Would a psychologist be able to differentiate between a patient with a delusional belief that they have a neural implant and a patient that has legitimately had one installed?

Since neural implant technology is becoming more advanced to the point where technology companies like Neuralink and Synchron able to send information to a patient via these devices, would a psychologist know the difference between someone with a delusion and an actual case? How would a psychologist separate a patient with a delusional belief they have a neural implant and a patient who has legitimately had one installed without their consent?

Edit: To clarify, I mean a neural implant that is not detectable via an MRI, X-Ray, or CAT scan. There are neural implants that are virtually undetectable through these scans.