What unit is RF measured in?

The correct unit for measuring radiofrequency (RF) fields in the context of magnetic resonance imaging (MRI) is indeed the microTesla. RF fields are essential in MRI because they excite hydrogen nuclei in the body, producing signals that create images. In this domain, microTesla is often used because it reflects the relatively weak magnetic fields produced by RF coils in the MRI setup.

Values in the microTesla range provide a more convenient and relevant scale for the RF fields encountered during MRI processes, as compared to the much larger units like milliTesla or Gauss, which are commonly used for measuring DC fields or static magnetic fields. This specificity in stating RF fields helps in ensuring that the safety thresholds for exposure are clearly understood and adhered to in clinical practice.

While milliTesla is a valid unit for measuring magnetic fields, it is generally too large for the RF frequencies typically encountered in MRI. Centitesla is not commonly used or recognized as a standard unit, which makes it less relevant in the context of MRI safety and operations. Gauss, while also a legitimate unit for measuring magnetic fields, is not the conventional choice for RF; instead, Tesla and its subdivisions (like microTesla) are widely accepted in the field.

In summary, microTesla is the