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Table 2 EEP-EIP, EED, breathing cycle, RR, the duration within 5 mm gating window per minute increased, the duration within 5 mm gating window per respiration and scan efficiency before and after fitting the BELT

From: Impact of an abdominal belt on breathing patterns and scan efficiency in whole-heart coronary magnetic resonance angiography: comparison between the UK and Japan

   pre BELT p value
EIP-EEP (mm) All 14.9 ± 6.2 9.4 ± 3.8 < 0.001
  UK 15.9 ± 6.0 9.7 ± 3.1 0.001
  Japan 14.0 ± 6.4 9.1 ± 4.6 0.001
EED (sec) All 1.44 ± 0.78 1.42 ± 0.59 0.905
  UK 1.49 ± 0.91 1.40 ± 0.65 0.451
  Japan 1.39 ± 0.67 1.44 ± 0.54 0.410
Breathing cycle (sec) All 6.71 ± 2.47 5.83 ± 2.07 0.002
  UK 6.93 ± 2.50 6.16 ± 2.28 0.022
  Japan 6.48 ± 2.50 5.50 ± 1.85 0.041
Respiratory rate (min-1) All 10.0 ± 3.1 11.2 ± 3.0 0.003
  UK 9.5 ± 2.8 10.7 ± 2.8 0.038
  Japan 10.4 ± 3.5 11.8 ± 3.1 0.036
Duration within 5 mm gating window per respiration (sec) All 3.2 ± 1.5 3.4 ± 1.4 0.120
  UK 3.3 ± 1.7 3.6 ± 1.9 0.266
  Japan 3.0 ± 1.3 3.2 ± 0.9 0.534
Duration within 5 mm gating window per minute (sec) All 27.8 ± 7.8 35.5 ± 1.8 < 0.001
  UK 27.8 ± 8.5 34.3 ± 9.6 0.020
  Japan 27.8 ± 7.3 36.6 ± 10.6 0.005
Scan efficiency using 5 mm gating window (%) All 45.3 ± 11.4 58.6 ± 17.0 < 0.001
  UK 44.2 ± 10.8 55.7 ± 16.7 0.004
  Japan 46.3 ± 32.2 61.0 ± 17.6 0.001