脊髓动脉64排CT血管成像解剖学研究  

Imaging Anatomical Evaluation of Spinal Artery with 64--detector Row CT Angiography

作　　者：王亚蓉[1] 王玮[1] 雷学斌[1] 白建军[1] 杨赵峰[1] 朱佳[1] 井勇[1] 杨娟[1] 

机构地区：[1]第四军医大学唐都医院放射科,陕西西安710038

出　　处：《实用放射学杂志》2009年第6期861-865,共5页Journal of Practical Radiology

摘　　要：目的评价64排CT血管成像（CTA）对脊髓动脉的显示能力及其影像学解剖特征。方法121例（男87例，女34例）行64排CT胸腹联合增强扫描的患者，获得原始图像后，图像经颅脑CT算法及小视野二次重建，利用多平面重建（MPR）、最大密度投影（MIP）、斜面重建（OPR）和曲面重建（CPR）观察脊髓动脉特征：①脊髓前动脉（ASA）和大根髓动脉（AA）显示率；②ASA影像解剖特点；③AA影像解剖特点。结果121例共可在CTA上确定显示ASA121支（100％），ASA显示范围为T4～L2；AA的显示率为100％，其中22例（22／121，18％）出现副AA动脉；AA起源于左侧肋间动脉和腰升动脉的89例（89／121，81％），其中80支源于第T8～L2水平（80／89，90％）；AA动脉供血动脉（肋间动脉或腰动脉）的直径（2．8±0．82）mm，男性组（3．0±0．66）mm，女性组（2．7±0．91）mm；发出AA的根髓动脉椎间孔段直径为（1．7±0．41）mm，男性组（1．8±0．37）mm，女性组（1．7±0．33）mm；AA起始部平均直径（1．6±0．27）mm，男性组（1．6±0．44）mm，女性组（1．6±0．23）mm；AA汇入AsA前直径（1．3±0．41）mm，男性组（1．3±0．54）mm，女性组（1．3±0．44）mm。以上各血管直径在男女组间没有统计学差异（P〉0．05）。结论脊髓动脉的解剖学特征复杂，64排CT可以对其进行较好的评价。Objective To evaluate the ability of 64--detector row CT angiography in identifying the imaging anatomic characteristics of main spinal artery . Methods 121 patients （87 men and 34 women） underwent thoracoabdominal contrast--enhanced CT scans with collimation 64）〈 0. 625 mm. The raw data were adopted to reconstruct the spinal canal with a small field of view. The re- construction algorithm was brain algorithm. The image reformation techniques including multiplanar reformation（MPR）, maximum intensity projection（MIPI, oblique planar reformation（OPR） and curve planar reformation（CPR） were used to evaluate the anatomi- cal features of main spinal artery,that were： （1）The demonstration of anterior spinal artery（ASA） and the artery of Adamkiewicz （AA） ; （2）the imaging anatomical characteristics of ASA; （3）the imaging anatomical characteristics of AA. Results ASA was clearly displayed in all 121 patients （100%） ,the extent was from T4 to L2 vertebra. Successful depiction of AA was achieved in all patients and 22 duplications of AA were found （22/121, 18%）. AA originating from the left intercostal and lumbar arteries was identified in 89 patients （89/121,81% } ,of them, AA originated from the level of the 8th thoracic vertebrae to the 2nd lumbar vertebrae （80/89, 90 % ）in 80. The average diameter of the intercostal or lumbar artery from which AA originates was （2.8 ±0.82） mm and there was no sex--specific propensity （3.0±0.66} mm in male group, （2.7±0.91） mm in female group, P〈0.05）. The average diameter of the radiculomedullary artery in the course of vertebral foramen was （ 1.7± 0.41 ） mm and no sex--specific propensity was found （1.8±0.37） mm in male group, （1.7±0.33） mm in female group, P〈0.05）. The average diameter of the base segment of AA was （1.6±0.27） mm and there was no sex--specific propensity（1.6±0.44） mm in male group, （1.6±0.23） mm in female group,（ P 〉 0.05 ） . The average diameter of the char

关 键 词：脊髓动脉 体层摄影术 X线计算机 血管造影术 解剖学 

分 类 号：R322.81[医药卫生—人体解剖和组织胚胎学] R322.122[医药卫生—基础医学]