The clinical value of coronary snapshot freeze combined with wide body detector in improving coronary image quality with multi-temporal
10.3969/j.issn.1002-1671.2025.11.027
- VernacularTitle:冠状动脉追踪冻结联合宽体探测器在多时相下改善冠状动脉图像质量的临床价值
- Author:
Yueyue JING
1
;
Yongjun JIA
Author Information
1. 陕西中医药大学,陕西 咸阳 712046
- Publication Type:Journal Article
- Keywords:
coronary computed tomography angiography;
snapshot freeze technology;
heart rate
- From:
Journal of Practical Radiology
2025;41(11):1882-1885
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the impact of new-generation snapshot freeze(NG SSF)combined with wide body detector on the image quality and diagnosability of multi-temporal coronary computed tomography angiography(CCTA)in patients with free heart rhythm.Methods A retrospective study was conducted on 40 patients who underwent CT scans in 40％-80％cardiac cycles using Revolution APEX 256 row CT scanner to obtain CCTA scan data.For each original data,images were reconstructed both before and after the NG SSF(referred to as the STD group and the NG SSF group respectively)at the 45％phase,75％phase and the Smart Phase.Two cardiovascular imaging diagnosticians respectively scored the image quality of the three major coronary branches[left anterior descending(LAD),left circumflex(LCX),and right coronary artery(RCA)]on the six groups of CCTA images using a Likert 4-point scale.Kappa test was used to analyze the consistency of image quality evaluation by two radiologists.The rank sum test was used to compare and analyze the difference of image quality between the two groups.Results There was good consistency between the two observers in the image quality scores of the six groups of reconstructed CCTA images(Kappa=0.807-1.000).NG SSF significantly improved the image quality of CCTA in all 3 phases(P＜0.05).The reconstructed images in the Smart Phase were superior to those in the 45％and 75％phases both before and after the NG SSF reconstruction,and the differences were statistically significant(P＜0.05).Conclusion NG SSF technology can significantly improves the image quality and diagnosability of CCTA in multi-temporal,and the Smart Phase image quality is generally better for achieving 100％diagnostic success rate with the combina-tion of a 16 cm wide body detector and rapid scanning.Therefore,it has the potential to enhance the confidence in single-phase CCTA scanning and the interpretability under the condition of arrhythmia.
