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International Journal of Clinical Research. 2021; 5: (1) ; 10.12208/j.ijcr.20210011.

Application analysis of low-dose CT scan in reexamination after craniocerebral surgery
低剂量CT扫描在颅脑术后复查中的应用分析

作者: 杜佳忆,董凤玲*

西安医学院第二附属医院影像科 陕西西安

*通讯作者:董凤玲,单位:西安医学院第二附属医院影像科 陕西西安;

引用本文: 杜佳忆,董凤玲. 低剂量CT扫描在颅脑术后复查中的应用分析[J]. 国际临床研究杂志, 2021, 5(1) : 45-47.
Published: 2021-01-29

摘要

目的 探究低剂量CT扫描在颅脑术后复查中的应用分析。方法 选择颅脑术后复查患者共108例,时间为2019年12月至2020年12月,甲组(管电压120kv,管电流300mA)、乙组(管电压120kv,管电流200mA)、丙组(管电压120kv,管电流160mA),各36例,对比患者的CT辐射剂量、扫描图像质量评估情况。结果 随着管电流降低,基于管电压不变的情况下,CTDI和DLP呈现出下降的趋势。乙组、丙组的组CTDI、DLP,较甲组均明显降低,存在统计学意义(P<0.05);经对甲组和乙组的扫扫描,发现大多图像质量评分处于4分,在扫描丙组时,2分是大部分的图像评分,质量呈现出显著降低的趋势,经秩和检验三组的差距,存在统计学意义(P<0.05);在进行头颅CT平扫时,分别选择300 mA、200mA和160 mA完成,之后对图像完成盲法评分。结论 针对产后出血患者,采用200 mA头颅低剂量CT扫描,可显著降低辐射剂量,安全性较高,具有临床应用价值。

关键词: 颅脑术;CT扫描;低剂量;复查

Abstract

Objective To explore the application and analysis of low-dose CT scan in reexamination after craniocerebral surgery. Method: choose the post-cranial surgery A total of 108 patients were examined, from December 2019 to December 2020. Group A (tube voltage 120kv, tube current 300mA), Group B (tube voltage 120kv, tube current 200mA), group C (tube voltage 120kv, tube current 160mA), 36 cases in each group, compare the CT radiation dose of patients and the evaluation of scan image quality. Result: As the tube current decreases, CTDI and DLP show a downward trend based on the constant tube voltage. The CTDI and DLP of group B and group C were significantly lower than those of group A, which was statistically significant (P<0.05). After scanning group A and group B, it was found that most of the image quality scores were at 4 points. In group C, 2 points are most of the image scores, and the quality shows a significant decrease in quality. The difference between the three groups after the rank sum test is statistically significant (P<0.05); when performing a head CT scan, select them separately 300 mA, 200 mA and 160 mA are completed, and then the image is blindly scored.
Conclusion  : For patients with postpartum hemorrhage, the use of 200 mA low-dose head CT scan can significantly reduce the radiation dose, with high safety and clinical application value.

Key words: Cranial Surgery; CT Scan; Low-Dose; Review

参考文献 References

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