Many devices use pulsed RF signals. The obvious ones are echo-ranging systems like radar. Additionally, nuclear magnetic resonance (NMR) spectrometers and magnetic resonance imaging (MRI) systems use ...

The precessing nuclei in turn generate an RF magnetic-field oscillation — the NMR signal. In almost all MRI experiments, the RF field is generated by a coil of wire — the RF coil 1 — and the ...

Magnetic resonance imaging (MRI) is one of the most commonly used tests ... This alignment (or magnetization) is next perturbed or disrupted by introduction of an external Radio Frequency (RF) energy.

However, the RF energy used in MRI can increase the electrical current ... producing heat that can damage tissues at the site where a stimulating signal is delivered. Even though the FDA has ...

Of all the high-tech medical gadgets we read about often, the Magnetic Resonance Imaging (MRI ... are then perturbed with a carefully tuned radio frequency pulse delivered via a large drive ...

Magnetic resonance imaging ... eschews physical RF shielding. Instead, the researchers used a “deep learning” algorithm trained to recognize and predict interference signals, which are ...

In the absence of RF shielding, the researchers used deep learning ... the scanner and inside the electronics cabinet to acquire EMI signals. During scanning, the EMI sensing coils and the MRI receive ...

But a study from the lab of McGovern associate investigator Alan Jasanoff, reported in the journal Science Advances, demonstrates that MRI signals produced by the new method are generated in large ...

A team of researchers affiliated with multiple institutions in the Republic of Korea has developed a new way to use magnetic resonance imaging (MRI ... of brain signals on millisecond timescales.

Scientists have found a way to decode a stream of words in the brain using MRI scans and artificial intelligence ... The sensors detect signals in areas involved in articulating words.