Technological trends in MRI


Fundamental limits:

Noise
Thermal contributions, body dominated

Gradient oscillation causes nerve stimulation
Remedy: Short dedicated gradient coils

RF causes body heating
Increases with field
Remedy: Special excitation schemes

Magnetic field may give biological effects above 10 Tesla
3 Tesla is current Danish maximum

Patient
Tends to leave after an hour

Limits must be acknowledged. Leaves plenty of room for creativity....