Once upon a time...in a hospital far far away
Components of MRI
All these components will work together to sample our patient. To make all of this work, we need to be able to measure something from our patient. We need to find an element that is abundant in the patient and demonstrates unique behavior that can be detected.
Hydrogen and MRI
Hydrogen is a very important component for H1-based MRI. There are other target elements that we can utilize when performing MR Spectroscopy.
Static Magnetic Field
The static magnetic field is required to organize and set a precessional frequency. It has the potential to cause many dangerous MR-related adverse events. As thus; we, as MR Imaging personnel, need to be on constant alert, when in the MRI room (Zone 4) and while allowing others into the aforementioned room.
Time-Varying Gradient Coil
From a safety perspective; the gradient coils do cause/raise issues, but are required to spatially localize our patient
Time-Varying RF Field
The RF transmitter will create resonance in our patient. This will cause an increase in the energy state of hydrogen. We can now create a measurable magnetic behavior. However; we need some means to measure this.
The RF coils come in all shapes and sizes. They are essential in collecting signal from our patient.