Clinical application of snapshot freeze technique during coronary angiography in children with high heart rate
10.13929/j.1003-3289.201810009
- Author:
Haoyan LI
1
Author Information
1. Department of Imaging Center, National Center for Children's Health, Beijing Children's Hospital, Capital Medical University
- Publication Type:Journal Article
- Keywords:
Angiography;
Child;
Coronary artery disease;
Tomography;
X-ray computed
- From:
Chinese Journal of Medical Imaging Technology
2019;35(4):596-600
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the value of snapshot freeze (SSF) technique in coronary CTA (CCTA) in pediatric patients with high heart rates. Methods Totally 50 children whose heart rate were ≥ 75 times per minute were selected and underwent CCTA. The raw data were reconstructed into 4 groups. The best phase in group A was manually selected without SSF technique, in group B was manually selected with SSF, in group C was automatically selected (Smart Phase) without SSF, while in group D was automatically selected with SSF. The image quality scores and diagnostic rates of coronary artery were compared among 4 groups. Results Totally 675 branches were assessed in 50 patients. There was no significant difference of left circumflex artery (LCX) image quality scores nor diagnostic rates among 4 groups (both P>0.05). There were significant differences of right coronary artery (RCA), left anterior descending (LAD), total coronary artery scores and diagnostic rates (all P<0.05). Significant differences of RCA and coronary artery scores were found (both P<0.01), while no significant difference of LAD scores was detected (P=0.08) between group A and B. There were significant differences of LAD and coronary artery diagnostic rates (both P<0.01), while no significant difference of RCA diagnostic rates was found (P=0.08) between group A and B. Significant differences of RCA, LAD and coronary artery scores and diagnostic rates were observed between group C and D (all P<0.05). Conclusion SSF technique can improve image quality of CCTA in children with high heart rate.
