Question

What is MRI noise and gaiting,explain

Answer 1

What is MRI noise?

MRI stands for Magnetic resonance imaging.

We know that, scanning will be done in the process of MRI.

Inside the scanner, there are coils that are made of metal.

Whenever electricity is passed through such metal coils, there will be magnetic field induced.

Due to pulsating electricity, the field will be varying randomly.

These cause random vibrations, which are very high and come out as noise.

Strong magnets cause strong vibrations. Because of the strong magnets, which are used in this equipment, causes high field strength.

Due to this high field strength and strong vibrations, we hear noise.

What is MRI gating?

To minimize cardiorespiratory artefact’s, MR data collection is coordinated with the cardiac cycles and this process is known as gating.

Gating is a prospective gating process where MR data collection occurs only after a desirable physiological event has been observed. MR data are continuously acquired in retrospective gating. The respiratory level is registered at the same time as the data for MR. Instead, the MR data may be reordered, clustered or compared with the cardiorespiratory process step.

It is Imaging synchronisation with a heart or respiratory cycle process.A variety of means can be used to detect these cycles, such as the ECG, peripheral pulse, chest movement, etc. This can be either prospective or retrospective.