Improving coronary artery image quality in children with high heart rate by coronary artery snapshot freeze technique(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2021年第10期
- Page:
- 1237-1242
- Research Field:
- 医学影像物理
- Publishing date:
Info
- Title:
- Improving coronary artery image quality in children with high heart rate by coronary artery snapshot freeze technique
- Author(s):
- LI Haoyan1; 2; SUN Jihang2; PENG Yun2; LI Haiyun1
- 1. School of Biomedical Engineering, Capital Medical University, Beijing 100069, China 2. Imaging Center, Beijing Childrens Hospital, Capital Medical University, National Center for Childrens Health, Beijing 100045, China
- Keywords:
- Keywords: coronary artery disease children with high heart rate coronary artery snapshot freeze technique coronary CT angiography
- PACS:
- R318；R445.3
- DOI:
- DOI:10.3969/j.issn.1005-202X.2021.10.010
- Abstract:
- Abstract: Objective To explore whether the second generation of coronary artery snapshot freeze (SSF2) technique can improve the ability in recognizing coronary arteries in high heart rate children. Methods A total of 53 children whose heart rate were ≥75 times per minute, with an average age of (17.5±18.7) months and an average weight of (10.68±5.13) kg, were enrolled and underwent coronary CT angiography with a tube voltage of 80 or 100 kV, and the auto ECG gating technique was used to automatically select the exposure phase. The original data was reconstructed into 3 groups, namely group A (conventional images), group B (images reconstructed using SSF1 technique) and group C (images reconstructed using SSF2 technique). The image quality scores and diagnosable rates of coronary artery were compared among 3 groups. Results A total of 534 coronary artery branches in 53 patients were assessed. There were statistically significant differences in the image quality scores and diagnosable rates of right coronary artery, left anterior descending artery, coronary artery origin and coronary artery between groups B and C (all P<0.05). Although the differences in the image quality score of left circumflex artery (LCX) were statistically significant (P<0.05), the diagnosable rate of LCX was similar in groups B and C (P=0.05). No significant difference was found in the image quality scores of left anterior descending artery, LCX and coronary origin between groups A and B (P=0.07, 0.14, 0.43). Conclusion SSF2 technique can further improve the image quality of coronary CT angiography of children with high heart rate.
Last Update: 2021-10-29