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Table 1 Overall comparison scores for both sequences.

From: Evaluation and comparison of ECG-gated techniques at 1.5 T for contrast enhanced MR angiography of the thoracic aorta

Categories Standard (S-MRA) New (Z-MRA) P value
Average scan time in seconds 52.4±3.5 17.9±1.4 <0.001
Diagnostic Confidence (higher better) 4.83±0.30 4.52±0.46 <0.001
Vascular contrast (higher better) 3.55±0.72 4.51±0.61 <0.001
Artifact (higher better) 3.97±0.89 3.80±1.21 <0.001
Overall Image Quality 3.86±0.88 3.85±1.20 0.867
Image Quality (annulus) 3.96±0.55 3.69±0.61 0.018
Image Quality (sinus) 3.96±0.53 3.58±0.70 0.007
Image Quality (STJ) 4.11±0.51 3.74±0.77 0.010
Image Quality (asc ao) 4.32±0.58 4.24±0.61 0.51
Image Quality (arch) 4.07±0.54 4.74±0.45 <0.001
Image Quality (desc ao) 4.46±0.52 4.88±0.36 <0.001
  1. STJ (sinotubular junction), asc ao (ascending aorta), desc ao (descending aorta).
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