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US 5,296,809 AGranted
Magnetic resonance experiment and apparatus
OwnerTimothy P. L. Roberts, Thomas A. Carpenter +1inventors
InventorsTimothy P. L. Roberts, Thomas A. Carpenter, Laurence D. Hall
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Abstract
A magnetic resonance experiment is described in which a sample under test is subjected to a sequence of gradient magnetic fields and RF pulses and resultant pulse echoes are monitored. At least one of the RF pulses comprises a prefocused, phase-modulated, time-asymmetric RF pulse.
Claims7
Magnetic resonance apparatus comprising magnetic field generating means for subjecting a sample under test to a sequence of magnetic field gradients;
- an RF pulse generator;
- and means for monitoring resultant pulse echoes characterized int hat the RF pulse generator generates a prefocused, phase-modulated, time-asymmetric RF pulse.
A method for obtaining a magnetic resonance image of a sample, comprising
- subjecting the sample to a sequence of gradient magnetic fields and RF pulses, and
- monitoring the resultant pulse echoes, wherein at least one of the RF pulses is a prefocused, phase-modulated, time-asymmetric RF pulse.
Dependencies are inferred from the claim text.