小造影剂量64层螺旋CT肺动脉CTA对肺动脉栓塞成像研究

目的探讨小造影剂量的CT扫描对肺动脉、肺动脉栓塞的显示及其对图像质量的影响。方法收集了31例肺动脉栓塞多排螺旋CTA血管成像,分为二组:造影剂量对照组A组80毫升、研究组B组35毫升。两位对肺动脉影像有经验的高年资医师进行双盲法评估,观察肺动脉显示情况及肺动脉栓塞情况。结果所有的图像均达到了可以进行诊断的质量要求,研究组(B组)使用造影剂剂量较比对照组(A组)降低了约56%。结论研究组不影像肺动脉及肺栓塞的显示,但却有效的降低了造影剂剂量。

Objective To explore the effect of little contrast agent mufti-slice spiral CT pulmonary angiography( CTPA) to the image quality,pulmonary artery( P. A) and pulmonary embolism( P. E) . Method CTPA was performed in 31 patients with P. E. Dose of contrast agent: group: 80ml,B group: 35ml. The image quality of P. A and P. E were assessed by two experienced doctor. Result All images were available for diagnoses,but B groups contrast agent was reduced by 56% . Conclusion B group can reduce patients contrast agent while get can also display P. A and P. E.