 - Existing contraindications to the performance of MRI procedure, including presence of metallic prostheses not compatible with the MRI procedure other than those approved as safe for use in MRI scanners e.g., some types of aneurysm clips, shrapnel in proximity to vital organs such as the retina, pacemaker, intractable claustrophobia and incapability to follow the instruction for the correct performance of the MRI e.g. to maintain a supine position, to hold breath, etc. 