Figure 2

Filtered cardiac and respiratory motion signals from the raw motion signal from k-space center. Trigger points calculated from self-gating signals are marked with x. Dotted vertical lines represent the wired ECG trigger points acquired for reference (upper panel). The respiratory trace obtained in real-time is compared with respiratory belt signal (lower panel). Note that the respiratory signal exhibits a shift due to the averaging filter. Additionally the adaptive threshold used for gating is shown as slash dotted line.