Stafne骨腔的影像学特征分析与CBCT诊断价值

doi:10.12439/kqhm.1005-4979.2026.05.007

摘要/Abstract

摘要：

目的：

回顾性分析Stafne骨腔（Stafne bone cavity，SBC）的影像学特征，为临床诊疗方案的制定提供参考依据。

方法：

回顾性分析22例SBC患者的影像学资料，其中14例接受全景片检查，19例接受锥形束CT（cone beam CT，CBCT）检查。将19例CBCT影像数据以医学数字成像和通信（digital imaging and communications in medicine，DICOM）格式导入Mimics Medical 21.0软件进行三维重建并测量病灶体积。

结果：

14例全景片中有12例（85.71%）可辨识SBC，有2例未能辨识（14.29%）；19例CBCT图像均能辨识SBC（100%）。19例SBC均位于下颌神经管和下颌骨下缘之间，其中16例（84.21%）SBC未接触下颌骨下缘，3例（15.79%）SBC接触下颌骨下缘；9例（47.37%）未接触下颌神经管，6例（31.58%）接触下颌神经管且管壁完整，4例（21.05%）接触下颌神经管并导致管壁不完整。根据Friedrich分型标准，0型2例（10.53%），Ⅰ型10例（52.63%），Ⅱ型6例（31.58%），Ⅲ型1例（5.26%）。19例SBC体积为62.58~3 189.31 mm³，平均体积为582.74 mm³。

结论：

影像学检查是SBC诊断的核心依据，相较于全景片对下颌骨颊舌向显示能力的局限性，CBCT在病灶三维定位、神经管关系评估及体积定量分析方面具有明显优势，建议将小视野CBCT作为重要的随访观察手段。

关键词: Stafne骨腔, 锥形束CT, 全景片

Abstract:

Objective:

To investigate the imaging characteristics of Stafne bone cavity (SBC) through retrospective case analysis and to provide a reference for clinical diagnosis and treatment.

Methods:

Imaging data from 22 patients with SBC were retrospectively analyzed. Fourteen patients underwent panoramic radiography and 19 underwent cone beam CT (CBCT). Imaging data in digital imaging and communications in medicine (DICOM) format from the CBCT scans were imported into Mimics Medical 21.0 software for three-dimensional reconstruction and volumetric measurement of the lesions.

Results:

SBC was identified in 12 of 14 panoramic radiographs (85.71%), whereas all 19 CBCT scans successfully demonstrated the lesion (100%). All 19 SBCs were located between the mandibular canal and the inferior border of the mandible. A total of 16 lesions (84.21%) did not contact the inferior border of the mandible, whereas 3 lesions (15.79%) were in contact with it. Regarding the relationship with the mandibular canal, 9 lesions (47.37%) showed no contact, 6 lesions (31.58%) contacted the canal with an intact canal wall, and 4 lesions (21.05%) contacted the canal and caused discontinuity of the canal wall. According to the Friedrich classification, 2 lesions (10.53%) were classified as type 0, 10 (52.63%) as typeⅠ, 6 (31.58%) as typeⅡ, and 1 (5.26%) as typeⅢ. The lesion volume ranged from 62.58 to 3 189.31 mm³, with a mean volume of 582.74 mm³.

Conclusion:

Imaging examination is pivotal for SBC diagnosis. Compared to panoramic radiography, which has limitations in bucco-lingual visualization, CBCT offers clear advantages in three-dimensional localization, neurovascular relationship assessment, and quantitative volumetric analysis. Small-field-of-view CBCT is recommended as an important follow-up modality for SBC monitoring.

Key words: Stafne bone cavity, cone beam CT, panoramic radiography

中图分类号:

R782

杨雨欢, 张利, 李生娇, 施雄. Stafne骨腔的影像学特征分析与CBCT诊断价值[J]. 《口腔颌面外科杂志》, 2026, 36(5): 410-415.

YANG Yuhuan, ZHANG Li, LI Shengjiao, SHI Xiong. Imaging features analysis and diagnostic value of CBCT in Stafne bone cavity[J]. Journal of Oral and Maxillofacial Surgery(CN), 2026, 36(5): 410-415.

https://journal06.magtech.org.cn/Jweb_joms/CN/Y2026/V36/I5/410

图/表 6

图1 Mimics软件测量CBCT中SBC体积的过程图 A.新建蒙版，在轴状位图像上逐层勾画SBC边界，如图红色区域所示；B.在冠状位图像上检查SBC分割范围的完整性，其边界如图红色区域所示；C.对相邻层面间未分割区域进行插值填充，绿色区域示填充后的SBC蒙版；D.对分割后的SBC模型进行平滑处理，绿色区域示平滑处理后的SBC蒙版；E—G.绿色区域分别示平滑处理后的SBC在矢状位、冠状位和轴状位的表现；H.绿色模型示SBC三维重建结果。

Figure 1 Schematic diagram of the SBC volume measurement process in CBCT using the software Mimics

图2 全景片未能清晰显示SBC 红色箭头示SBC所在区域，病灶与舌骨影像重叠。

Figure 2 The panoramic radiograph showing poor visualization of SBC

图3 SBC在全景片中表现为圆形或卵圆形透射影红色箭头示患者的SBC位于下颌骨双侧。

Figure 3 The SBC appears as a round or oval radiolucency on panoramic radiographs

图4 全景片中SBC与下颌神经管之间的关系不清晰箭头示SBC病灶。

Figure 4 The relationship between the SBC and the mandibular canal is indistinct on panoramic radiography

图5 SBC腔体在下颌骨颊舌向的深度 A.Ⅰ型：腔体深度累及舌侧骨皮质和骨松质；B.Ⅱ型：腔体深达颊侧骨皮质但不引起膨胀。箭头示SBC病灶。

Figure 5 Buccolingual depth of SBC cavities in the mandible

图6 SBC与下颌神经管之间的关系 A. SBC位于下颌神经管的下方且不接触；B. SBC接触下颌神经管且管壁完整；C. SBC接触下颌神经管并导致管壁不完整。图中红色虚线示下颌神经管。

Figure 6 Relationship between the SBC and the mandibular canal

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