Magnetic Resonance Imaging at 1.5 and 3.0 Tesla

Background: MRI is a constantly evolving imaging modality. Pulse sequences are often modified to improve their performance. However, many of these changes have not yet been approved by the FDA and therefore, are not considered standard of care. Some of these sequences require the use of new types of imaging coils, which are also investigational. Objectives: The major purpose of this protocol is to inform patients undergoing MR scans in the Clinical Center that they be scanned with MRI sequences and/or coils which may or may not be FDA approved and to get the patient s consent for this. This is not a formal research study since specific disease entities and specific pulse sequences are not studied in a systematic way. Rather, the purpose is to give NIH patients access to gradual improvements in MR technology that would otherwise not be available to them. Eligibility: All patients who, by virtue of the NIH protocol in which they are enrolled, qualify for MRI will be eligible for participation in this protocol. Design: Up to 99,999 participants will be enrolled in this study.