Figure 8.

a: The distributions of gated shot TR was distributed around the R–R interval (here $\approx 170 \text{ms}$), with a small number of missed triggers (at $\approx 350 \text{ms}$). b: As expected for a stochastic waiting process, the subsequent distribution of image TR was described by a gamma distribution (fit), with a large spread in values (min/max TR/image $=1.966$ s $/\hspace{0.17em}\hspace{0.17em}2.418$ s). c: The error between the expected ( $N\times$ R–R interval) and measured scan times becomes progressively worse as time increases.