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Interobserver Agreement for the Interpretation of Contrast-Enhanced 3D MR Angiography and MDCT Angiography in Peripheral Arterial Disease

Rody Ouwendijk1, Marc C. J. M. Kock1, Karen Visser1, Peter M. T. Pattynama1, Michiel W. de Haan2 and Myriam G. M. Hunink1

1 Departments of Radiology and Epidemiology & Biostatistics, Erasmus Medical Center, Dr. Molewaterplein 50, Rm. Ee 2118, 3015 GE Rotterdam, The Netherlands.
2 Department of Radiology, Maastricht University Hospital, Maastricht, The Netherlands.



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  		Fig. 1 —Flow diagram illustrates reasons for exclusion, random assignment of patients to diagnostic test groups, and diagnostic tests that patients actually underwent. DSA = digital subtraction angiography, MRA = contrast-enhanced 3D MR angiography, CTA = MDCT angiography.

 


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  		Fig. 2A —Images in 68-year-old man with claudication of right leg and critical ischemia of left leg. Volume maximum-intensity-projection image (anteroposterior view) of MDCT angiography performed with only bone segmentation. There are extensive vessel wall calcifications.

 


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  		Fig. 2B —Images in 68-year-old man with claudication of right leg and critical ischemia of left leg. Volume maximum-intensity-projection image (anteroposterior view) of MDCT angiography with segmentation of both bone and vessel wall calcifications. There seems to be arterial stenosis (arrow) just distal to right iliac bifurcation.

 


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  		Fig. 2C —Images in 68-year-old man with claudication of right leg and critical ischemia of left leg. Even on transverse source images of MDCT angiography like this one, it was difficult to assess degree of stenosis due to vessel wall calcifications.

 

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