左肾静脉压迫综合征的多层螺旋CT三维重建成像诊断

【目的】探讨多层螺旋CT三维重建对左肾静脉压迫综合征的诊断价值。【方法】应用16层螺旋CT进行增强多期扫描，并获得各种后处理图像。【结果】8例左肾静脉压迫综合征病例均可见肠系膜动脉压迫左肾静脉的征象。CT横断位图像显示扩张左肾静脉最大直径为14．8mm，平均为7．5mm，左肾静脉最狭窄处直径为1．8mm，平均为2．1mm。CT多平面重建显示了腹主动脉与肠系膜上动脉夹角最大为20°，最小12°，平均为17．5°。【结论】多层螺旋CT三维重建在左肾静脉压迫综合征影像诊断中具有明确优势。

Multi-slice Spiral CT Three Dimensional Reconstruction for the Diagnosis of Left Renal Vein Entrapment Syndrome

[Objective]To explore the value of three dimensional reconstruction of multi-slice spiral CT in the diagnosis of left renal vein entrapment syndrome. [Methods] Multi-phase scans of urological system were performed with 16-slice CT scanner, and the images of all cases were reconstructed three-dimensionally and all kinds of post-processing images were acquired. [Results] The sign of superior mesenteric artery entrapping left renal vein appeared in 8 cases. On CT transversal images, the diameter and mean value of expansion of left renal vein was 14.88mm and 7. 5mm, respectively, and the diameter of stenosis of left renal vein was 1.8mm, with 2. 1mm at average. The angle between abdominal aorta and superior mesenteric artery could be showed directly by multiplanar reformation, and the maximal, minimal and mean angle were 20°, 12° and 17. 5°, respectively. [Conclusion] Multi slice spiral CT has obvious advantages in diagnosis of left renal vein entrapment syndrome.