【摘要】：目的探討128層螺旋CT血管成像及后處理技術(shù)在主動脈夾層(aortic dissection,AD)診斷中的價值。方法疑診AD患者78例,均行128層螺旋CT血管成像檢查,進行容積再現(xiàn)技術(shù)(volume rendering technique,VRT)、自由切割成像、多平面重組(multiplanar reformation,MPR)、曲面重建(curved planar reformation,CPR)及最大密度投影(maximum intensity projection,MIP)等后處理。對AD患者行Stanford分型和DeBakey分型,比較動靜脈期AD真假腔CT值,及后處理技術(shù)對AD內(nèi)膜破口的顯示率。結(jié)果 128層螺旋CT血管成像檢出AD患者59例,Stanford分型A型21例、B型38例,DeBakey分型Ⅰ型13例、Ⅱ型8例、Ⅲ型38例;動脈期時AD真腔CT值[(257.37±51.79)Hu]高于假腔[(225.76±50.26)Hu],靜脈期時AD真腔CT值[(157.39±59.56)Hu]低于假腔[(164.54±57.35)Hu],差異均有統(tǒng)計學意義(P0.05);自由切割成像+軸位對內(nèi)膜初始破口的顯示率為93.22%、自由切割成像為89.83%、CPR為83.05%、MPR為81.36%、軸位為76.27%,明顯高于VRT(35.59%)和MIP(13.56%),差異有統(tǒng)計學意義(P0.05)。結(jié)論 128層螺旋CT血管成像是術(shù)前診斷AD及對AD作出準確分型的可靠影像學檢查方法,但其不同后處理技術(shù)各有優(yōu)缺點,對內(nèi)膜初始破口的顯示率不同。
[Abstract]:Objective to evaluate the value of 128-slice spiral CT angiography and postprocessing in the diagnosis of aortic dissection AD. Methods Seventy-eight patients with suspected AD underwent 128-slice spiral CT angiography, (volume rendering technique (VRT), free cutting, multiplanar reformation (MPR), curved surface reconstruction of (curved planar reformation (curved planar) and maximum density projection (maximum intensity). Stanford classification and DeBakey classification were performed in AD patients to compare the CT value of true and false lumen of AD in arteriovenous phase and the display rate of AD intimal rupture by post-processing technique. Results Fifty-nine AD patients were diagnosed by 128-slice spiral CT angiography. Among them, there were 21 cases with type A and 38 cases with type B, 13 cases with type 鈪，

本文編號：2199002