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Table 2 Low-dose peak acquisition simulation as compared to ideal peak acquisition

From: Timing optimization of low-dose first-pass analysis dynamic CT myocardial perfusion measurement: validation in a swine model

Protocol (n = 98) Cardiac cycle difference from peak (beats, mean) p value (comparison with the ideal peak) RMSE (beats)
\( \frac{{\mathrm{T}}_{\mathrm{i}}}{2} \)+ 0.5 s -0.56 ± 1.79 0.004 1.87
\( \frac{{\mathrm{T}}_{\mathrm{i}}}{2} \) + 1.0 s 0.13 ± 1.85 0.497 1.84
\( \frac{{\mathrm{T}}_{\mathrm{i}}}{2} \) + 1.5 s 0.86 ± 1.97 0.000 2.14
  1. n number of measurements made in the 28 animals, \( \frac{T_i}{2} \) one half of the contrast injection time in seconds, RMSE root-mean-square error