No prob. Patients are asked about metal for two reasons. 1- to make sure they don't have any in them that can cause injury- shrapnel in the brain/spinal canal, metal in the eyes for example, or surgically implanted stuff that will do the same- anuerysm clips or ferrous clips that haven't been in place long enough to be set in place by scar tissue. The other is to find out ahead of time if the patient has a safe metal implant that might interfere with the diagnostic quality of the exam. Someone with a knee replacement can have an MRI safely, but imaging the area where the replacement is would be useless since the area would look too distorted to provide useful info.