Comparison of Image Quality Between Synthetic and Patients' Electrocardiogram-Gated 320-row Pediatric Cardiac Computed Tomography
Comparison of Image Quality Between Synthetic and Patients' Electrocardiogram-Gated 320-row Pediatric Cardiac Computed Tomography
复制标题
合成心电图与患者心电图门控 320 排儿童心脏计算机断层扫描之间的图像质量比较
DOI：
10.1007/s00247-019-04541-y
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发表时间：
2020
影响因子：
2.3
通讯作者：
Osamu Abe
中科院分区：
文献类型：
--
作者：
Eriko Maeda;Go Shirota;Eisuke Shibata;Shuhei Komatsu;Kenji Ino;Rumiko Torigoe;Osamu Abe
背景：儿童心脏计算机断层扫描（CT）可以在不放置电极的情况下通过合成心电图（ECG）获得。目的探讨在每分钟150次的合成心电图下，320排儿童CT对大体心脏结构和冠状动脉的描绘是否优于患者自己的心电图。材料与方法回顾性研究60例3岁以下先天性心脏异常患儿的320排CT检查。30例检查用儿童自己的心电图扫描门控，30例检查用150 bpm的合成心电图扫描。采用3分制比较两种门控方式的图像质量，描绘出以下解剖结构：房间隔、室间隔、右心房、右心室、左心房、左心室、肺动脉主动脉、升主动脉、主动脉弓（包括动脉导管未闭）、降主动脉、右冠状动脉和左主干。对比增强材料的光束硬化伪影采用3分制进行评估，整体图像质量采用5分制进行评估。结果人工心电图在描绘各结构、波束硬化伪影和整体图像质量上均不逊于患者心电图。除冠状动脉中、远端主观影像质量外，其他指标均为临床可接受的影像质量。结论采用合成心电门控技术可以获得3岁以下儿童心脏CT图像，其图像质量不低于患者的心电图像。
BackgroundPediatric cardiac computed tomography (CT) can be acquired without electrode placement by using synthetic electrocardiogram (ECG).ObjectiveTo determine whether the depiction of gross cardiac structures and coronary arteries in 320-row pediatric CT is not inferior when CT is gated with synthetic ECG at 150 beats per minute (bpm), compared to the patients’ own ECG.Materials and methodsSixty 320-row CT examinations performed in children younger than 3 years old with congenital cardiac anomaly were enrolled in this retrospective study. Thirty examinations were scanned using the children’s own ECG for gating and 30 examinations were scanned using synthetic ECG at 150 bpm. The image quality was compared between the two gating modes using a 3-point scale to delineate the following anatomical structures: atrial septum, ventricular septum, right atrium, right ventricle, left atrium, left ventricle, main pulmonary artery, ascending aorta, aortic arch including the patent ductus arteriosus, descending aorta, right coronary artery and left main trunk. Beam-hardening artifacts from contrast enhancement material were evaluated using a 3-point scale, and the overall image quality was evaluated using a 5-point scale.ResultsSynthetic ECG was not inferior to the patients’ ECG in depicting each structure, beam-hardening artifact and overall image quality. Average indices were clinically acceptable imaging quality, except for subjective image quality of mid and distal coronary arteries.ConclusionPediatric cardiac CT in patients younger than 3 years old can be acquired using synthetic ECG gating, with image quality not inferior to the patients’ ECG.