Study on the value of 256-row wide-body detector CT and CTA scan combined with "double low" in the typing diagnosis of patients with aortic dissection
安波 1于国政 1张俊勇 1张翔
扫码查看
点击上方二维码区域，可以放大扫码查看
作者信息
1. 烟台市烟台山医院放射科，烟台 264001
折叠
摘要
研究256排宽体探测器计算机断层扫描（CT）与CT血管造影（CTA）扫描结合"双低"在主动脉夹层（AD）患者分型诊断中的价值。研究发现双低组患者在冠状动脉各节段的信噪比（SNR）、图像优良指数（FOM）以及右冠状动脉对比信噪比（CNR）明显高于常规组，剂量长度乘积（DLP）、容积CT剂量指数（CTDIvol）、有效辐射剂量（ED ssde）、总碘量以及碘注入率均明显低于常规组，特异性以及准确率高于常规检查（P<0.05）。256排宽体探测器CT与CTA扫描结合"双低"可准确诊断AD分型，且在降低辐射剂量的同时保证了图片质量，便于临床诊断。 To investigate the value of 256 row wide body detector computed tomography (CT) combined with CT angiography (CTA) scanning in the diagnosis of aortic dissection (AD) patients with "double low" classification. The signal-to-noise ratio (SNR) and figure of merit (FOM) of each segment of coronary artery and the contrast signal to noise ratio (CNR) of right coronary artery in the double low group were significantly higher than those in the conventional group. dose-length product (DLP), CT dose index volume (CTDIvol), effective dose ssde (ED ssde), total iodine content and iodine injection rate were significantly lower than those in conventional group, and the sensitivity, specificity and accuracy were higher than those in conventional group ( P<0.05). 256-row wide-body detector CT and CTA scan combined with "double low" can accurately diagnose AD type, and can reduce radiation dose while ensuring picture quality, which is convenient for clinical diagnosis and analysis.
Abstract
To investigate the value of 256 row wide body detector computed tomography (CT) combined with CT angiography (CTA) scanning in the diagnosis of aortic dissection (AD) patients with "double low" classification. The signal-to-noise ratio (SNR) and figure of merit (FOM) of each segment of coronary artery and the contrast signal to noise ratio (CNR) of right coronary artery in the double low group were significantly higher than those in the conventional group. dose-length product (DLP), CT dose index volume (CTDIvol), effective dose ssde (ED ssde), total iodine content and iodine injection rate were significantly lower than those in conventional group, and the sensitivity, specificity and accuracy were higher than those in conventional group ( P<0.05). 256-row wide-body detector CT and CTA scan combined with "double low" can accurately diagnose AD type, and can reduce radiation dose while ensuring picture quality, which is convenient for clinical diagnosis and analysis.
万方数据