论文部分内容阅读
目的:分析自动选择最佳时相SmartPhase功能在心律不齐患者心脏冠脉CT血管造影（CTA）成像中的应用价值。方法:选取2020年1月至12月于华中科技大学协和深圳医院进行冠心病筛查的患者60例为研究对象，其中男34例、女26例，年龄（63.56±3.71）岁，所有患者均接受冠状动脉CTA检查，根据重建图像时相选择的不同设为人工时相组（人工选择时相重建图像）和自动最佳时相组（自动选择最佳时相SmartPhase功能）。比较两种时相下主动脉根部参数值、冠状动脉各分支血管评分。结果:2种时相CT值比较，差异无统计学意义（n P＞0.05）；自动最佳时相组主动脉根部噪声值（SD）为（30.66±3.37）HU，低于人工时相组（37.04±3.98）HU，信噪比（SNR）为（15.12±3.25）HU，高于人工时相组（12.36±3.45）HU，差异均有统计学意义（均n P＜0.05）。自动最佳时相组冠状动脉各分支血管（右冠状动脉、左冠状动脉主干、左前降支、左回旋支）评分分别为（3.61±1.03）分、（4.30±0.48）分、（4.10±0.57）分、（3.80±0.80）分，均高于人工时相组（2.50±0.85）分、（3.82±0.47）分、（3.64±0.53）分、（3.21±0.66）分，差异均有统计学意义（均n P＜0.05）。n 结论:在心律不齐患者进行CTA检查时，采用自动选择最佳时相功能重建图像可以提升SNR和图像质量，为患者的诊断提供更清晰的图像。“,”Objective:To analyze the application value of SmartPhase in coronary CT angiography (CTA) in patients with arrhythmia.Methods:A total of 60 patients who underwent coronary heart disease screening in Union Shenzhen Hospital of Huazhong University of Science and Technology from January to December 2020 were selected as the research objects, including 34 males and 26 females, aged (63.56±3.71) years. All patients underwent coronary CTA. According to the different phase selection of reconstructed images, they were set as a manual phase group (using manual phase selection to reconstruct images) and an automatic optimal phase group (using SmartPhase function to automatically select the optimal phase). The aortic root parameters and coronary artery branch scores were compared between the two phases.Results:There was no statistically significant difference in the CT value between the two phases (n P>0.05). The noise value (SD) of aortic root in the automatic optimal phase group was (30.66±3.37) HU, which was lower than that in the manual phase group [(37.04±3.98) HU], the signal-to-noise ratio (SNR) was (15.12±3.25) HU, which was higher than that in the manual phase group [(12.36±3.45) HU], with statistically significant differences (bothn P<0.05). The scores of coronary artery branches (right coronary artery, left main coronary artery, left anterior descending branch, and left circumflex branch) in the automatic optimal phase group were (3.61±1.03) points, (4.30±0.48) points, (4.10±0.57) points, and (3.80±0.80) points, which were higher than those in the manual phase group [(2.50±0.85) points, (3.82±0.47) points, (3.64±0.53) points, and (3.21±0.66) points], with statistically significant differences (alln P<0.05).n Conclusion:In the CTA examination of patients with arrhythmia, automatic selecting the optimal phase function can improve the SNR and image quality, and provide clearer images for the diagnosis of patients.