摘要
目的探讨双源CT胸痛三联症联合腹部CT血管造影(CTA)检查在主动脉夹层诊断中的临床价值。方法对25例疑似主动脉夹层患者行双源CT胸痛三联症联合腹部CTA检查,所有患者原始数据应用多平面重建、容积再现、曲面重建、最大密度投影等方法进行主动脉成像,由2名有经验的放射科医师进行诊断。根据结果分为夹层组(12例)及非夹层组(13例),分别进行图像质量评价。夹层组各例分别测取第1破口周围及双肾动脉开口水平真、假腔主动脉平均强化值。结果夹层组12例中按DeBakey分型,Ⅰ型6例、Ⅱ型2例、Ⅲ型4例,图像质量优为83.3%、良为16.7%,均能满足诊断要求,非夹层组图像质量优为100%。夹层组第1破口周围真腔与双肾动脉水平真腔平均强化值比较,差异无统计学意义。结论双源CT胸痛三联症联合腹部CTA检查方法稳定可靠,在主动脉夹层诊断中具有较高的临床应用价值,是一种无创、准确、快速的检查方法。
Objective To explore the clinical value of ＂triple-rule-out＂protocols using dual-source computed tomography for aortic dissection （AD） assessment.Methods Totally 25 patients suspecting of suffering from AD were examined on a dual-source computed tomography scanner.Two-dimensional and three-dimensional reconstruction was performed in all patients by means of multiplanar reconstruction,curved planar reformation,maximum intensity projection,and volume rendering.All images were read by two experienced radiologists in consensus.All patients were divided into AD group （n=12） and NO AD group （n=13）,The average Hounsfield unit values of true and false lumen were compared between superior of the aortic around the first endoleak and inferior of the aortic around renal artery.Results In AD group,there were 6 patients with DeBakey type Ⅰ,2 patients with DeBakey typeⅡ,and 4 patients with DeBakey type Ⅲ.The image quality was rated on a 3-point scale as ＂excellent＂ in 10 patients （83.3%） and ＂good＂ in 2 patients （16.7%）.All cases was fully evaluable in NO AD group.The average Hounsfield unit values of true lumen between superior of the aortic around the first endoleak and inferior of the aortic around renal artery showed no significant difference between AD and NO AD group.Conclusion Dual-source computed tomography offers a non-invasive,accurate,and rapid way to evaluate AD.
出处
《中国医学科学院学报》
CAS
CSCD
北大核心
2010年第6期666-670,714,共6页
Acta Academiae Medicinae Sinicae
关键词
主动脉夹层
双源CT
图像质量
aortic dissection
dual-source computed tomography
image quality
