双源CT前门控大螺距扫描在小儿先天性心脏病诊断中的应用

发布时间：2018-05-02 06:47

本文选题：先天性心脏病 + 双源CT血管造影　；参考：《放射学实践》2017年03期

【摘要】：目的:评价双源CT(DSCT)前门控大螺距扫描在小儿先天性心脏病中的应用价值。方法:搜集行DSCT血管造影并经手术证实的先天性心脏病患儿67例,34例行前门控大螺距扫描(大螺距扫描组),33例行前门控序列扫描(序列扫描组)。比较两组的图像质量、有效辐射剂量及诊断效能。结果:大螺距扫描组与序列扫描组大血管图像质量评分差异无统计学意义(Z=0.123,P0.05),大螺距扫描组心内结构和冠状动脉近中段评分低于序列扫描组,差异有统计学意义(Z=3.574、4.728,P0.05)。两组升主动脉、主肺动脉、左心室、右心室的CT值、噪声值及信噪比差异均无统计学意义(P0.05)。大螺距扫描组和序列扫描组平均有效辐射剂量分别为(0.36±0.08)mSv、(0.51±0.08)mSv,差异有统计学意义(t=8.200,P0.05)。大螺距扫描组和序列扫描组对心血管畸形的诊断符合率分别为98.82%、99.09%,差异无统计学意义(χ~2=0.347,P0.05)。结论:DSCT前门控大螺距扫描用于小儿先心病能够获得较高的图像质量和诊断符合率,且辐射剂量显著降低。
[Abstract]:Objective: to evaluate the application value of double source CTD SCT front door controlled large pitch scan in children with congenital heart disease. Methods: 67 children with congenital heart disease proved by DSCT angiography and 34 patients with congenital heart disease were examined with large pitch scan (large pitch scan group, 33 cases with front door control sequence scan (sequence scan group). Image quality, effective radiation dose and diagnostic efficacy were compared between the two groups. Results: there was no significant difference in large vessel image quality score between the large pitch scan group and the sequence scan group. The scores of the intracardiac structure and the proximal middle segment of coronary artery in the large pitch scan group were lower than those in the sequence scan group, and the difference was statistically significant (P 0.05). There was no significant difference in CT value, noise value and signal-to-noise ratio between the two groups in ascending aorta, main pulmonary artery, left ventricle and right ventricle. The average effective radiation dose of large pitch scanning group and sequential scanning group was 0.36 卤0.08mSvlvln 0.51 卤0.08mSv, respectively. The difference was statistically significant (P 0.05). The diagnostic coincidence rates of large pitch scan group and sequence scan group for cardiovascular malformation were 98.822 and 99.09, respectively. The difference was not statistically significant (蠂 ~ (2 / 2) 0.347) (P < 0.05). Conclusion the high image quality and diagnostic coincidence rate can be obtained by using the large pitch scan of the front door control of the DSCT in children with congenital heart disease, and the radiation dose is significantly reduced.
【作者单位】：济宁医学院附属医院;青岛大学附属医院放射科;
【分类号】：R725.4;R816.92

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