可见。订购 CBCT 扫描的临床医生需要仔细检查整个容积，无论之前是否有过成像，以避免错过任何重要和相关的发现。
