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Table 1 Image quality was compared between CTA and MRA. 1 = poor or nondiagnostic arterial display; 2 = fair arterial display and delineation of the arterial structures with detection of lesions still possible; 3 = good arterial display without impaired delineation of the vessel structures; 4 = excellent arterial display with sharp delineation of the arteries throughout their length

From: The diagnostic value of non-contrast enhanced quiescent interval single shot (QISS) magnetic resonance angiography at 3T for lower extremity peripheral arterial disease, in comparison to CT angiography

  Reader 1 Reader 2
  CTA MRA P CTA MRA P
Distal abdominal aorta 3.91 ± 0.30 3.72 ± 0.46 0.034 3.94 ± 0.25 3.63 ± 0.49 0.002
Common iliac artery 3.86 ± 0.43 3.61 ± 0.55 0.003 3.88 ± 0.38 3.66 ± 0.48 0.002
External iliac artey 3.81 ± 0.50 3.55 ± 0.53 0.005 3.86 ± 0.39 3.64 ± 0.52 0.002
Internal iliac artery 3.63 ± 0.55 3.58 ± 0.56 0.554 3.64 ± 0.55 3.64 ± 0.48 0.981
Femoral artery 3.78 ± 0.49 3.67 ± 0.47 0.217 3.78 ± 0.55 3.61 ± 0.52 0.081
Femoral profound artery 3.97 ± 0.18 3.75 ± 0.44 <0.001 3.94 ± 0.24 3.77 ± 0.43 0.002
Popliteal artery 3.84 ± 0.41 3.75 ± 0.53 0.206 3.86 ± 0.39 3.78 ± 0.45 0.225
Anterior tibial artery 3.70 ± 0.46 3.78 ± 0.45 0.251 3.73 ± 0.45 3.80 ± 0.44 0.433
Posterior tibial artery 3.73 ± 0.45 3.80 ± 0.44 0.371 3.78 ± 0.42 3.80 ± 0.44 0.827
Peroneal artery 3.78 ± 0.42 3.81 ± 0.39 0.593 3.81 ± 0.43 3.84 ± 0.37 0.655
Total 3.80 ± 0.44 3.70 ± 0.49 <0.001 3.82 ± 0.42 3.72 ± 0.47 <0.001
Heavily calcified segment 3.13 ± 0.77 3.68 ± 0.59 <0.001 3.22 ± 0.68 3.65 ± 0.60 <0.001
  1. CTA computed tomography angiography, MRA magnetic resonance angiography