健康成人副肝静脉的超声及螺旋CT对比研究

Comparative study on accessory hepatic veins by ultrasound and spiral CT in healthy adults

目的探讨超声与螺旋CT检查对副肝静脉(AHV)的显示规律及其临床价值。方法①超声随机观察600例健康查体者的AHV检出率、数量、管径及其与下腔静脉(IVC)轴线的夹角。②螺旋CT随机观察80例无病变肝AHV的检出率、数量、管径及其与下腔静脉轴线的夹角情况,并对9例AHV三维重建。结果①超声检查600例体检者378例显示AHV,检出率63%,共检出AHV436支,平均1.15支/例(436/378),平均内径(0.35±0.16)cm,180例显示较粗大的肝右后静脉210支,平均内径(0.41±0.19)cm;与IVC的夹角呈直角或近似直角者88%(384/436);呈锐角者12%(52/436)。②80例肝强化CT图像,仅24例显示粗大的肝右后静脉29支,平均内径(0.34±0.14)cm,未显示细小尾状叶静脉。结论超声及螺旋CT检查显示AHV有角度选择性,部分充盈良好、与IVC呈近似直角的AHV易于显示;超声检查在尾状叶静脉显示方面更优于螺旋CT检查。

Objective To evaluate the exhibition and clinical value of accessory hepatic veins （AHV） with ultrasound and spiral CT. Methods ①Choose 600 samples randomly to investigate the AHVs exhibition, number, caliber, and the angle between AHV and IVC with ultrasound. ②Choose 80 cases randomly to investigate the AHVs exhibition, number, caliber, and the angle between AHV and IVC with spiral CT, and the images of 9 cases were reconstructed. Results ①There were totally 436 AHVs in 378 of 600 cases （63%）, average 1.15/person （436/378）. The average caliber was （0. 35±0.16） cm. There were 210 inferior right hepatic veins in 180 cases. The average caliber was （0.41±0.19） cm. The most AHV＇s angle between IVC and AHV was right angle or close to right angle （88 %, 384/436）, minority was acute angle （12%, 52/436）. ②There were only 29 inferior right hepatic viens in 24 cases in 80 spiral CT scan images, average caliber was （0.3±0.14） cm. And no small AHVs displayed. Conclusion It is easier to display the AHVs which is right angle between IVC and AHV with ultrasound and spiral CT. But ultrasound is superior to spiral CT in displaying caudate veins.