Fig. 4

a Number of bed positions per patient with R greater than a set threshold, shown for R value thresholds between 1 and 20. b Total number of bed positions with R greater than the R value threshold, split by the score S assigned to the waveform from visual inspection of all bed positions in 157 examinations. Shown for R value thresholds between 1 and 20. For data in both figures, the acquisition duration per bed position was 240 s (4 min)