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目的探讨国人女性距状沟在MRI图像上的形态、大小及其侧差。方法对40例女性志愿者头部进行高分辨率MRI扫描,获取横断面图像,用Brainvisa软件对其三维重建后,自动测量距状沟的沟深、沟宽和沟长。用SPSS软件对结果进行统计学分析,比较左右侧的差别。结果在正中矢状面上,距状沟后部分为分叉型(32.50%)、单峰型(25.00%)、平坦型(16.25%)、S型(15.00%)、双峰型(7.50%)和其他型(3.75%)6种类型。距状沟后部在正中矢状面上的位置可分为偏下(72.50%)、中间(21.25%)、偏上(6.25%)3种情况。女性距状沟的沟深左侧为(15.24±2.67)mm,右侧为(16.97±3.25)mm;沟宽左侧为(3.14±0.91)mm,右侧为(3.19±0.83)mm;沟底长左侧为(86.47±16.85)mm,右侧为(83.62±17.10)mm;沟顶长左侧为(70.52±12.40)mm,右侧为(64.90±15.17)mm。女性距状沟沟深右侧明显大于左侧(P<0.001),沟宽和沟长差别无统计学意义。距状沟末端转到大脑半球外侧面的超过半数(52.75%)。禽距的出现率为78.75%。结论女性距状沟的沟深右侧明显大于左侧。用三维重建的方式研究结构复杂的距状沟是一种很好的方法。
Objective To investigate the morphology, size and lateral difference of the palate ditch on the MRI images of Chinese women. Methods 40 female volunteers were scanned by high resolution MRI and the cross-sectional images were obtained. The brain depth, groove width and groove length were measured automatically with Brainvisa software after three-dimensional reconstruction. SPSS software was used for statistical analysis of the results, comparing the left and right side of the difference. Results In the median sagittal plane, the posterior part of the ditch was divided into the forked (32.50%), unimodal (25.00%), flat (16.25%), S (15.00%) and bimodal (7.50% ) And other types (3.75%) 6 types. The location of the dorsal part of the ditch in the median sagittal plane can be divided into three subtypes (72.50%), middle (21.25%) and upper (6.25%). The distance between the left side of the ditch and the left side of the ditch was (15.24 ± 2.67) mm and (16.97 ± 3.25) mm respectively; the width of the ditch to the left was (3.14 ± 0.91) mm and the right was (3.19 ± 0.83) mm; (86.47 ± 16.85) mm on the left side and (83.62 ± 17.10) mm on the right side, and (70.52 ± 12.40) mm on the left side and 64.90 ± 15.17 mm on the right side. The distance from the right side of the ditch to the ditch was significantly larger in the female than in the left side (P <0.001). There was no significant difference in the groove width and the groove length between the two groups. More than half (52.75%) of the ditch to the lateral hemispheric area of the brain. The incidence of fowl was 78.75%. Conclusion The distance ditch to the ditch on the right side of the ditch is significantly greater than the left side. It is a good method to study the structurally-shaped ditch in the way of 3D reconstruction.