Motion artifact on MRI

MRI may be a very good diagnostic tool, but is subjected to limitations as well. One of the most common problem encountered is movement. Patient in pain often cannot hold still for long period of time, which is unfortunately required during MRI scans. A typical scan with MRI is at least 20 minutes, which to some, is already too long to bear. Image above shows curve signal in the shoulder MRI picture (coronal oblique STIR) due to motion artifact.

Repeated image after advising the patient to hold still saw elimination of such artifact.

Clinicians should provide adequate analgesia to patients prior to MRI scan. Some patients in severe discomfort may benefit from sedation administered prior to the scan.