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Table 1 Proportion of simulations that had α 0 = 0 or α 0 ≠ 0 identified by NLSA and SA

From: Assessing radiotracer kinetics in the Langendorff perfused heart

Simulated scenario NLSA performance SA performance
SNR = 60 SNR = 120 SNR = 60 SNR = 120
α 0 = 0 (%) α 0 ≠ 0 (%) Accuracy (%) α 0 = 0 (%) α 0 ≠ 0 (%) Accuracy (%) α 0 = 0 (%) α 0 ≠ 0 (%) Accuracy (%) α 0 = 0 (%) α 0 ≠ 0 (%) Accuracy (%)
Tri-exponential             
  No trapping (α 0 = 0) 100 - 100 100 - 100 21 79 21 14 86 14
  Trapping 1 (α 0 = 0.006) 10 90 90 6 94 94 6 94 94 10 90 90
  Trapping 2 (α 0 = 0.06) - 100 100 - 100 100 - 100 100 - 100 100
  Trapping 3 (α 0 = 0.2) - 100 100 - 100 100 - 100 100 - 100 100
  Trapping 4 (α 0 = 0.6) - 100 100 - 100 100 - 100 100 - 100 100
Bi-exponential             
  No trapping (α 0 = 0) 100 - 100 100 - 100 14 86 14 2 98 2
  Trapping 1 (α 0 = 0.006) 23 77 77 13 87 87 4 96 96 - 100 100
  Trapping 2 (α 0 = 0.06) 6 94 94 2 98 98 - 100 100 - 100 100
  Trapping 3 (α 0 = 0.2) - 100 100 - 100 100 - 100 100 - 100 100
  Trapping 4 (α 0 = 0.6) - 100 100 - 100 100 - 100 100 - 100 100
  1. α 0 indicates the tracer trapping. Units are in min-1.