Fig. 1From: Evaluation of data-driven respiratory gating waveforms for clinical PET imagingRelationship between R and motion amplitude found for a phantom performing respiratory-like motions. The maximum displacement was 30 mm, corresponding to a 15-mm amplitude. Lines of best fit are shown (using third-order polynomials). Results are presented for scan durations equal to 180 s, 90 s and 45 s. Error bars represent standard errors on the meanBack to article page