Value of High-Definition Cardiovascular CT Scanning Mode and Adaptive Statistical Iterative
Reconstruction-CV Technique in Coronary CT Angiography Imaging After Coronary Stent
Implantation
LIN Yuefeng1, ZHAO Hengyu1, GUO Ying2, YE Lianghai1, WANG Guanshui1, WANG Bo1
1. Department of Imaging, Xiamen Cardiovascular Hospital Xiamen University, Xiamen Fujian 361000, China;
2. CT Image Research Center, General Electric (GE) in China, Guangzhou Guangdong 510623, China
Abstract：Objective To explore the value of dedicated cardiovascular CT scanner and evaluate the influence of adaptive statistical
iterative reconstruction-CV (ASIR-CV) technique in high-resolution CT coronary stent imaging with different
convolution kernels. Methods A total of 53 patients with 105 coronary stents were performed coronary computed tomography
angiography (CCTA) by using dedicated cardiovascular CT scanner (CardioGraphe CT, GE Healthcare). Images were reconstructed
at convolution kernel of CV-standard, HD-standard and HD detail with ASIR-CV technique as three groups. Subjective and objective
evaluation of image quality of the three groups were performed and compared by two experienced radiologists independently.
Results With the increase of the weight of ASIR-CV, there was no significant difference in CT values among the three groups; While
the noise of the image gradually decreased, contrast to noise ratio (CNR) and signal to noise ratio (SNR) increased. The 50%, 70%,
and 90% weight groups and pairwise comparisons had significant differences (P<0.05). With the increase of the sharpness of the
reconstruction algorithm, there was no significant difference in CT values among the three groups; While CNR and SNR gradually
decreased and noise gradually increased, there were significant differences among the three groups and pairwise comparisons (P<0.05).
With the increase of different ASIR-CV weights, there was no significant difference in subjective evaluation results (P>0.05); the
subjective evaluation of HD detail reconstruction was higher than that of HD standard and CV standard (P<0.05), and there was
significant difference among the three groups. Conclusion The high-definition scanning mode and ASIR-CV technique can improve
the image quality of coronary stent, and provide high-quality images with clinical satisfaction for the reexamination after coronary
stent implantation.
林跃锋1，赵恒宇1，郭英2，叶良海1，王观水1，王博1. 新一代心血管专用CT高清扫描模式与迭代重建技术对冠状动脉支架植入
术后CCTA成像的价值[J]. 中国医疗设备, 2022, 37(7): 84-88.
LIN Yuefeng1, ZHAO Hengyu1, GUO Ying2, YE Lianghai1, WANG Guanshui1, WANG Bo1. Value of High-Definition Cardiovascular CT Scanning Mode and Adaptive Statistical Iterative
Reconstruction-CV Technique in Coronary CT Angiography Imaging After Coronary Stent
Implantation. China Medical Devices, 2022, 37(7): 84-88.
