Graduate Program on Health Sciences, University of Brasília, Brasília, Brazil.
Braz J Otorhinolaryngol. 2013 Aug;79(4):446-53. doi: 10.5935/1808-8694.20130080.
Computed tomography-based measurements of mastoid surface area and volume have not been described for adult Brazilian individuals. These measurements add to the understanding of middle ear physiology, related diseases, and their impact on mastoid pneumatization.
To check the ratio between mastoid surface area and volume.
This contemporary cross-sectional cohort study included 28 patients submitted to CT imaging of the mastoid. Measurements of surface area and volume were made based on serial CT scans and produced with the aid of software package Image Pro Plus.
Mastoid volumes ranged from 5.5 to 72.4 cm³. Surface areas ranged from 43.9 to 525.2 cm². Surface areas varied linearly with volumes.
Mastoid surface areas and volumes of adult Brazilian subjects followed a linear correlation, as also described in studies carried out in other countries. Mean surface areas and volumes were higher than previously published, unlike surface area-to-volume ratios, which were lower. Further studies with larger populations will provide evidence as to whether Brazilian subjects have larger surface areas and volumes than other populations.
检查乳突表面积与体积之间的比例。
本当代横断面队列研究纳入了 28 例接受乳突 CT 成像的患者。基于连续 CT 扫描进行表面积和体积测量，并借助 Image Pro Plus 软件包生成。
乳突体积范围为 5.5 至 72.4cm³。表面积范围为 43.9 至 525.2cm²。表面积与体积呈线性关系。
与在其他国家进行的研究一样，巴西成年受试者的乳突表面积和体积呈线性相关。平均表面积和体积大于先前的报道，而表面积与体积的比值则较低。进一步的研究将为巴西受试者的表面积和体积是否大于其他人群提供证据。
