scholarly journals Stenosis detection in failing hemodialysis access fistulas and grafts: Comparison of color Doppler ultrasonography, contrast-enhanced magnetic resonance angiography, and digital subtraction angiography

2005 ◽  
Vol 42 (4) ◽  
pp. 739-746 ◽  
Author(s):  
Cornelis Doelman ◽  
Lucien E.M. Duijm ◽  
Ylian S. Liem ◽  
Clemence L. Froger ◽  
Alexander V. Tielbeek ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Digital Subtraction Angiography ◽  
Doppler Ultrasonography ◽  
Color Doppler ◽  
Color Doppler Ultrasonography ◽  
Digital Subtraction ◽  
Hemodialysis Access ◽  
Contrast Enhanced ◽  
Stenosis Detection

scholarly journals Diagnosis of supra-aortic artery stenosis: comparison of magnetic resonance angiography imaging methods with conventional digital subtraction angiography

2018 ◽  
Vol 6 (5) ◽  
pp. 1509
Author(s):  
Hale Aydin ◽  
Agildere A. Muhtesem
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Digital Subtraction Angiography ◽  
Maximum Intensity Projection ◽  
Reconstruction Method ◽  
Digital Subtraction ◽  
Total Occlusion ◽  
Contrast Enhanced ◽  
Aortic Artery ◽  
The Individual

Background: The aim of this study was to compare conventional digital subtraction angiography (DSA) with the multi-planar reformation (MPR) and maximum intensity projection (MIP) reconstruction of servical magnetic resonance angiography (MRA) in terms of detecting supra-aortic artery stenoses.Methods: In the study, 21 patients who had underwent 3D MRA and conventional DSA were retrospectively assessed. Axial MPR, coronal MIP reconstruction and contrast enhanced 3D MRA subtraction images of a total of 333 artery segments were independently assessed by 2 separate radiologists. Conventional DSA results were accepted as gold standard results. The overall and individual Kappa values of all methods were calculated.Results: Results of the conventional DSA analysis indicated total occlusion in 9 (2.7%), severe stenosis in 16 (4.8%), moderate stenosis in 90 (27.1%), mild stenosis in 105 (31.5%) and no stenosis in 113 (33.9%) arteries. While the k values of all methods were high which demonstrated strong relationships with the DSA method; the coronal MIP reconstruction method was found to be superior to other methods. The 3D MRA subtraction method did not yield better results in any of the individual comparisons.Conclusions: Our results indicate that the coronal MIP reconstruction method has higher correlation with conventional DSA results compared to the other two methods and may be used as an accurate first-line diagnostic method for supra-aortic artery stenoses.

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