腹部恶性肿瘤术后合并腹壁疝在不影响图像质量的情况下，降低对比剂注射流速，提高检查成功率。

回顾性纳入2018年1月至2019年12月在北京朝阳医院收治的进行了腹部CT增强检查的腹腔恶性病变术后合并腹壁疝患者共计73例，按照对比剂注射的速度分为A组（32例，对比剂注射速率3.0 ml/s）、B组（41例，对比剂注射速率2.5 ml/s）；所有患者均采用GE HD750 64层螺旋CT（GE Discovery CT750HD宝石CT）进行仰卧位腹部CT增强扫描。

主观及客观评价A组和B组图像质量差异均无统计学意义（P=0.714）。2组不良反应的发生率差异无统计学意义（P>0.05）。

对腹部恶性肿瘤术后合并腹壁疝患者进行腹部CT增强检查时，造影剂注射流速为2.5 ml/s时并不影响CT的图像质量，可以对原发病变进行评估，同时可以评估疝囊的情况，不良反应的发生率未见明显差异；降低造影剂注射流速可以降低对血管状况的要求，提高检查的成功率。

To reduce the injection velocity of contrast agent in the case of abdominal wall hernia following abdominal malignant tumor surgery, and to improve the success rate of examination without affecting the image quality.

A total of 73 patients with abdominal wall hernia following abdominal malignant tumor surgery who underwent enhanced abdominal CT in Beijing Chaoyang hospital from January 2018 to December 2019 were retrospectively included. They were divided into group A (n=32, with contrast agent injection velocity 3.0 ml/s) and group B (n=41, with contrast agent injection velocity 2.5 ml/s) according to the velocity of contrast agent injection. All patients received GE HD750 64-slice spiral CT (GE Discovery CT750HD Gem CT) for enhanced abdominal CT in supine position.

There was no statistical difference in image quality between group A and group B in subjective and objective evaluation. There was no statistical difference in the incidence of adverse reactions between group A and group B.

In patients with abdominal wall hernia following abdominal malignancy tumor surgery, enhanced abdominal CT with contrast injection velocity of 2.5 ml/s will not affect the image quality, can evaluate the primary lesion and, at the same time, the assessment of the situation of the hernial sac, while the incidence of adverse reactions did not have significant difference. However it can reduce the requirement of vascular conditions, and improve the success rate of examination.