Object ID: 00000018WIA30C18870GYZ
Topic ID: id_40024131 Version: 1.3
Date: Aug 11, 2022 3:22:27 PM

RF Inhomogeneity artifact

Failure of an RF coil can cause intensity variation across an image. This often indicates the failure of a coil element or the presence of ferromagnetic material in the imaged object.

Figure 1. Axial shoulder image displaying a drop in signal intensity caused by a ferromagnetic object on the patient.

Figure 2. Note the loss of signal intensity in the lower right corner of the axial abdominal image due to a failure in a coil element.

Check with the patient to make sure that nothing on them or in them is causing the artifact. If you suspect a faulty coil element, check each element using manual prescan. If you isolate a faulty element discontinue using the coil and consult with your service engineer.