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Table 1 mean +/- SD of paired differences and intraclass correlation coefficients (ICCs) for mean velocity (MV), peak systolic velocity (PSV), peak diastolic velocity (PDV), time to peak systolic velocity (TPSV) and time to peak diastolic velocity (TPDV). Inter breath-hold data and a comparison of manual and automatic analysis are presented for each observer (obs 1 and obs 2). Flow differences between manual and automatic processing (* p < .001) were due to differences in defining the cross-sectional area of the artery.

From: Inter breath-hold reproducibility of temporal patterns of coronary artery blood flow

  MANUAL VERSUS AUTOMATIC ANALYSIS INTER BREATH-HOLD REPRODUCIBILITY
  mean +/- SD differences ICC mean +/- SD differences ICC
  Obs 1 Obs 2 Obs 1 Obs 2 Obs 1 Obs 2 Obs 1 Obs 2
MV (mm/s) -0.9 +/- 9.8 -4.6+/-9.7 .97 .98 -2.4 +/-6.9 1.7+/-7.4 .98 .98
flow (mm3/s) -175+/-184* -251+/-214* .90 .86 -32.6+/- 80.8 14.1+/91.0 .99 .99
SPV (mm/s) -1.7+/-17 1.5+/-12.2 .99 .99 1.7+/-15.8 -11.8+/-46.0 .99 .92
TSPV (ms) 5.5+/-19.4 2.8+/-10.8 .97 .99 -4.4+/-22.1 -2.7+/-20.1 .99 .97
DPV (mm/s) -1.3+/-24.7 -4.3+/-30.0 .98 .96 -3.5+/-11.6 2.9+/-21.4 .99 .98
TDPV (ms) -3.0+/-50.2 -12.4+/-65.0 .93 .89 -0.1+/49.3 -20+/-70.3 .93 .87