Assertion: mri | /r/Desires | magnetic field
Facets:
Source sentences:
text: MRI requires a magnetic field that is both strong and uniform to a few parts per million across the scan volume.
text: MRI requires a magnetic field that is both strong and uniform.
text: MRI requires a magnetic field that is both strong and uniform to a few parts per million across the scan volume.
text: MRI requires a magnetic field that is very uniform, or homogeneous with respect to strength.