多层CT三维重建技术观测颅底各孔径值并分析其形态和性别差异  

Observation and measurement of foramina of the skull base and analysis of their shape and gender differences by multislice CT three-dimensional reconstruction

作　　者：李岩[1] 张艳丽[1] 徐飞[1] 

机构地区：[1]大连医科大学解剖学教研室,辽宁省大连市116027

出　　处：《中国临床康复》2005年第33期25-27,共3页Chinese Journal of Clinical Rehabilitation

摘　　要：目的:探讨颅底内面多层CT三维重建图像效果及颅底各孔的正常值。方法:随机抽取2003-06/2004-04在大连医科大学附属第一医院经颅脑多层螺旋CT检查正常的成人200例,男100例,年龄21～85岁,平均54岁,女100例,年龄18～78岁,平均52岁。使用电子计算机三维重建程序立体地显示颅底内面的圆孔、卵圆孔、棘孔和破裂孔,并运用计算机的测量功能测出重建图像的颅底各孔径的内径均值,观察其形态及分析男女性别差异。结果:圆孔、卵圆孔、棘孔和破裂孔的最大径的平均值,男性左侧分别是4.57,8.27,2.66和8.98mm,右侧分别是4.56,8.38,2.68和8.92mm;女性左侧分别为4.35,7.82,2.11和8.21mm,右侧分别为4.32,7.76,2.08和8.35mm。男性卵圆孔、棘孔、破裂孔大于女性,差异有显著性意义(P<0.01)。各孔显示率圆孔为86%、卵圆孔为100%,棘孔为99%,破裂孔为99%。圆孔80%为椭圆形,卵圆孔66%为卵圆形,棘孔77%为椭圆形,破裂孔82%为三角形。结论:多层螺旋CT三维重建图像能够清晰地显示颅底的立体结构,显示颅底主要孔径,测出的各孔径大小与解剖标本所测出的正常值比较基本一致。AIM： To investigate the effects of three-dimensional reconstructed skull image through the muhislice spiral computed tomography （MSCT） and the normal values of main foramina in skull base. METHODS： From June 2003 to April 2004, 200 adults （100 males aged 21-85 years with an average of 54 years; 100 females aged 18-78 years with an average of 52 years）, whose transcranial CT examination was normal, were randomly selected from the First Affiliated Hospital of Dalian Medical University. The computer three-dimensional reconstruction program software was applied to display the foramen rotundum, foramen ovale, foramen spinosum and foramen lacerum. The measurement function of computer was adopted to determine the average inside diameters of the foramina above, and their shapes and gender differences were observed. RESULTS： The average values （measured from the inside view of the skull base） of the foramen rotundum, foramen ovale, foramen spinosum and foramen lacerum of male on the left side were 4.57, 8.27, 2.66 and 8.98 mm respectively, and those on the right side were 4.56, 8.38, 2.68 and 8.92 mm respectively; Those of female on the left side were 4.35, 7.82, 2.11 and 8.21 mm respectively, and those on the right side were 4.32, 7.76, 2.08 and 8.35 mm respectively. The foramen ovale, foramen spinosum and foramen lacerum were significantly larger in males than in females （P 〈 0.01）. The display rates of foramen rotundum, foramen ovale, foramen spinosum and foramen lacerum were 86%, 100%, 99% and 99% respectively. 80% of the foramen rotundum were elliptical, 66% of the foramen ovale were ovoid, 77% of the foramen spinosum were elliptical and 82% of the foramen lacerum were triangular. CONCLUSION： MSCT three-dimensional reconstructed image can clearly display the three-dimensional structure of the skull base and main foramina in the skull base. The measured aperture dimensions through MSCT threedimensional reconstruction technique are basically in accordance with the normal measured values of an

关 键 词：颅底 体层摄影术 X线计算机方法 图像处理 计算机辅助方法 人体测量术 

分 类 号：R741[医药卫生—神经病学与精神病学]