摘要
目的高心率伴单发室性期前收缩(ventricular premature beats,VPBs)患者冠脉CT血管成像(coronary computed tomography angiography,CCTA)中自适应前瞻性心电门控的应用价值。方法对扫描前心电监测显示单发VPBs的高心率患者(80bpm≤HR≤120bpm)使用自适应前瞻性心电门控技术进行冠状动脉CTA扫描,其中CTA扫描过程中出现单发VPBs的患者纳入单发VPBs组,CTA扫描时未出现VPBs的患者纳入未出现VPBs组;对扫描前心律整齐的高心率患者(80bpm≤HR≤120bpm)使用回顾性心电门控技术进行扫描,CTA扫描时心律整齐者纳入对照组。比较单发VPBs组、未出现VPBs组和对照组之间的图像质量评分、可诊断率以及有效辐射剂量。结果单发VPBs组、未出现VPBs组和对照组的冠状动脉图像质量评分分别为(3.4±0.8)、(3.4±0.7)、(3.2±0.8)分。单发VPBs组、未出现VPBs组冠状动脉图像质量差异无统计学意义(P=0.989),单发VPBs组、未出现VPBs组冠状动脉图像质量高于对照组(P=0.000);单发VPBs组、未出现VPBs组和对照组的可诊断率的分别为91.5%、89.1%、87.6%,单发VPBs组可诊断率高于对照组(P=0.040),其余两组间可诊断率的差异无统计学意义(P>0.05);单发VPBs组、未出现VPBs组、对照组的有效辐射剂量分别为(3.4±0.8)、(3.4±0.7)、(10.5±2.1)mSv,单发VPBs组、未出现VPBs组低于对照组(P=0.000)。结论自适应前瞻性心电门控技术可以有效降低高心率伴单发VPBs患者在冠状动脉CTA检查中接受的辐射剂量,并且有利于提高冠状动脉图像质量。
Objective To investigate the application value of adapted prospective electrocardiogram（ECG）-trigge- ring coronary computed tomography angiography （CCTA） in patients with high heart rates and single ventricular prema- ture beats（VPBs）. Methods Adapted prospective ECG-triggering CCTA was performed on high heart rates patients with single VPBs （80 bpm≤HR≤120 bpm） during earlier scans. The patients displayed single VPBs during computed tomo- graphy angiography （CTA） scanning were involved into VPBs group, meanwhile, the patients without single VPBs dur- ing CTA scanning were collected in non-VPBs group. The high heart rates patients （80 bpm≤HR≤120 bpm） with nor- mal heart rhythm used retrospective ECCr-triggering CCTA scanning were collected in control group. The image quality scores, diagnostic rates and effective radiation doses of three groups were compared. Results The CCTA image quality scores of VPBs, non-VPBs and control group were （3. 4 ± 0. 8）, （3.4± 0. 7）, （3. 2± 0. 8） mSv, respectively. There was significantly different in the image quality scores between VPBs and non-VPBs group （P = 0. 989）, and the image quality scores of VFBs and non-VPBs group were higher than these of control group （P = 0. 000）. The diagnostic rates of VPBs, non-VPBs and control group were 91.5% ,89. 1% ,87.6%, respectively. The diagnostic rate of VPBs group was higher than that of non-VPBs group （P = 0. 040）, and no differences were found between non-VPBs and control group （P〉 0. 05）. The effective radiation doses of VPBs, non-VPBs and control group were （3.4 ±0. 8）, （3.4±0. 7） and （10. 5 ± 2. 1 ） mSv, respectively. The effective radiation doses of VPBs and non-VPBs group were lower than that of control group （P = 0. 000）. Conclusion Adapted prospective ECG-triggering CCTA can effectively reduce the receiving radiation doses of high heart rates patients with single ventricular premature beats, and also improve the image qualities.
出处
《华南国防医学杂志》
CAS
2017年第8期522-526,共5页
Military Medical Journal of South China
