First off I am against any X Rays  if they are not really proven necessary.  I feel there is to many folks now being subjected to radiation for no reason.  Just wished i knew back then what I  know now as every X Ray that I have had through out my life would have never been done on me. I would have said  no back then as I do today.  Take a look at this  article.  My Opinion Only

The use of MRIs, X-rays or CT scans provides no benefit in diagnosing patients with routine back pain, according to a new study conducted by researchers from the Oregon Health and Science University and published in the journal Lancet.