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.
A fit-to-theory program was used to measure temperature and reactant gas concentration, as a function of radiofrequency pulse and power using Coherent anti-Stokes Raman Spectroscopy (CARS).
In addition to the time of flight effect contributing to the bright blood signal, blood remains virtually unaffected by the additional radiofrequency pulse because blood has a very low rate of magnetization transfer.
Like standard MRI, qMRI uses magnetic fields and sequences of radiofrequency pulses to measure changes in the hydrogen atoms in our bodies different tissues produce different signals.
Nerves in the wall of the renal artery are ablated through the application of radiofrequency pulses to the renal arteries.
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.
This imaging method uses strong magnetic fields, radiofrequency pulses and computers to produce detailed, cross-sectional images of the body.
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.
The new quantum computer contains five qubits(1) -- five fluorine atoms within a molecule specially designed so the fluorine nuclei's "spins" can interact with each other as qubits, be programmed by radiofrequency pulses and be detected by nuclear magnetic resonance instruments similar to those commonly used in hospitals and chemistry labs.

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