探究在腹壁疝诊断的过程中使用CT腹部扫描（低剂量）的效果。

选取2019年1至12月，首都医科大学附属北京朝阳医院西区放射科收治65例腹壁疝患者的资料。在临床初次检查时行正常剂量（260 mAs组）进行腹部CT扫描，在其后进行的腹部增强时将平扫序列降低为原来的50%剂量（130 mAs组），观察并比较效果。

正常剂量组优良率（92.30%）稍高于低剂量组（83.10%），但其差异无统计学意义（χ²=0.251，P=0.684）。260 mAs组的CNR及SNR分别为12.17±1.86、3.66±1.15，稍高于130 mAs组10.26±2.16、2.87±1.06，260 mAs组的SD为9.6±1.61稍低于130 mAs组11.5±2.51，差异有统计学意义（t=0.685、0.375、0.411，P均<0.05）。

腹部CT扫描（低剂量）在腹壁疝的应用效果良好，相比较常规剂量而言，在图像质量和噪音等方面无明显差异，但可以有效地降低辐射剂量，因而值得在腹壁疝的诊断治疗过程中进行借鉴和使用。

To investigate the effect of CT abdominal scan (low dose) in the diagnosis of abdominal wall hernia.

Sixty-five patients with abdominal wall hernia admitted to Beijing Chaoyang hospital from January to December 2019 were selected for diagnosis. Normal dose of abdominal CT scan (260 mAs) was performed at the time of the initial clinical examination as the control group. In the subsequent abdominal enhancement, the plain scan sequence was reduced to 50% of the original dose (130 mAs), which was set as the observation group.

The rate of excellent and good images in the control group was slightly higher than that in the observation group, but there was no significant difference (χ²=0.251, P=0.684). The CNR and SNR of the control group were 12.17±1.86 and 3.66±1.15, respectively, which were slightly higher than 10.26±2.16 and 2.87±1.06 in the observation group. The SD of the control group was 9.6±1.61, which was slightly lower than that of the observation group 11.5±2.51. The difference was statistically significant (t=0.685、0.375、0.411, P<0.05).

Abdominal CT scan (low dose) has a good effect on abdominal hernia. Compared with conventional dose, there is no significant difference in image quality and noise, but it can effectively reduce the radiation dose. Therefore, it is worthy of reference and use in the diagnosis and treatment of abdominal hernia.