The feasibility of 1-stop examination of coronary CT angiography and abdominal enhanced CT.
The feasibility of 1-stop examination of coronary CT angiography and abdominal enhanced CT.
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DOI：
10.1097/md.0000000000011651
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发表时间：
2018-08
期刊：
影响因子：
1.6
通讯作者：
Gu WH
中科院分区：
文献类型：
--
作者：
Fang W;Wang CH;Yu YF;Wang LH;Tang DH;Xu DB;Ding ZY;Gu WH
本研究旨在评价一次性注射该药物进行冠状动脉计算机断层扫描血管造影（CCTA）和腹部增强计算机断层扫描（CT）的可行性。收集20例完成CCTA和腹部增强CT一站式联合检查的患者（A组）、20例仅接受腹部增强CT检查的患者（B1组）和20例仅接受CCTA检查的患者（B2组）的CCTA图像（右冠状动脉、左冠状动脉前降支和左冠状动脉回旋支）。由2名有经验的放射科医师使用5分Likert量表系统对这些图像进行解释，并观察腹部图像是否存在呼吸伪影。记录3组患者的CT值、信噪比（SNR）、CTDI，并进行比较。A组和B1组的冠状动脉图像质量和造影剂总量差异无统计学意义（P> 0.05）。 与A组（CT：360.35 ± 34.16，SNR：13.76 ± 1.84，P =.03，.01）相比，B1组（CCTA）的CT值和SNR（CT：394.65 ± 59.23，SNR：17.38 ±4.13）增加，而CTDI在A组（17.14 ± 6.20）和B1组（18.38 ± 9.79）之间无差异（P =.64）。 A组（腹部）与B2组之间动脉期CT值和SNR以及静脉期CT值差异有统计学意义，A组CTDI（9.09 ± 1.05）较B2组（8.23 ± 1.33）增加（P =.03），B2组静脉期SNR（12.50 ± 2.43）较A组（10.89 ± 2.03）增加（P =.03）。 Revolution CT可以捕获完整图像并非常快速地切换到扫描模式，从而实现一站式轴向CCTA和增强螺旋腹部扫描。一站式组合扫描获得了令人满意的图像质量，减少了造影剂剂量并简化了工作流程。一站式组合扫描可提高检查成功率，减少检查次数，并降低造影剂注射剂量和风险。这将有助于患者及时获得诊断图像。
This study aims to evaluate the feasibility of performing coronary computed tomography angiography (CCTA) and abdominal enhanced computed tomography (CT) with 1-time injection of the agent. CCTA images (right coronary artery, left anterior descending coronary artery, and left circumflex coronary artery) were collected from 20 patients who completed a 1-stop combined examination of CCTA and abdominal enhanced CT (group A), 20 patients who only underwent abdominal enhanced CT (group B1), and 20 patients who only underwent CCTA (group B2). These images were interpreted using the 5-point Likert scale system by 2 experienced radiologists, and abdominal images were observed for breathing artifact. CT value, signal-to-noise ratio (SNR), and CTDI were recorded and compare among the 3 groups. The difference in image quality of the coronary and total volume of the contrast agent between group A and group B1 was not statistical significant (P > .05). The CT value and SNR in group B1 (CCTA) (CT: 394.65 ± 59.23, SNR: 17.38 ± 4.13) increased, compare with Group A (CT: 360.35 ± 34.16, SNR: 13.76 ± 1.84, P = .03, .01), while CTDI was undifferentiated between group A (17.14 ± 6.20) and group B1 (18.38 ± 9.79) (P = .64). The difference in CT value and SNR at the arterial phase and CT value at the venous phase between group A (abdomen) and group B2 were statistically significant, the CTDI in group A (9.09 ± 1.05) increased, compared with group B2 (8.23 ± 1.33) (P = .03), and SNR at the venous phase in group B2 (12.50 ± 2.43) increased, compared with group A (10.89 ± 2.03) (P = .03). Revolution CT can capture full images and very rapidly switch to the scan mode, enabling a 1-stop axial CCTA and enhanced helical abdominal scan. The 1-stop combined scan resulted in a satisfactory image quality, which reduced the contrast agent dose and simplified the workflow. The 1-stop combined scan allows for the high success rate of the examination, reduces the number of examinations, and decreases the dose and risk of injection of the contrast agent. This would be helpful for patients to obtain diagnostic images in time.