Euathrongchit Juntima, Deesuwan Pariyanoth, Kuanprasert Srun, Woragitpoopol Surin
Department of Radiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
J Med Assoc Thai. 2009 Feb;92(2):236-42.
To determine the normal size of the thoracic aorta among Thai people.
The aortic diameter of 73 Thai males and 56 Thai females, in four age groups, were measured from thoracic Multidetector Computed Tomography (MDCT) images. Aortic size were analyzed and correlated by age, sex, and vertebral body.
All showed normal aortic configuration, i.e. smooth tapering from aortic root to ascending and descending aorta. Mean aortic diameters were 3.12 cm at proximal ascending aorta, 2.95 cm at distal ascending aorta, 2.59 cm at mid arch, 2.33 cm at proximal descending aorta, 2.14 cm at distal descending aorta, and 2.03 cm at diaphragm. Males' aorta were larger than females, and all levels of the aorta were significantly enlarged with increasing age. Tapering of the vessel ratio of the ascending aorta/distal aorta at diaphragm was 1.5 without statistical significance. There was a weak correlation between aortic size and vertebral body at all levels. Comparing the size of the aorta to that of the vertebrae, the aorta was larger at the ascending part, equal at the mid arch and smaller at the descending part.
Among the Northern Thai people, the average size of the aorta was determined at each level. It was found that aortic size is significantly dependent on age, sex, and vertebral body width.
确定泰国人群胸主动脉的正常大小。
从胸部多排螺旋计算机断层扫描（MDCT）图像中测量73名泰国男性和56名泰国女性四个年龄组的主动脉直径。分析主动脉大小与年龄、性别和椎体的相关性。
所有患者的主动脉形态均正常，即从主动脉根部到升主动脉和降主动脉呈平滑逐渐变细。升主动脉近端平均直径为3.12cm，升主动脉远端为2.95cm，主动脉弓中部为2.59cm，降主动脉近端为2.33cm，降主动脉远端为2.14cm，膈肌处为2.03cm。男性主动脉比女性大，且随着年龄增长，主动脉各水平均显著增粗。升主动脉/膈肌处降主动脉的血管逐渐变细比例为1.5，无统计学意义。主动脉大小与各水平椎体之间存在弱相关性。将主动脉大小与椎体大小进行比较，升主动脉处主动脉较大，主动脉弓中部相等，降主动脉处较小。
在泰国北部人群中，确定了主动脉各水平的平均大小。发现主动脉大小显著依赖于年龄、性别和椎体宽度。
