Is There A Neurosurgeon Or Neurologist That Can Answer My

Is there a neurosurgeon or neurologist that can answer my questions? I had a vp shunt, (Medtronic with programmable Strata valve) implanted in my head in November 2104 for hydrocephalus. Is is safe to go thru and airport metal detector? And a cruise ship metal detector? I am dong both next week. Should I get a doctor's note to allow me to bypass the metal detectors? Are hand held wands better or worse? Thank you.