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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).