摘要
目的测量成人肠系膜上动脉(SMA)主干及邻近结构在多层螺旋CT(MSCT)上的正常数值范围,分析比较其年龄及性别之间差异。方法 260例检查者(男140例,女120例)行腹部MSCT增强扫描,采用薄层最大强度投影(MIP)图像后处理技术进行矢状位SMA血管成像,测量并分析SMA主干及邻近正常解剖结构。结果 SMA直径为(0.68±0.10)cm,SMA与腹腔干(CA)之间距离(1.55±0.33)cm,SMA与肠系膜下动脉(IMA)之间距离为(6.69±0.88)cm,SMA与腹主动脉(AA)间夹角为(59±18)°。男女两组SMA、CA及AA直径差异均有统计学意义(P<0.05),男女两组SMA与AA夹角、SMA与IMA、SMA与CA之间距离差异均无统计学意义(P>0.05)。SMA、CA直径不同年龄组间差异无统计学意义(P>0.05),AA直径不同年龄组间差异有统计学意义(P<0.05)。结论 MSCT可清晰显示成人SMA主干及邻近结构解剖,并能准确测量其正常数值范围。
Objective To measure the caliber extent of the superior mesenteric artery（SMA） stem and adjacent structures in different genders and ages.Methods The data from 260 patients（140 females,120 males） were acquired.The caliber of the SMA stem was measured and the adjacent anatomical structures were identified in patients who underwent abdominal contrast-enhanced multi-slice helical CT（MSCT）.Sagittal imaging of the SMA was acquired by the thin slab maximum intensity projections（TSMIP） post-processing technique.Results The diameter of the SMA was（0.68±0.10）cm,the distance between the SMA and the celiac artery（CA） was（1.55±0.33）cm,the distance between the SMA and the inferior mesenteric artery（IMA） was（6.69±0.88）cm,and the angle between the SMA and the abdominal aorta（AA） was（59±18）°.The statistical difference between males and females was observed in the diameters of the SMA,CA and AA（P0.05）.There was no statistical difference between males and females in the distances of the SMA and CA,the distance of the SMA and IMA,and the angle of the SMA and AA（P0.05）.The diameter of the CA had no significant difference（P0.05）,but there was statistical difference in the diameter of the AA in different ages（P0.05）.Conclusion The SMA stem and adjacent anatomical structures were delineated by MSCT and the extent of diameter could be exactly measured.
出处
《山东大学学报（医学版）》
CAS
北大核心
2010年第8期96-99,共4页
Journal of Shandong University:Health Sciences
关键词
成人
肠系膜上动脉主干
多层螺旋CT
Adult
Superior mesenteric artery stem
Multi-slice helical CT
