Triple-rule-out Computed Tomographic Angiography Using Adaptive Prospective ECG Triggering
10.3969/j.issn.1005-5185.2017.04.005
- VernacularTitle:前瞻性自适应性心电门控胸痛三联扫描模式的临床应用
- Author:
Xiaonan SHI
;
Gang WANG
;
Xingru LU
;
Qihong GUO
;
Zixian CHEN
;
Bin FANG
- Keywords:
Acute coronary syndrome;
Pulmonary embolism;
Aneurysm,dissecting;
Tomography,X-ray computed;
Coronary angiography;
Angiography;
Pulmonary artery;
Aortography;
Quality control;
Radiation dosage
- From:
Chinese Journal of Medical Imaging
2017;25(4):259-263
- CountryChina
- Language:Chinese
-
Abstract:
Purpose To evaluate the clinical value of triple-rule-out (TRO) computed tomographic angiography using adaptive prospective ECG triggering for chest pain patients.Materials and Methods Sixty patients with chest pain were prospectively collected and randomly divided into group A and group B:group A (n=30) performed prospectively gated axial scan and group B (n=30) performed retrospectively gated helical scan.The vascular density,noise and muscle density of the vessels including aorta,pulmonary artery,coronary artery between the two groups were measured and analyzed.The vascular density/noise ratio,contrast noise ratio and effective dose (ED) between the two groups were calculated.The image quality and scanning radiation dose were compared between the two groups.Results There was no significant difference in the image quality of aorta,pulmonary artery and coronary artery between group A and group B (P＞0.05).The ED in group A was lower than that in group B [(5.90±2.10) mSv vs (11.31 ± 2.12) mSv,P＜0.01].Conclusion The technique of TRO computed tomographic angiography triggered by adaptive prospective ECG can significantly reduce the radiation dose while ensuring image quality.
