PDF(Pubmed)
Abstract：
OBJECTIVE: This study aims to assess the anatomical possibilities of the jugular bulb (JB).
METHODS: Fifty archived CBCT scans were analyzed.
RESULTS: The average distance between the internal acoustic canal (IAC) and the JB was 7.97 mm on both sides (Right: SD = 2.56 mm, range 3.16-13.3 mm; Left: SD = 2.5 mm, range 2.9-13.6 mm). JB walls\' pneumatization was classified into eight patterns. Deep petrosal cells (DPCs) prevailed in the lateral wall of the JB. The absence of pneumatization (NP) was commonly found on the left side. The presence of infralabyrinthine and hypotympanic cells varied. Less common types included accessory occipital cells (AOCs), posteromedial tracts (PMTs), and basi-occipital cells (BOCs), which determined a consistent variation of the lateral wall pneumatization patterns. Pneumatization of the medial wall was not observed in 50 right sides and 49 left sides. The inferior wall analysis revealed symmetry in AOC distribution and a predominant occurrence of NP. Cases with hypotympanum (HT) in the lateral wall showed a statistically significant IAC-JB distance increase by an average of 4.67 mm compared to NPs. Specific pneumatizations, particularly HT on the lateral side, have a significant effect on the IAC-JB distance, showing a clear pattern of increasing distance from DPC to NP and then to HT. A significant distance increase in HT pneumatization was noted. There were also recorded instances of JB hypoplasia and hyperplasia, JB diverticula, dehiscent JBs, and high JBs.
CONCLUSIONS: This study establishes a novel classification of JB pneumatizations to aid in the understanding of the temporal bone anatomy.
METHODS: Fifty archived CBCT scans were analyzed.
RESULTS: The average distance between the internal acoustic canal (IAC) and the JB was 7.97 mm on both sides (Right: SD = 2.56 mm, range 3.16-13.3 mm; Left: SD = 2.5 mm, range 2.9-13.6 mm). JB walls\' pneumatization was classified into eight patterns. Deep petrosal cells (DPCs) prevailed in the lateral wall of the JB. The absence of pneumatization (NP) was commonly found on the left side. The presence of infralabyrinthine and hypotympanic cells varied. Less common types included accessory occipital cells (AOCs), posteromedial tracts (PMTs), and basi-occipital cells (BOCs), which determined a consistent variation of the lateral wall pneumatization patterns. Pneumatization of the medial wall was not observed in 50 right sides and 49 left sides. The inferior wall analysis revealed symmetry in AOC distribution and a predominant occurrence of NP. Cases with hypotympanum (HT) in the lateral wall showed a statistically significant IAC-JB distance increase by an average of 4.67 mm compared to NPs. Specific pneumatizations, particularly HT on the lateral side, have a significant effect on the IAC-JB distance, showing a clear pattern of increasing distance from DPC to NP and then to HT. A significant distance increase in HT pneumatization was noted. There were also recorded instances of JB hypoplasia and hyperplasia, JB diverticula, dehiscent JBs, and high JBs.
CONCLUSIONS: This study establishes a novel classification of JB pneumatizations to aid in the understanding of the temporal bone anatomy.
摘要：
目的：本研究旨在评估颈静脉球（JB）的解剖学可能性。
方法：分析了50次存档的CBCT扫描。
结果：内部声管（IAC）与JB之间的平均距离两侧为7.97mm（右：SD=2.56mm，范围3.16-13.3mm；左侧：SD=2.5mm，范围2.9-13.6毫米）。JB墙的气动被分为八种模式。深岩细胞（DPC）普遍存在于JB的侧壁中。左侧通常没有气化（NP）。丙炔下细胞和低鼓室细胞的存在各不相同。较不常见的类型包括副枕细胞（AOCs），后内侧管道(PMT)，和枕骨基底细胞（BOCs），这确定了侧壁气动模式的一致变化。在50个右侧和49个左侧未观察到内侧壁的气动。下壁分析揭示了AOC分布的对称性和NP的主要发生。侧壁下室（HT）的病例显示，与NP相比，IAC-JB距离平均增加了4.67mm，具有统计学意义。特定的气化，特别是外侧的HT，对IAC-JB距离有显著影响，显示从DPC到NP再到HT的距离增加的清晰模式。注意到HT气化的距离显着增加。还记录了JB发育不全和增生的实例，JB憩室，dehiscentJBs,高JB。
结论：这项研究建立了一种新的JB气化分类，以帮助理解颞骨解剖结构。
方法：分析了50次存档的CBCT扫描。
结果：内部声管（IAC）与JB之间的平均距离两侧为7.97mm（右：SD=2.56mm，范围3.16-13.3mm；左侧：SD=2.5mm，范围2.9-13.6毫米）。JB墙的气动被分为八种模式。深岩细胞（DPC）普遍存在于JB的侧壁中。左侧通常没有气化（NP）。丙炔下细胞和低鼓室细胞的存在各不相同。较不常见的类型包括副枕细胞（AOCs），后内侧管道(PMT)，和枕骨基底细胞（BOCs），这确定了侧壁气动模式的一致变化。在50个右侧和49个左侧未观察到内侧壁的气动。下壁分析揭示了AOC分布的对称性和NP的主要发生。侧壁下室（HT）的病例显示，与NP相比，IAC-JB距离平均增加了4.67mm，具有统计学意义。特定的气化，特别是外侧的HT，对IAC-JB距离有显著影响，显示从DPC到NP再到HT的距离增加的清晰模式。注意到HT气化的距离显着增加。还记录了JB发育不全和增生的实例，JB憩室，dehiscentJBs,高JB。
结论：这项研究建立了一种新的JB气化分类，以帮助理解颞骨解剖结构。
