The New Combined PET-MR System NextGen PET-MR With Syngo MR XA80A: Evaluation of Diagnostic Image Quality and Usability (Software and Hardware) in the Clinical Setting.

Inclusion Criteria: * Adult test subjects for whom a PET-MR examination is indicated and will be performed, or * Test subjects for whom a PET-CT examination is indicated and will be performed * Test subjects of legal age who have given their written informed consent to participate in the clinical investigation * Written consent of the test subject to be informed in the event of suspected clinically relevant incidental findings * Written consent to the disclosure of a clinically relevant incidental finding to a subsequent physician (release from the duty of confidentiality) * The test subject´s written consent that the recorded image data may be made available to Siemens Healthcare A/S in pseudonymized form * Test subjects whose weight does not exceed the permissible weight limit of the patient table (200 kg). Exclusion Criteria: * Metal in and on the body that causes stress to the test subject during an examination in the FoV of the combined PET-MR system * All pacemakers and other implants * Pregnancy: The exclusion of test subjects of childbearing potential is carried out based on a positive pregnancy test * Test subjects who indicate an increased sensitivity to loud noises * Test subjects who are incapable of giving consent.