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