Value of different MR techniques in clinical diagnosis of transient ischemic attack
Abstract：Objective To study the value of DWI,3D-TOF MRA and 3D-ASL in diagnosis of transient ischemic attack (TIA).Methods Fifty-three TIA patients served as a patient group and 30 age-matched healthy volunteers served as a control group in this study.They underwent T1WI,T2WI,T2-FLAIR,DWI,MRA and 3D-ASL.The findings in T1WI,T2WI,T2-FLAIR,DWI,MRA and 3D-ASL were statistically analyzed.Results DWI showed no high signals in the 83 subjects included in this study.The accuracy of MRA,ASL and their combination in diagnosis of TIA was 63.4％,71.1％ and 88.0％ respectively,with a sensitivity of 49.1％,58.5％ and 83.0％ respectively,and a specificity of 90.0％,93.3％ and 96.7％ respectively.The accuracy,sensitivity and specificity of combined 3D-TOF MRA and 3D-ASL were higher than those of either 3D-TOF MRA or 3D-ASL (P＜0.05).Of the 53 patients,24.5％ were positive for both 3D-TOF MRA and 3D-ASL,24.5％ were positive for 3D-TOF MRA and negative for 3D-ASL,34.0％ were negative for MRA and positive for 3D-ASL,17.0％ were negative for both 3D-TOF MRA and 3D-ASL.Conclusion 3D-ASL,3D-TOF MRA and DWI have their advantages and disadvantages,and can show the different characteristics of brain.Their combination can improve the diagnosis of TIA,follow the trail of changing condition,and can thus be used in diagnosis of TIA.
Keywords：magnetic resonance imagingimagingthree-dimensionalischemic attacktransientearly diagnosis
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 619-623 )