Impact of irregular waveforms on data-driven respiratory gated PET/CT images processed using MotionFree algorithm

Data-driven gated positron emission tomography/computed tomography for radiotherapy

“…Respiratory gating was activated prospectively once the ratio exceeded a set threshold during data acquisition or activated retrospectively after data acquisition [30] . This approach was validated with hardware gating [54] . PCA was less impacted by noisy data than spectral analysis or COD [55] .…”