Attendee Question from 9th International Novalis Circle Congress.
Section: Physics Elements - Benefits of MRI Distortion Corrections in GK and Linac SRS
Speaker: Cory Knill
General MRI question - any scenarios where MRI would need to be repeated? such as too much patient motion? etc.
Thank you for this interesting question. At our institution, we assess each case individually rather than following a strict protocol. We repeat the MRI when artifacts or patient motion cause blurring in the MR sequence, compromising physician contouring. In other situations, we typically address the issue with MRI distortion correction. For small lesions or minor discrepancies, we generally prefer adding a 1 mm margin for malignant lesions rather than repeating the MRI.