Carmen Sebastià, Alejandro D

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Presentation transcript:

Accuracy of unenhanced magnetic resonance angiography for the assessment of renal artery stenosis Carmen Sebastià, Alejandro D. Sotomayor, Blanca Paño, Rafael Salvador, Marta Burrel, Albert Botey, Carlos Nicolau European Journal of Radiology Open Volume 3, Pages 200-206 (January 2016) DOI: 10.1016/j.ejro.2016.07.003 Copyright © 2016 The Authors Terms and Conditions

Fig. 1 Diagram of the flow of participants. European Journal of Radiology Open 2016 3, 200-206DOI: (10.1016/j.ejro.2016.07.003) Copyright © 2016 The Authors Terms and Conditions

Fig. 2 (a) CE-MRA and (b) U-MRA depicted normal renal arteries in MIP axial reformatted images. Visualization of intraparenchymal arteries is easier by U-MRA because there is no parenchymal enhancement associated. Note that this coronal view is not achievable with DSA projections, this is one of the advantatges of MRA vs DSA. European Journal of Radiology Open 2016 3, 200-206DOI: (10.1016/j.ejro.2016.07.003) Copyright © 2016 The Authors Terms and Conditions

Fig. 3 (a) DSA and (B) U MRA MIP refformated image in a coronal view shows left main renal artery stenosis greater than 50%, balloon dilatation was performed in this case. European Journal of Radiology Open 2016 3, 200-206DOI: (10.1016/j.ejro.2016.07.003) Copyright © 2016 The Authors Terms and Conditions

Fig. 4 (a) CE-MRA and (b) U-MRA depicts in a coronal view bilateral renal arteries FMD with more than 50% renal artery stenosis in the left renal artery (arrows), congruent between the two tests, and U-MRA pitfall in the right renal artery considering and hemodinamically significant artery by CE-MRA as non significant (thin arrows). Note a low aortic right accessory renal artery (arrowhead) in CE-MRA not seen in U-MRA. European Journal of Radiology Open 2016 3, 200-206DOI: (10.1016/j.ejro.2016.07.003) Copyright © 2016 The Authors Terms and Conditions

Fig. 5 (a) DSA and (b) U-MRA of a suboclusive left renal artery stenosis (arrows). Note that by U-MRA seems totally occlusive, although few distal intraparenchymal arteries are seen. European Journal of Radiology Open 2016 3, 200-206DOI: (10.1016/j.ejro.2016.07.003) Copyright © 2016 The Authors Terms and Conditions