Cisneros Ana Isabel, Whyte Jaime, Martínez Claudio, Obón Jesús, Whyte Ana, Crovetto Rafael, Crovetto Miguel Ángel
Department of Human Anatomy and Histology, School of Medicine, University of Zaragoza, C/Domingo Miral, s/n, 50009, Zaragoza, Spain.
Surg Radiol Anat. 2013 Jan;35(1):61-5. doi: 10.1007/s00276-012-1019-7. Epub 2012 Sep 18.
To study the radiological patterns of the bony roof of the superior semicircular canal with a view for obtaining readily applicable conclusions.
84 patients (163 petrous bones) have been studied by Multi-slice Helical Computed tomography (Philips Brilliance 6). We have determined the distribution of the different types of bone cover of the superior semicircular canal, taking some previously notified, standardised measurements of normality as reference.
During the analysis of the roof of the superior semicircular canal, we have distinguished five different types, depending on their thickness and tomodensitometric aspect. Normal pattern in 121 cases (74.2 %), with a thickness of between 0.6 and 1.7 mm, papyraceous pattern or fine thickness ≤0.5 mm that appears in 23 of our cases (14.1 %), thick pattern ≥1.8 mm that we have observed in 11 cases (6.7 %), and pneumatised pattern in 5 cases (3.1 %), which is characterised by having supralabyerinthine cells. Finally, a dehiscent pattern was observed in three cases (1.8 %).
We describe five patterns of superior semicircular canal roofs: normal, thick, papyraceous, pneumatised and dehiscent. The papyraceous type and the dehiscent type would be subject to producing pathology, and in some cases the latter could be a consequence of the former.
研究上半规管骨顶的放射学模式，以期得出易于应用的结论。
对84例患者（163块颞骨）进行了多层螺旋计算机断层扫描（飞利浦Brilliance 6）研究。我们以上述一些预先公布的标准化正常测量值为参考，确定了上半规管不同类型骨覆盖的分布情况。
在对上半规管骨顶的分析中，根据其厚度和密度测定表现，我们区分出五种不同类型。121例（74.2%）为正常模式，厚度在0.6至1.7毫米之间；23例（14.1%）为纸样模式或薄厚度≤0.5毫米；11例（6.7%）为厚模式≥1.8毫米；5例（3.1%）为气化模式，其特征为存在迷路上细胞。最后观察到3例（1.8%）为裂开模式。
我们描述了上半规管骨顶的五种模式：正常、厚、纸样、气化和裂开。纸样类型和裂开类型可能会引发病变，在某些情况下，后者可能是前者的结果。
