radiofrequency pulse

ra·di·o·fre·quen·cy pulse

in nuclear magnetic resonance, a short electromagnetic signal used to change the direction of the magnetic field. See: sequence pulse.

radiofrequency pulse

a short burst of electromagnetic radiation in the radiofrequency range, used in combination with magnetic gradients to generate a magnetic resonance image.
References in periodicals archive ?
In the process, the nuclear magnetization of amine (NH2) creatine protons is saturated by a radiofrequency pulse from the MRI.
Nerves in the wall of the renal artery are ablated by applying radiofrequency pulses to the renal arteries.
The NMR signal can subsequently be obtained by chemically breaking the molecular symmetry or by applying radiofrequency pulses.
5T MRI scanner using a standard quadrature extremity coil/head coil for both transmission of radiofrequency pulses and signal reception.
In order not to exceed SAR limits at 3T, MRI pulse sequences are often modified to reduce power deposition either by decreasing the amplitude of the radiofrequency pulses and compensating by extending their duration (thus keeping the same flip angle) or by simply decreasing the flip angle of the radiofrequency pulses.
Magnetic resonance and radiofrequency pulses are not associated with cancer or fetal malformations, Dr.
A combination of radiofrequency pulses and quiescent periods guided the molecule into a final state that depends on the arrangement of spins caused by the initial message interaction.

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