Is there a reason that an MRi can not be done because of new hardware?

Yes, new hardware, such as implanted medical devices (e.g., pacemakers, cochlear implants, or certain metal implants), can pose safety risks during an MRI. These devices may be incompatible with the strong magnetic fields and radiofrequency waves used in MRI scans, potentially leading to malfunction or injury. Additionally, some new hardware may not have been tested for MRI compatibility, requiring caution and thorough assessment before proceeding with the scan.