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目的明确骶棘韧带MRI最佳扫描平面角度并探讨其临床意义。方法 (1)正常成人新鲜尸体骨盆标本8具,观察骶棘韧带起止点及其形态特点;(2)利用36例正常人骨盆CT数据,测量骶棘韧带在矢状面上的投影与冠状面的角度;(3)对10名志愿者进行3D MRI扫描,记录骶棘韧带角度并与CT数据对比;比较斜冠状面与常规3个面的显像效果。结果 (1)骶棘韧带起于骶尾部连接至坐骨棘。(2)骶棘韧带在矢状面上的投影与冠状面的角度CT数据测量结果为(61.32±8.71)°,在双侧及性别上无统计学差异(P>0.05);(3)MRI测量结果为(57.53±2.12)°。CT数据与MRI数据比较无统计学差异(P>0.05);斜冠状面的成像优于常规扫描(P<0.05)。结论骶棘韧带MRI扫描在(60.0±5.0)°斜冠状面上显像较好,是常规扫描的重要补充。
Objective To determine the best scan plane angle of sacrospinal ligament and to discuss its clinical significance. Methods (1) Eight adult fresh cadaveric pelvis specimens were examined for the onset and the absence of the sacrospinous ligament and its morphological characteristics. (2) The pelvis CT data of 36 normal people were used to measure the projection of the sacrospinal ligament in the sagittal plane and the coronal plane (3) 10 volunteers were scanned by 3D MRI, the angle of sacrospinous ligament was recorded and compared with CT data; the imaging results of oblique coronal and conventional 3 surfaces were compared. Results (1) The sacrospinous ligaments originate from the sacrococcygeal junction to the sciatic spine. (2) The CT data of the sacrospinous ligament in the sagittal plane was (61.32 ± 8.71) °, and there was no significant difference in bilateral and gender (P> 0.05). (3) MRI The measurement result was (57.53 ± 2.12) °. There was no significant difference between CT data and MRI data (P> 0.05). Imaging of oblique coronal plane was superior to conventional scan (P <0.05). Conclusions MRI scan of sacrospinal ligament is better than that of (60.0 ± 5.0) ° oblique coronal plane, which is an important supplement of routine scanning.