656 / 1694
1D MRI, Navigator echos (NE)
15 ms per acquisition
Time
1D MRI signal
• In diagnostics used to
track/gate respiration
• Imaging stack is moved
according to NE signal
• Diaphragm monitored
• Can be positioned
anywhere in any
orientation
Monitoring breathing at superior side of liver
Bas RaayMakers
ESTRO IGRT 2017