中国中西医结合影像学杂志Issue(2)：142-143,146,3.DOI:10.3969/j.issn.1672-0512.2014.02.011
MinDose技术在CT急性胸痛三联排查中的应用
Application of MinDose technique in triple-rule-out CT angiography (TRO-CTA) in patients with acute chest pain
王敏 1郭美玲 1李剑1
作者信息
- 1. 山东省济宁市第一人民医院CT室，山东济宁272111
- 折叠
摘要
Abstract
Objective:To explore the value of MinDose technique in triple-rule-out CT angiography (TRO-CTA) in patients who were with acute chest pain .Methods :Fifty patients with acute chest pain were randomly assigned to two different retrospectively ECG-gated TRO-CTA protocols :group A (regular group ,n=25) with the tube current reduced to 20% of the normal tube cur-rent outside the pulsing window and group B (low-dose group ,n=25) with the tube current reduced to 4% of the normal tube current outside the pulsing window (MinDose) .Subjective image quality was assessed by two observers in consensus using a four-point scale .Vascular attenuation of aorta and pulmonary artery were analyzed .Estimation of effective dose (ED) was per-formed on the basis of dose length product (DLP) .Image quality and radiation dose were compared with t-test between the two groups .Results:Subjective image quality was rated similar in both groups (3 .06 ± 0 .40 vs .2 .91 ± 0 .44 ,P>0 .05) .The effective dose of group A was significantly lower than group B ((6 .47 ± 1 .03)mSv vs .(7 .25 ± 1 .43)mSv ,P<0 .05) .Conclusions :MinD-ose technique in TRO-CTA can provide diagnostic image quality at reduced radiation dose in patients with chest pain .关键词
体层摄影术 ,X线计算机/胸痛/辐射剂量Key words
Tomography ,X-ray computed/Chest pain/Radiation dosage引用本文复制引用
王敏,郭美玲,李剑..MinDose技术在CT急性胸痛三联排查中的应用[J].中国中西医结合影像学杂志,2014,(2):142-143,146,3.
