Skip to main content

Table 3 Interstudy repeatability of MBF measurements – by slice and coronary artery territory

From: Fully automated, inline quantification of myocardial blood flow with cardiovascular magnetic resonance: repeatability of measurements in healthy subjects

  Test 1
ml/g/min
Test 2
ml/g/min
Difference in mean ml/g/min p RC RC (%) CV (%) ICC
Rest
 Global 0.64 ±0.13 0.64 ±0.15 0.004 ±0.10 0.8 0.20 31.5 11.3 0.74
 Basal 0.66 ±0.14 0.67 ±0.16 0.015 ±0.13 0.46 0.25 37.7 13.6 0.65
 Mid 0.64 ±0.14 0.64 ±0.15 −0.003 ±0.10 0.87 0.20 31.0 11.2 0.76
 Apex 0.60 ±0.13 0.60 ±0.15 −0.003 ±0.10 0.86 0.20 33.4 11.5 0.73
P 0.13 0.089        
 LAD 0.69 ±0.16 0.68 ±0.16 −0.003 ±0.11 0.86 0.22 32.2 11.7 0.75
 Cx 0.60 ±0.13 0.60 ±0.14 0.005 ±0.11 0.74 0.20 34.0 11.8 0.70
 RCA 0.61 ±0.12 0.62 ±0.15 0.01 ±0.11 0.59 0.22 35.6 12.6 0.66
P 0.01* 0.04*        
Stress
 Global 2.71 ±0.61 2.55 ±0.57 −0.161 ±0.43 0.12 0.87 33.1 12.2 0.72
 Basal 3.01 ±0.80 2.80 ±0.74 −0.209 ±0.51 0.09 1.05 36.1 13.2 0.76
 Mid 2.48 ±0.55 2.39 ±0.51 −0.092 ±0.44 0.38 0.86 35.4 13.4 0.66
 Apex 2.62 ±0.65 2.42 ±0.56 −0.201 ±0.62 0.17 1.24 49.2 16.3 0.48
P 0.05 0.07        
 LAD 2.79 ±0.61 2.62 ±0.55 −0.167 ±0.39 0.08 0.82 30.3 10.8 0.75
 Cx 2.69 ±0.61 2.51 ±0.66 −0.180 ±0.47 0.12 0.97 37.3 15.4 0.71
 RCA 2.53 ±0.61 2.44 ±0.56 −0.096 ±0.47 0.39 0.92 37.0 13.6 0.68
P 0.442 0.629        
MPR
 Global 4.24 ±0.69 3.73 ±0.76 −0.214 ±0.76 0.25 1.46 36.4 13.3 0.46
 Basal 4.53 ±0.90 4.27 ±1.00 −0.262 ±0.89 0.23 1.78 40.4 15.3 0.55
 Mid 3.84 ±0.70 3.73 ±0.66 −0.113 ±0.83 0.57 1.60 42.4 15.5 0.26
 Apex 4.42 ±0.90 4.12 ±0.76 −0.293 ±1.04 0.25 2.06 48.1 16.0 0.30
p 0.047* 0.130        
 LAD 3.96 ±0.58 3.83 ±0.81 −0.128 ±0.71 0.45 1.35 35.3 13.1 0.50
 Cx 4.47 ±0.93 4.14 ±0.93 −0.325 ±0.86 0.13 1.76 40.8 15.7 0.54
 RCA 4.06 ±0.76 3.91 ±0.66 −0.150 ±0.89 0.49 1.72 43.3 15.7 0.23
p 0.118 0.480        
  1. RC repeatability coefficient, RC (%)repeatability coefficient as percentage of the mean, CV within subject coefficient of variation, ICC intraclass correlation coefficient
  2. p – level of significance using Student’s T-test
  3. *=significant at p < 0.05