Skip to main content

Table 1 Percentage errors for peak and time to peak S, D and AS velocities for prospective and retrospective gating

From: Retrospective gating leads to more accurate velocity measurements than prospective gating in spiral phase velocity mapping

  5% Pro 10% Pro 15% Pro 20% Pro 5% Retro 10% Retro 15% Retro 20% Retro
Peak S 0.1 -0.0 -0.0 0.3 0.0 -0.2 -0.2 0.8
Peak D 4.6 4.9 21.1 39.2 1.7 2.7 8.3 15.5
Peak AS 28.6 34.1 44.3 52.6 0.5 0.6 0.6 1.1
Time S 0.0 0.0 0.0 0.0 -4.6 0.0 0.0 -9.5
Time D -0.5 -0.5 4.1 8.6 -2.9 0.0 -3.7 -5.7
Time AS 1.9 6.5 15.9 18.2 -0.3 0.0 0.0 -0.5
  1. Error is calculated as percentage difference between measured values with variation and measured value with no variation. Positive error represents underestimation of peak value.